← Back to Directory
Bihar Electricity Grid Code, 2010
Bihar Electricity Grid Code, 2010
Sections
1. Introduction.
Section 12. All Users that connect with and/or utilize the State Grid are required to abide by the principles and procedures as laid down in the Grid Code in so far as they apply to that User.
Section 23. The Grid Code shall be enforced by STU. Users must provide STU reasonable rights of access, service and facilities necessary to discharge its responsibilities in the users premises and to comply with instructions as issued by STU to implement and enforce the Grid code.
Section 32. SLDC shall bring the non-compliance to the notice of BERC.
Section 23. Consistent failure to comply with the Grid Code provisions may lead to disconnection of the User's plant and /or facilities.
Section 32. STU shall not be held responsible for any consequences that arise from its reasonable and prudent actions on the basis of such information.
Section 22. STU shall not, other than as required by the Grid Code, disclose such information to any person other than Central or State Government and BERC without the prior written consent of the provider of the information.
Section 22. In the event of any conflict between any provision of the Grid Code and any contract or agreement between STU and Users, the provision(s) of the Grid Code will prevail.
Section 22. Glossary and Definition.
Section 23. Management of Grid Code.
Section 31. The State Transmission Utility (STU) is required to implement and comply with the Bihar Electricity Grid Code and to carry out periodic review and amendments of the same with the approval of Bihar Electricity Regulatory Commission (BERC). A Review Panel shall be constituted by STU, as required in this Section, comprising of the representatives of the Users of the Transmission System.
Section 12. No change in this Grid Code, however small or large, shall be made without being deliberated and agreed by the Grid Code Review Panel and thereafter approved by BERC. However, in an unusual situation where normal day to day operation is not possible without revision of some clauses of Grid Code, a provisional revision may be implemented before approval of BERC is received, but only after discussion at a special Review Panel Meeting convened on emergency basis. BERC should promptly be intimate
Section 2
CHAPTER 2
CHAPTER 2
Section 134. System Planning.
Section 41. This Section specifies the methods for data submission by Users to STU for planning and development of the State Transmission System. This Section also specifies the procedures to be adopted by STU in the planning and development of the State Transmission System.
Section 12. Requirement for reinforcement or extension of the State Transmission system arise due to many reasons of which a few are mentioned below:
Section 25. Connection Conditions.
Section 51. The User shall meet all necessary conditions as specified in the State Grid Code and submit the application to STU containing all the information as may be specified.
Section 12. STU shall make a formal offer within 60 days of the receipt of the application. The offer shall specify and take into account any work required for the extension or reinforcement of the State Transmission System necessitated by the applicant's proposal and for obtaining any consent necessary for the purpose. STU shall process the application in accordance with the CEA Regulations on Grid Connectivity
Section 23. If the specified time limit for making the offer against any application is not adequate, STU shall make a preliminary offer within the specified time indicating the extent of further time required for detailed analysis.
Section 34. Any offer made by STU shall remain valid for a period of 60 days and unless accepted before the expiry of such period, shall lapse thereafter.
Section 45. In the event of offer becoming invalid or not accepted by the applicant, STU shall not be bound to consider any further application from the same applicant within 12 months unless the new application is substantially different from the original application.
Section 56. The applicant shall furnish the Detailed Planning Data as per Appendix-B.
Section 6
CHAPTER 3
CHAPTER 3
Section 246. Operation Planning.
Section 67. Outage Planning.
Section 78. Contingency Planning.
Section 89. Cross Boundary Safety.
Section 910. Operational Event/Accident Reporting.
Section 10
CHAPTER 4
CHAPTER 4
Section 3011. Scheduling and Despatch.
Section 111. SLDC will issue despatch instructions required to regulate all generation and imports from IPPs / CPPs according to the 15-minute day ahead generation schedule. In the absence of any despatch instruction by SLDC, SGS shall generate/ export according to the day ahead generation schedule.
Section 12. The SLDC shall regulate the overall State generation in such a manner that generation from following types of power stations shall not be curtailed except under abnormal operating conditions.
Section 23. Despatch instructions to SGS shall be in standard format to be finalized by SLDC.
Section 34. The algebraic sum of scheduled drawals from ISGS, long term open access, and short term open access arrangements shall be the net drawal schedule for the control area of the utility.
Section 412. Frequency and Voltage Management.
Section 1213. Monitoring of Generation and Drawal.
Section 13
CHAPTER 5
CHAPTER 5
Section 3814. Protection.
Section 14
CHAPTER 6
CHAPTER 6
Section 4015. Metering Code.
Section 15
CHAPTER 7
CHAPTER 7
Section 4216. Data Registration.
Section 161. Rated MVA.
Section 12. Voltage Ratio.
Section 23. Vector Group.
Section 34. Positive sequence reactance for maximum, minimum, normal Tap. (% on MVA).
Section 45. Positive sequence resistance for maximum, minimum, normal Tap. (% on MVA).
Section 56. Zero sequence reactance (% on MVA).
Section 67. Tap changer Range (+% to -%) and steps.
Section 78. Type of Tap changer, (off/on load).
Section 81. Rated voltage (kV).
Section 12. Type of circuit breaker (MOCB/ABCB/SF6).
Section 23. Rated short circuit breaking current (kA) 3 phase.
Section 34. Rated short circuit breaking current (kA) 1 phase.
Section 45. Rated short circuit making current (kA) 3 phase.
Section 56. Rated short circuit making current (kA) 1 -phase.
Section 67. Provisions of auto reclosing with details.
Section 71. Busbar.
Section 12. Switchgear.
Section 23. Transformer bushings.
Section 34. Transformer windings.
Section 41. Hot
Section 12. Warm
Section 23. Cold
Section 31. Hot
Section 12. Warm
Section 23. Cold
Section 31. Land
Section 12. Coal
Section 23. Water
Section 34. Environmental clearance
Section 45. Rehabilitation of displaced persons
Section 51. Multipurpose
Section 12. For Power
Section 21. Area capacity curves and
Section 12. Unit capability at different net heads
Section 21. Rated MVA
Section 12. Voltage Ratio
Section 23. Vector Group
Section 34. Positive sequence reactance for maximum, minimum and normal Tap.(% on MVA).
Section 45. Positive sequence resistance for maximum, minimum and normal Tap.(% on MVA).
Section 56. Zero sequence reactance (% on MVA)
Section 67. Tap changer range (+% to -%) and steps.
Section 78. Type of Tap changer (off/on load).
Section 89. Neutral grounding details.
Section 91. Rated voltage (KV).
Section 12. Type of Breaker (MOCB/ABCB/SF6).
Section 23. Rated short circuit breaking current (KA) 3 phase.
Section 34. Rated short circuit breaking current (KA) 1 phase.
Section 45. Rated short circuit making current (KA) 3 phase.
Section 56. Rated short circuit making current (KA) 1 phase.
Section 67. Provisions of auto re-closing with details.
Section 71. Bus bar.
Section 12. Switchgear.
Section 23. Transformer Bushings
Section 34. Transformer windings.
Section 41. Rated terminal voltage (KV).
Section 12. Rated MVA.
Section 23. Rated MW
Section 34. Speed (rpm) or number of poles.
Section 45. Inertia constant H (MW sec./MVA).
Section 56. Short circuit ratio.
Section 67. Direct axis synchronous reactance Xd (% on MVA).
Section 78. Direct axis (saturated) transient reactance (% on MVA) X'd.
Section 89. Direct axis (saturated) sub-transient reactance (% on MVA) X"d.
Section 910. Quadrature axis synchronous reactance (% on MVA) Xq.
Section 1011. Quadrature axis (saturated) transient reactance (% on MVA) X'q.
Section 1112. Quadrature axis (saturated) sub-transient reactance (% on MVA) X"q.
Section 1213. Direct axis transient open circuit time constant (sec) T'do.
Section 1314. Direct axis sub-transient open circuit time constant (sec) T"do.
Section 1415. Quadrature axis transient open circuit time content (sec) T'qo.
Section 1516. Quadrature axis transient open circuit time constant (sec) T"qo.
Section 1617. Stator Resistance (Ohm) Ra.
Section 1718. Stator leakage reactance (Ohm) X1.
Section 1819. Stator time constant (Sec).
Section 1920. Rated Field current (A).
Section 2021. Neutral grounding details.
Section 2122. Open Circuit saturation characteristics of the Generator for various terminal voltages giving the compounding current to achieve this.
Section 2223. Type of Turbine.
Section 2324. Operating Head (Metres)
Section 2425. Discharge with full gate opening (cumecs)
Section 2526. Speed Rise on total Load throw off(%).
Section 2627. MW and MVAr Capability curve
Section 271. Minimum notice required to Synchronise a Generating Unit from desynchronisation.
Section 12. Minimum time between Synchronising different Generating Units in a Power Station.
Section 23. Minimum block load requirements on Synchronising.
Section 31. Topographical survey
Section 12. Geological survey
Section 23. Land
Section 34. Environmental Clearance
Section 45. Rehabilitation of displaced persons.
Section 51. Short Circuit studies
Section 12. Stability Studies.
Section 23. Load Flow Studies.
Section 31. Voltage
Section 12. No. of circuits
Section 23. Point of Connection.
Section 31. Name of Sub-station.
Section 12. Power Station connected.
Section 23. Number and length of circuits.
Section 34. Interconnecting transformers.
Section 45. Sub-station bus layouts.
Section 56. Power transformers.
Section 67. Reactive compensation equipment.
Section 71. Bus bar layouts.
Section 12. Electrical circuitry, lines, cables, transformers, switchgear etc.
Section 23. Phasing arrangements.
Section 34. Earthing arrangements.
Section 45. Switching facilities and interlocking arrangements.
Section 56. Operating voltages.
Section 67. Numbering and nomenclature:
Section 78. Transformers.
Section 89. Circuits.
Section 910. Circuit breakers.
Section 1011. Isolating switches.
Section 111. Length of line (km).
Section 12. Number of circuits.Per Circuit values.
Section 23. Operating voltage (KV).
Section 34. Positive Phase sequence reactance (pu on 100 MVA) X1
Section 45. Positive Phase sequence resistance (pu on 100 MVA) R1
Section 56. Positive Phase sequence susceptance (pu on 100 MVA) B1
Section 67. Zero Phase sequence reactance (pu on 100 MVA) X0
Section 78. Zero Phase sequence resistance (pu on 100 MVA) R0
Section 89. Zero Phase sequence susceptance (pu on 100 MVA) B0
Section 9
bihar-electricity-grid-code-2010.json
•
165 Sections
•
Bihar
{
"id": 15265,
"slug": "bihar-electricity-grid-code-2010",
"title": "Bihar Electricity Grid Code, 2010",
"short_title": "Bihar Electricity Grid Code, 2010",
"act_number": "Published vide Notification No. BERC/Regl-1/2009 0",
"act_year": 2010,
"act_type": "STATE",
"location": "Bihar",
"law_status": "unknown",
"enactment_date": null,
"description": "Bihar Electricity Grid Code, 2010",
"preamble": "",
"section_label": "Section",
"sections": [
{
"number": "1",
"title": "1. Introduction.",
"chapter": null,
"content": "(a) to undertake transmission of energy through the Intra-State Transmission System\n(b) to discharge all functions of planning and coordination relating to Intra-State Transmission System with\n(i) Central Transmission Utility;\n(ii) State Governments;\n(iii) Generating Companies;\n(iv) Regional Power Committee;\n(v) Authority;\n(vi) Licensees;\n(vii) Any other person notified by the State Government in this behalf\n(c) to ensure development of an efficient, coordinated and economical system of intra-state transmission lines for smooth flow of electricity from a generating station to load centres;\n(d) to provide non-discriminatory open access to its transmission system for use by -\n(i) any licensee or generating company on payment of the transmission charges;\n(ii) any consumer as and when such open access is provided by the State Commission under sub-section (2) of Section 42, on payment of the transmission charges and a surcharge thereon, as may be specified by the State Commission.\nState Load Despatch Centre (SLDC)\nState Load Despatch Centre\n(a) be responsible for optimum scheduling and despatch of electricity within a State, in accordance with the contracts entered into with the licensees or the generating companies operating in that State;\n(b) monitor the grid operations;\n(c) keep accounts for the quantity of electricity transmitted through the State Grid;\n(d) exercise supervision and control over the Intra State Transmission system;\n(e) be responsible for carrying out real time operations for grid control and despatch of electricity within the State through secure and economic operation of the State Grid in accordance with the Grid Standards and the State Grid Code.\n1.2. Objective.\n1.3. Structure of the Grid Code.\nI. General Code. - General Code includes Sections on:\nGeneral Code.\n(a) Management intended to ensure that all other Sections of the Grid Code work together in the management of the Grid Code\n(b) Review Principles: specify a procedure for review of Grid Code to cater to inadvertent omissions and any modifications needed from time to time.\nII. Planning Code. - Planning Code includes Sections on:\nPlanning Code.\n(a) System Planning: specifies the procedures to be applied by STU in the planning and development of the State Transmission System and by other Users connected or seeking Connection to the State Transmission System.\n(b) Principles: specify procedures to be followed by STU in the development of the State Transmission System in the long term taking into account the requirements for new connection of generation and demand.\n(c) Connection conditions: specifies the technical requirements and standards to be complied with by STU and other Users connected or seeking connection to the State Transmission System.\nIII. System Operation Code. - System Operation Code includes Sections on:\nSystem Operation Code.\n(a) System Operation: Specifies the conditions under which STU shall operate the State Transmission System, the Generating Companies shall operate their Power Stations and the Distribution Licensees shall operate their Distribution Systems in so far as necessary to ensure the security and quality of supply and safe operation of the State Transmission System under both normal and abnormal operating conditions.\n(b) Outage Planning: Specifies the procedures relating to the coordination of outages for scheduled maintenance of the State Transmission System, Generating Units, embedded within the State system and not classified as regional utilities, Captive Power Plant (CPP) and Distribution System that will use the State Transmission System.\nIV. Schedule and Despatch Code. - Schedule and Despatch. - Specifies the procedures relating to the scheduling and despatch of Generating Units and drawal by Distribution Licensees / Open Access Customers to meet State demand and drawal allocation.\nSchedule and Despatch Code.\nV. Protection Code. - Protection Code specifies the co-ordination responsibility and minimum standards of protection that are required to be installed by Users of the State Transmission System.\nProtection Code.\nVI. Metering Code. - Metering Code specifies the minimum operational and commercial metering to be provided for each User. It also sets out the requirement and procedures for metering.\nMetering Code.\nVII. Data Registration Code. - This contains the details of all the data required by STU, which is to be provided by the Users and vice versa.\nData Registration Code.\n1.4. Scope of Grid Code.",
"footnote": "",
"is_definition": false,
"sort_order": 0
},
{
"number": "2",
"title": "2. All Users that connect with and/or utilize the State Grid are required to abide by the principles and procedures as laid down in the Grid Code in so far as they apply to that User.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 1
},
{
"number": "3",
"title": "3. The Grid Code shall be enforced by STU. Users must provide STU reasonable rights of access, service and facilities necessary to discharge its responsibilities in the users premises and to comply with instructions as issued by STU to implement and enforce the Grid code.",
"chapter": null,
"content": "1.5. Non-Compliance.",
"footnote": "",
"is_definition": false,
"sort_order": 2
},
{
"number": "2",
"title": "2. SLDC shall bring the non-compliance to the notice of BERC.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 3
},
{
"number": "3",
"title": "3. Consistent failure to comply with the Grid Code provisions may lead to disconnection of the User's plant and /or facilities.",
"chapter": null,
"content": "1.6. Code Responsibilities.",
"footnote": "",
"is_definition": false,
"sort_order": 4
},
{
"number": "2",
"title": "2. STU shall not be held responsible for any consequences that arise from its reasonable and prudent actions on the basis of such information.",
"chapter": null,
"content": "1.7. Confidentiality.",
"footnote": "",
"is_definition": false,
"sort_order": 5
},
{
"number": "2",
"title": "2. STU shall not, other than as required by the Grid Code, disclose such information to any person other than Central or State Government and BERC without the prior written consent of the provider of the information.",
"chapter": null,
"content": "1.8. Dispute Settlement Procedures.",
"footnote": "",
"is_definition": false,
"sort_order": 6
},
{
"number": "2",
"title": "2. In the event of any conflict between any provision of the Grid Code and any contract or agreement between STU and Users, the provision(s) of the Grid Code will prevail.",
"chapter": null,
"content": "1.9. Directive.\n1.10. Compatibility with Indian Electricity Grid Code.\n1.11. The Board functioning as integrated Utility.\n1.12. Exemptions.",
"footnote": "",
"is_definition": false,
"sort_order": 7
},
{
"number": "2",
"title": "2. Glossary and Definition.",
"chapter": null,
"content": "ABT\nAvailability Based Tariff\nAct\nThe Electricity Act, 2003 (Act No. 36 of 2003)\nActive Energy\nThe electrical energy produced, flowing or supplied by an\n\t\t\t\telectric circuit during a time interval, being the integral with\n\t\t\t\trespect to time of the instantaneous power, measured in units of\n\t\t\t\twatt-hours or standard multiples thereof,\nActive Power\nThe product of voltage and the in phase component of alternating\n\t\t\t\tcurrent measured in units of watts and standard multiples\n\t\t\t\tthereof,\nApparatus\nAll the electrical apparatus like machines, fittings, accessories\n\t\t\t\tand appliances in which electrical conductors are used.\nApparent Power\nThe product of voltage and alternating current measured in unit\n\t\t\t\tof volt-amperes and standard multiples thereof,\nArea of Supply\nArea within which a Distribution Licensee is authorized by his\n\t\t\t\tlicence to supply electricity.\nAutomatic Voltage\n\t\t\t\tRegulatory (AVR)\nA continuously acting automatic excitation system to control a\n\t\t\t\tGenerating Unit terminal voltage.\nAuthority\nCentral Electricity Authority (CEA)\nAuxiliaries\nAll the plant and machinery required for the generating unit's\n\t\t\t\tfunctional operation that do not form part of the generating\n\t\t\t\tunit.\nAvailability\n\"Fully Available\" shall mean that the Generating Unit\n\t\t\t\tis available to its contracted capacity. In respect of the\n\t\t\t\tTransmission System, \"Availability \" shall mean the\n\t\t\t\ttime in hours the Transmission System is capable of transmitting\n\t\t\t\telectricity at its rated voltage from the supply point to the\n\t\t\t\tdelivery point and expressed as a percentage of Annual\n\t\t\t\tAvailability.\nBulk Power Transmission\nAgreements made between the STU and its H.T customers and between\n\t\t\t\tthe Board and CTU.\nAgreement Backing Down\nReduction of generation on instructions from SLDC / ERLDC by a\n\t\t\t\tgenerating unit under abnormal conditions.\nBlack start procedure\nThe procedure necessary to recover from partial or total\n\t\t\t\tblackout.\nBlack start capability\nAn ability in respect of a Black Start Station, for at least one\n\t\t\t\tof its generating units or CCGT units to start up from shut down\n\t\t\t\tand to energize a part of the system and be synchronized to the\n\t\t\t\tsystem upon instruction from the State Load Dispatch Centre,\n\t\t\t\twithin two hours, without any external supply.\nBlack start stations\nGenerating stations having Black Start Capability.\nCaptive Power Plant\n\t\t\t\t(CPP)\nA Power Plant set up by any person to generate electricity\n\t\t\t\tprimarily for his own use and includes a power plant set up by\n\t\t\t\tany co-operative society or association of persons for generating\n\t\t\t\telectricity primarily for use of members of such co-operative\n\t\t\t\tsociety or association.\nCEA\nCentral Electricity Authority\nCentral Transmission\n\t\t\t\tUtility (CTU)\nAny Government Company which the Central Government may notify\n\t\t\t\tunder sub Section (1) of Section 38 of the Electricity Act, 2003.\nCERC Central\nElectricity Regulatory Commission.\nConnection\nThe electric power lines and electrical equipment used to effect\n\t\t\t\ta connection of a user's system to the Transmission System.\nConnection conditions\nThose conditions mentioned in Section 5 (\"connection\n\t\t\t\tconditions\") which have to be fulfilled before the User's\n\t\t\t\tSystem is connected to the State Grid\nConnection point\nAn electrical point of connection between the Transmission System\n\t\t\t\tand the User's System.\nConsumer\nAny person who is supplied with electricity for his own use by a\n\t\t\t\tlicensee or the Government or by any other person engaged in the\n\t\t\t\tbusiness of supplying electricity to public under the Electricity\n\t\t\t\tAct, 2003 or any other law for the time being in force and\n\t\t\t\tincludes any person whose premises are for the time being\n\t\t\t\tconnected for the purpose of receiving electricity with the works\n\t\t\t\tof a licensee, the Government or such other person, as case may\n\t\t\t\tbe and shall include a person whose electricity supply has been\n\t\t\t\tdisconnected.\nDemand\nThe demand of Active Power in MW and Reactive Power in MVAR of\n\t\t\t\telectricity unless otherwise stated.\nDemand control\nAny of the following methods of achieving a load reduction:\n(a) Consumer Load Management initiated by Users.\n(b) Consumer Load reduction by Disconnection initiated by Users\n\t\t\t\t(other than following an instruction from Load Despatch Centre).\n(c) Consumer Load reduction instructed by the Load Despatch\n\t\t\t\tCentre\n(d) Automatic under Frequency Load Disconnection\n(e) Emergency manual Load Disconnection\nDespatch\nOperation control of an integrated electricity system involving\n\t\t\t\toperations such as:\n(a) Assignment of levels of output to specific Generating Plant\n\t\t\t\tor Load control devices to effect the most reliable and\n\t\t\t\teconomical supply as the load vary.\n(b) The control of the operation of Extra High Voltage lines,\n\t\t\t\tassociated sub stations and equipment.\n(c) The scheduling of various types of transactions with the\n\t\t\t\telectric utilities over the interconnecting Transmission Lines.\nDe-synchronize\nThe act of taking a generating unit off a system to which it has\n\t\t\t\tbeen synchronized.\nDisconnection\nThe physical separation of Users or Consumers from the system.\nDiscrimination\nThe quality where a relay or protective system is enabled to pick\n\t\t\t\tout and cause to be disconnected only the faulty apparatus.\nDistribution Licensees\nA licensee authorized under Section 14 of the Act to operate and\n\t\t\t\tmaintain a distribution system for supplying electricity to the\n\t\t\t\tconsumers in his area of supply.\nDistribution system\nThe system of wires and associated facilities between the\n\t\t\t\tdelivery points on the transmission lines or the generating\n\t\t\t\tstation connection and the point of connection to the\n\t\t\t\tinstallation of the consumers.\nDrawal\nThe import / export of electrical energy from / to the grid\nEarthing\nConnecting the conducting parts of an equipment or machinery with\n\t\t\t\tthe general mass of earth, in such a manner ensuring at all times\n\t\t\t\tan immediate discharge of energy without danger, by maintaining\n\t\t\t\tthe same efficiently at earth's potential.\nEarthing device\nA means of providing connection between a conductor and earth\n\t\t\t\tbeing of adequate strength and capability.\nEHV\nExtra High Voltage equal to and greater than 66 kV\nFrequency\nThe number of alternating current cycles per second (expressed in\n\t\t\t\tHertz) at which the system is operating.\nGenerating company\nAny company or body corporate or association or body of\n\t\t\t\tindividuals, whether incorporated or not, or artificial juridical\n\t\t\t\tperson, which owns or operates or maintains a generating station.\nGenerating station\nAny station for generating electricity, including any building\n\t\t\t\tand plant with step-up transformer, switch-yard, switch gear,\n\t\t\t\tcables or other appurtenant equipment, if any used for that\n\t\t\t\tpurpose and the site thereof, a site intended to be used for a\n\t\t\t\tgenerating station, and any building used for housing the\n\t\t\t\toperating staff of a generating station and where electricity is\n\t\t\t\tgenerated by water - power, includes, penstocks, head and tail\n\t\t\t\tworks, main and regulatory reservoirs, dams and other hydraulic\n\t\t\t\tworks, but does not in any case include any sub station.\nGenerating unit\nThe combination of an electric power generator and its prime\n\t\t\t\tmover and all of its associated equipment, which together\n\t\t\t\tconstitutes a single generating machine.\nGenerating schedule\nThe despatch schedule of a generating station\nBERC\nBihar Electricity Regulatory Commission\nGrid\nHigh Voltage backbone system of inter-connected Transmission\n\t\t\t\tLines, Sub Stations and Generating Stations.\nGrid Code\n\" Bihar Electricity Grid Code\", a document describing\n\t\t\t\tthe procedures and the responsibilities for planning and\n\t\t\t\toperation of Bihar Grid.\nGrid Code Review Panel\n\t\t\t\tor 'Panel'\nThe Panel with the functions set out in the Grid Code*\nHigh Voltage or HV IEGC\nVoltage greater than 440 V and lower than 33 kV. Indian\n\t\t\t\tElectricity Grid Code, a document describing the philosophy and\n\t\t\t\tthe responsibilities for planning and operation of Indian Power\n\t\t\t\tSystem specified by the Central Electricity Regulatory Commission\n\t\t\t\t(CERC) in accordance with sub-section 1 (h) of Section 79 of the\n\t\t\t\tAct.\nIndian Standards (\"IS\")\nThose Standards and specifications approved by the Bureau of\n\t\t\t\tIndian Standards.\nInter-State Transmission System (ISTS)\nInter-State Transmission System includes :\n(a) Any system for the conveyance of electricity by means of a\n\t\t\t\tmain Transmission Line from the territory of one State to another\n\t\t\t\tState;\n(b) the conveyance of electricity across the territory of an\n\t\t\t\tintervening State as well as conveyance within a State, which is\n\t\t\t\tincidental to such Inter-State transmission of electricity.\n(c) The transmission of electricity within the territory of a\n\t\t\t\tState built, owned, operated maintained or controlled by the\n\t\t\t\tCentral Transmission Utility.\nInterconnecting\n\t\t\t\tTransformer (ICT)\nTransformer connecting EHV lines of different voltage systems.\nIndependent Power\n\t\t\t\tProducer (IPP)\nPower Station within the State owned by a generator who is not\n\t\t\t\tpart of BSEB.\nInter tripping\n(a) The tripping of circuit - breaker(s) by commands initiated\n\t\t\t\tfrom protection at a remote location independent of the state of\n\t\t\t\tlocal protection; or\n(b) Operational intertripping.\nIntra-State Transmission\n\t\t\t\tSystem\nAny system for transmission of electricity other than an Inter -\n\t\t\t\tState Transmission System.\nIsolation\nThe disconnection of EHV / HV Apparatus from the remainder of the\n\t\t\t\tSystem in which that EHV / HV Apparatus is situated.\nLean Period\nThat period in a day for a few hours when the electrical power\n\t\t\t\tdemand remains less than the average demand.\nLicence\nAny licence granted by BERC under provisions of the relevant laws\n\t\t\t\tin force\nLoad\nThe Active, Reactive or Apparent power as the context requires,\n\t\t\t\tgenerated, transmitted or distributed.\nLoad Factor\nLoad Factor is the ratio of the average power to the maximum\n\t\t\t\tdemand. The load factor depends on the interval of time of the\n\t\t\t\tmaximum demand and the period over which the average is taken.\nLoad Factor = Units consumed in a given period Maximum demand X No. of hours in the period\nLow Voltage or LV\nVoltage not exceeding 440 volts\nMain protection\nProtection equipment or system expected to have priority in\n\t\t\t\tinitiating either a fault clearance or an action to terminate an\n\t\t\t\tabnormal condition in a power system.\nNTPC\nNational Thermal Power Corporation Limited\nOperating Margin\nAggregate available capacity of generating station in the system\n\t\t\t\ton real time basis, which is over and above the operating level\n\t\t\t\tto the maximum capacity of the generating units limited by\n\t\t\t\ttechnical parameters for short duration.\nOperation\nA scheduled or planned action relating to the operation of a\n\t\t\t\tsystem.\nOperational procedure\nManagement instructions and procedures, both for the safety Rules\n\t\t\t\tand for the local and remote operation of plant and apparatus,\n\t\t\t\tissued in connection with the actual operation of plant and/or\n\t\t\t\tapparatus at or from a connecting site.\nOpen Access\nThe non-discriminatory provision for the use of transmission\n\t\t\t\tlines or distribution system or associated facilities with such\n\t\t\t\tlines or system by any licensee or consumer or a person engaged\n\t\t\t\tin generation in accordance with the regulations specified by the\n\t\t\t\tCommission.\nOutage\nA total or partial regulation in availability due to repair and\n\t\t\t\tmaintenance of the Transmission or Distribution or Generation\n\t\t\t\tfacility or defect in Auxiliary System.\nPart Load\nThe condition of a generating station which is loaded but is not\n\t\t\t\trunning at its declared availability.\nPartial shutdown\nA shutdown of a part of the system resulting in failure of power\n\t\t\t\tsupply, either from external connections or from the healthy part\n\t\t\t\tof the system.\nPeak period\nThat period in a day when the electrical power demand is highest.\nPerson\nAny company or body corporate or association or body of\n\t\t\t\tindividuals, whether incorporated or not, or artificial juridical\n\t\t\t\tperson.\nPGCIL\nPower Grid Corporation of India Limited\nPlanned outage\nAn outage of generating plant or part of the Transmission system,\n\t\t\t\tor part of a User's System coordinated by SLDC.\nPower factor\nThe ratio of Active Power (kW) to Apparent Power (KVA).\nProtection\nThe scheme and Apparatus for detecting abnormal conditions on a\n\t\t\t\tsystem and initiating fault clearance or actuating signals or\n\t\t\t\tindications.\nRated MW\nThe \"rating plate\" MW output of a Generating Unit,\n\t\t\t\tbeing that output up to which the generating unit is designed to\n\t\t\t\toperate.\nReactive Power\nThe product of voltage and current and the sine of the phase\n\t\t\t\tangle between them measured in units of volt-amperes reactive and\n\t\t\t\tstandard multiples thereof;\nRegulating Margin\nThe system voltage and frequency beyond which the system should\n\t\t\t\tnot be operated.\nRe-Synchronization\nThe bringing of parts of the system which has gone out of\n\t\t\t\tsynchronism with each other, back into synchronism.\nSafety-Rules\nThe Rules framed by the Users and the transmission licensee to\n\t\t\t\tensure safety to persons working on plant /apparatus.\nSLDC\nState Load Despatch Centre\nStanding Instructions\nAn instruction issued by SLDC to a generating company whereby, in\n\t\t\t\tspecified circumstances, the generating company should take\n\t\t\t\tspecified action, as though a valid dispatch instruction has been\n\t\t\t\tissued by SLDC.\nStart-Up\nThe action of bringing a generating unit from shutdown to\n\t\t\t\tsynchronous speed.\nState Transmission\n\t\t\t\tUtility (STU)\nThe utility notified by the Government under subjection (1) of\n\t\t\t\tSection 39 of the Electricity Act, 2003 and whose functions have\n\t\t\t\tbeen outlined under subsection (2) of Section 39 of the\n\t\t\t\tElectricity Act 2003.\nStation Transformer\nA transformer supplying electrical power to the auxiliaries of a\n\t\t\t\tgenerating station, which is not directly connected to a\n\t\t\t\tgenerating unit terminal.\nSub station\nStation for transforming or converting electricity for the\n\t\t\t\ttransmission or distribution thereof and includes transformers,\n\t\t\t\tconverters, switchgears, capacitors, synchronous condensers,\n\t\t\t\tstructures, cable and other appurtenant equipment and any\n\t\t\t\tbuildings used for that purpose and the site thereof.\nSupervisory Control and\n\t\t\t\tData Acquisition or(SCADA)\nThe communication links and data processing systems, which\n\t\t\t\tprovide information to enable implementation of requisite\n\t\t\t\tsupervisory and control actions.\nSynchronized\nThose conditions where an incoming generating unit or system is\n\t\t\t\tconnected to the bus bars of another system so that the\n\t\t\t\tfrequencies and phase relationships of that generating unit or\n\t\t\t\tsystem as the case may be, and the system to which it is\n\t\t\t\tconnected are identical.\nSystem\nAny transmission and distribution system and / or transmission\n\t\t\t\tsystem, as the case may be.\nTotal system\nThe transmission system and all user systems in Bihar.\nTransmission licensee\nA licensee authorized to establish and operate transmission lines\nTransmission lines\nAll high pressure cables and overhead lines (not being an\n\t\t\t\tessential part of the distribution system of a licensee)\n\t\t\t\ttransmitting electricity from a generating station to another\n\t\t\t\tgenerating station or a sub station, together with any step up and\n\t\t\t\tstep-down transformers, switch-gear and other works necessary to\n\t\t\t\tand used for the control of such cables or overhead lines, and\n\t\t\t\tsuch buildings or part thereof as may be required to accommodate\n\t\t\t\tsuch transformers, switchgear and other works.\nTransmission system\nThe system consisting of high pressure cables and overhead lines\n\t\t\t\tof transmission licensee for transmission of electrical power\n\t\t\t\tfrom the generating station upto connection point / interface\n\t\t\t\tpoint with the distribution system. This shall not include any\n\t\t\t\tpart of the distribution system.\nUnder Frequency Relay\nAn electrical measuring relay intended to operate when its\n\t\t\t\tcharacteristic quantity reaches the relay settings by decrease in\n\t\t\t\tfrequency.\nUser\nA term utilized in various Sections of Grid Code to refer to the\n\t\t\t\tpersons using the Bihar Grid, as more particularly identified in\n\t\t\t\teach Section of the Grid Code. In the general conditions the term\n\t\t\t\tmeans any person to whom the Grid Code applies.",
"footnote": "",
"is_definition": true,
"sort_order": 8
},
{
"number": "3",
"title": "3. Management of Grid Code.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 9
},
{
"number": "1",
"title": "1. The State Transmission Utility (STU) is required to implement and comply with the Bihar Electricity Grid Code and to carry out periodic review and amendments of the same with the approval of Bihar Electricity Regulatory Commission (BERC). A Review Panel shall be constituted by STU, as required in this Section, comprising of the representatives of the Users of the Transmission System.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 10
},
{
"number": "2",
"title": "2. No change in this Grid Code, however small or large, shall be made without being deliberated and agreed by the Grid Code Review Panel and thereafter approved by BERC. However, in an unusual situation where normal day to day operation is not possible without revision of some clauses of Grid Code, a provisional revision may be implemented before approval of BERC is received, but only after discussion at a special Review Panel Meeting convened on emergency basis. BERC should promptly be intimate",
"chapter": null,
"content": "3.2. Objective.\n3.3. Grid Code Review Panel.\n(a) One member from SLDC (head of SLDC)\n(b) One Chief Engineer (Generation) of Bihar State Electricity Board.\n(c) One member from Transmission licensee in the State other than STU\n(d) One representative at senior executive level from system operation from National Thermal Power Corporation Limited (NTPC),\n(e) One member at senior level from ERPC Secretariat\n(f) One representative at senior executive level from Eastern Regional Load Despatch Centre (ERLDC)\n(g) One representative at senior executive level from Distribution Licensee.\n(h) One representative at senior executive level from each of the generating companies feeding not less than 50 MW to the Grid in the State.\n(i) One representative from all Captive Power Plants (CPPs), which are in parallel operation with Bihar State Grid, on rotation basis.\n(j) One representative from all the generating companies of small generating stations of less than 50 MW capacity on rotation basis.\n3.4. Functions of the Review Panel.\n(a) Review and Maintenance of the Grid Code and its working.\n(b) Consideration of all requests for review made by any user and make recommendations for changes in the Grid Code together with reasons for such changes.\n(c) Provide guidance on interpretation and implementation of the Grid Code.\n(d) Examination of the problems raised by any user as well as resolution of the problems.\n(e) Ensuring that the changes / modifications proposed in the Grid Code are consistent and compatible with Indian Electricity Grid Code (IEGC). The Review Panel may hold any number of meetings as required subject to the condition that at least one meeting shall be held in every three months. Sub-meetings may be held by STU with the Users to discuss individual requirements and with groups of Users to prepare proposals for Co-ordination Committee's consideration.\n3.5. Review and Revisions.\n(a) Report on the outcome of such review.\n(b) Any proposed revision to the Grid Code.\n(c) All written representations and objections submitted by the Users at the time of review.",
"footnote": "",
"is_definition": false,
"sort_order": 11
},
{
"number": "13",
"title": "CHAPTER 2",
"chapter": "CHAPTER 2",
"content": "Planning Code",
"footnote": "",
"is_definition": false,
"sort_order": 12
},
{
"number": "4",
"title": "4. System Planning.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 13
},
{
"number": "1",
"title": "1. This Section specifies the methods for data submission by Users to STU for planning and development of the State Transmission System. This Section also specifies the procedures to be adopted by STU in the planning and development of the State Transmission System.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 14
},
{
"number": "2",
"title": "2. Requirement for reinforcement or extension of the State Transmission system arise due to many reasons of which a few are mentioned below:",
"chapter": null,
"content": "(i) Development on a User's system already connected to the State Transmission System.\n(ii) Introduction of a new connection point between the User's system and the State Transmission System.\n(iii) Evacuation system for generating stations within or outside State\n(iv) Reactive compensation.\n(v) A general increase in system capacity due to addition of generation or system load.\n(vi) Transient or steady state stability considerations\n(vii) Cumulative effect of any of the above\n4.2. Objective.\n4.3. Planning Policy.\n(i) Forecast the demand for power within the area of supply based on the forecasts provided by Distribution Licensees. These shall include details of demand forecasts, data methodology and assumptions on which forecasts are based.These forecasts would be annually reviewed and updated, and also whenever major changes are made in the existing system.\n(ii) Prepare a proposal for the requirement of generation for the State to meet the load demand as per the forecast taking into account the existing contracted generation resources.\n(iii) Prepare a transmission plan for the State Transmission System compatible with the above load forecast and generation plan. VAR compensation needed will also be included.\n(iv) Necessary load flow studies shall be carried out for short circuit and transient stability study and relay coordination study for transmission system planning.\n(v) STU shall be responsible to prepare and submit a long term (10 years) plan to BERC for generation expansion and transmission system expansion to fully meet both energy and peak demand.\n(vi) STU shall extend support to Central Transmission Utility (CTU) to finalise the annual planning corresponding to a 5 years forward term for identification of major Inter-State Transmission System including inter-regional schemes which shall fit in with the long term plan developed by CEA.\n4.4. Planning Criterion.\n4.5. Planning responsibility.\n4.6. Planning data.\n(a) Standard Planning Data (Generation)/Standard Planning Data (Distribution) as per Appendix A.\n(b) Detailed Planning Data (Generation)/Detailed Planning Data (Distribution) as per Appendix B.\n(a) Standard Planning Data (Transmission) as per Appendix A.\n(b) Detailed Planning Data (Transmission) as per Appendix B.\n4.7. Implementation.",
"footnote": "",
"is_definition": false,
"sort_order": 15
},
{
"number": "5",
"title": "5. Connection Conditions.",
"chapter": null,
"content": "5.2. Objective.\n(i) All Users or prospective Users are treated in a non-discriminatory manner\n(ii) Any new or modified connection when established shall neither suffer unacceptable effects due to its connection to State Transmission System nor impose any unacceptable effect on the system of existing Users and new connection shall not suffer adversely due to existing Users.\n(iii) A system of acceptable quality is ensured by specifying the required minimum standards for the design and operational criteria to assist the Users in their requirement to comply with the licence obligations.\n(iv) The ownership and responsibility for all equipments is clearly specified in the \"Site Responsibility Schedule\" for every site, where a connection is made.\n5.3. Procedure for application for connection to Transmission System.",
"footnote": "",
"is_definition": false,
"sort_order": 16
},
{
"number": "1",
"title": "1. The User shall meet all necessary conditions as specified in the State Grid Code and submit the application to STU containing all the information as may be specified.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 17
},
{
"number": "2",
"title": "2. STU shall make a formal offer within 60 days of the receipt of the application. The offer shall specify and take into account any work required for the extension or reinforcement of the State Transmission System necessitated by the applicant's proposal and for obtaining any consent necessary for the purpose. STU shall process the application in accordance with the CEA Regulations on Grid Connectivity",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 18
},
{
"number": "3",
"title": "3. If the specified time limit for making the offer against any application is not adequate, STU shall make a preliminary offer within the specified time indicating the extent of further time required for detailed analysis.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 19
},
{
"number": "4",
"title": "4. Any offer made by STU shall remain valid for a period of 60 days and unless accepted before the expiry of such period, shall lapse thereafter.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 20
},
{
"number": "5",
"title": "5. In the event of offer becoming invalid or not accepted by the applicant, STU shall not be bound to consider any further application from the same applicant within 12 months unless the new application is substantially different from the original application.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 21
},
{
"number": "6",
"title": "6. The applicant shall furnish the Detailed Planning Data as per Appendix-B.",
"chapter": null,
"content": "5.4. Rejection of application.\n(i) If such proposed connection is likely to cause breach of any provision of its Licence or any provision of the Grid Code or any provision of IEGC or any criteria or covenants or deeds or Regulations by which STU is bound.\n(ii) If the applicant does not undertake to be bound, in so far as applicable, by the terms of the Grid Code.\n(iii) If the applicant fails to give confirmation and undertakings according to this Section.\n(iv) The reason for rejection of connection to or use of the State Transmission System will be communicated to the applicant by STU within 60 days of the receipt of application.\n5.5. Connection Agreement.\n(i) A condition requiring both agencies to comply with the Grid Code.\n(ii) Details of connection technical requirements and commercial arrangements\n(iii) Details of any capital related payments arising from necessary reinforcement or extension of the system, data communication, RTU etc and demarcation of the same between the concerned parties.\n(iv) A Site Responsibility Schedule (Appendix-D).\n(v) General Philosophy, Guidelines etc on protection and telemetry\n5.6. Site responsibility schedule.\n(i) Ownership of the equipment\n(ii) Responsibility for control of equipment\n(iii) Responsibility for maintenance of equipment\n(iv) Responsibility for operation of equipment\n(v) Responsibility for all matters relating to safety of persons and site.\n(vi) Management of the site.\n5.7. System Performance.\nTarget Range\nUpper limit\n-\n50.20 Hz\nLower limit\n-\n49.50 Hz\nNominal (KV)\n% limit of variation\nMaximum (KV)\nMinimum (KV)\n400\n+5%/- 5%\n420\n380\n220\n+/-10%\n245\n198\n132\n+/-10%\n145\n122\n5.8. Connection Points/interface points.\n(i) Voltage may be 220/132/33 KV or as agreed with STU.\n(ii) Unless specifically agreed with STU, the Connection point with generating station shall be the terminal isolator provided just before the outgoing gantry of the feeders.\n(iii) SGS shall operate and maintain all terminals, communication and protection equipments provided within the generating station.\n(iv) The provisions for the metering between generating station and STU system shall be as per the Metering Code.\n(v) Respective Users shall maintain their equipments from the out going feeders' gantry onwards emanating from generating station'\n(vi) All entities embedded within BSEB system and interfacing the Intra/ State Transmission System shall provide adequate and reliable communication facility so that SLDC is able to record in its SCADA system the MW/ MVAR flows, bus voltages at all the interface points with the intra-state system.\n(ii) Unless specifically agreed with Distribution Licensee, the Connection point with STU shall be the terminal isolator provided just before the outgoing gantry of the feeder to Distribution Licensee or individual EHV consumer as the case may be, from STU sub-station\n(iii) STU shall operate and maintain all terminals, communication and protection equipments provided within its sub-station. The provisions for the metering between STU and Distribution Licensee systems shall be as per the Metering Code. Respective Users shall maintain their equipment beyond the out going gantry of feeders emanating from STU sub-station onwards.\n(i) Voltage may be 220/132/33 KV or as agreed with STU.\n(ii) When IPPs, CPPs, EHV Consumers or the Open Access Customers own sub-stations, the Connection point shall be the terminal isolator provided just before the gantry of outgoing/incoming feeder in their premises.",
"footnote": "",
"is_definition": false,
"sort_order": 22
},
{
"number": "24",
"title": "CHAPTER 3",
"chapter": "CHAPTER 3",
"content": "System Operation Code",
"footnote": "",
"is_definition": false,
"sort_order": 23
},
{
"number": "6",
"title": "6. Operation Planning.",
"chapter": null,
"content": "6.2. Objective.\n(i) Overall real time operation of the State Grid shall be supervised by the SLDC and the STU in accordance with Grid Code.\n(ii) Distribution Licensee shall monitor grid operation of its distribution system and coordinate with the SLDC.\n(iii) All State entities shall comply with the operation guidelines specified hereinafter and co-ordinate with each other, for deriving maximum benefits from the integrated operation and for equitable sharing of obligations.\n(iv) A set of detailed internal operating procedures for the State Grid shall be developed and maintained by the SLDC in consideration with the entities and same shall be consistent with Grid Code. The control rooms of the SLDC, Area LDC, Generating Stations, and EHV substations and any other control centers of all the entities shall be manned round the clock by qualified personnel with adequate training.\n6.3. System security.\n(i) Emergency situations that may result in total grid collapse.\n(ii) Isolation of the system to prevent serious damage to important/costly equipment.\n(iii) When such isolation is specifically instructed by SLDC.\n(iv) On operation of under frequency / islanding scheme as approved at Eastern Region level.\n6.4. Demand Estimation.\n6.5. Demand Control.\n6.6. Load Crash.\ni. Lifting of the load restrictions, if any\nii. Exporting the power to neighbouring Regions/States provided the same does not endanger the security of the ISTS\niii. Backing down of thermal stations with a time lag of 5-10 minutes for short period in merit order.\niv. Closing down of hydel units (subject to non spilling of water and effect on irrigation) keeping in view the inflow of water into canals and safety of canals/hydel channels.",
"footnote": "",
"is_definition": false,
"sort_order": 24
},
{
"number": "7",
"title": "7. Outage Planning.",
"chapter": null,
"content": "7.2. Objective.\n7.3. Outage Planning Process.\n• Major grid disturbance\n• System Isolation\n• Black out in the State\n• Any other event in the system that may have an adverse impact on system security by the proposed outage\n7.4. Annual Outage Planning.\n7.5. Availing of shutdowns schedule.",
"footnote": "",
"is_definition": false,
"sort_order": 25
},
{
"number": "8",
"title": "8. Contingency Planning.",
"chapter": null,
"content": "8.2. Objective.\n8.3. Contingency Planning Procedure.\n• Partial system black out in the State due to multiple tripping of the Transmission lines emanating from power stations/sub-stations\n• Total black out in the State/Region\n• Synchronisation of system islands and system split\n8.4. Restoration Procedure.\n- Total System Black out\n- Partial System Blackout\n- Synchronisation of System Islands and System Split\n8.5. Special Considerations.",
"footnote": "",
"is_definition": false,
"sort_order": 26
},
{
"number": "9",
"title": "9. Cross Boundary Safety.",
"chapter": null,
"content": "9.2. Objective.\n9.3. Designated Officers.\n9.4. Procedure.\n9.5. Special Consideration.",
"footnote": "",
"is_definition": false,
"sort_order": 27
},
{
"number": "10",
"title": "10. Operational Event/Accident Reporting.",
"chapter": null,
"content": "10.2. Objective.\n10.3. Reportable Events.\na. Exceptionally high / low system voltage or frequency.\nb. Serious equipment problem relating to major circuit breaker, transformer or bus bar.\nc. Loss of major Generating Unit. System split, State Transmission System breakaway or Black Start.\nd. Tripping of Transmission Line, ICT (Interconnecting transformer) and capacitor banks.\ne. Major fire incidents.\nf. Force-Majeure condition like flooding or lightning etc.\ng. Major failure of protection.\nh. Equipment and Transmission Line overload.\ni. Accidents-Fatal and Non-Fatal.\nj. Load Crash / Loss of Load\nk. Excessive Drawal deviations.\nI. Minor equipment alarms.\n10.4. Reporting Procedure.\ni. Location of incident.\nii. Date and time of incident.\niii. Plant or equipment involved.\niv. Details of relay indications with nature of fault implications, Antecedent conditions like line flows, bus voltage, generation and demand\nv. Supplies and quantum interrupted and duration if applicable.\nvi. Amount of generation lost if applicable and its duration\nvii. Brief description of incident.\nviii. Estimate of time to return to service.\nix. Name of Organisation\nx. Possibility of alternate arrangement of supply\n10.5. Reporting Form.\n10.6. Major Grid Incidence.\n(b) Periodic Reports - All distribution licensees shall send a weekly report to SLDC on the performance of their respective systems which should cover the following information:\n(i) Voltage profile at all Sub/Stations (66KV) 132KV and above.\n(ii) Average, maximum, minimum demand (both MW and MVAR) met at such S/Stns.\n(iii) Quantum and duration of load shed, with reasons\n(iv) Outage of major elements\n(v) Network constraints\n(vi) Daily energy consumed and energy exchanged by the DISCOM\n(c) SLDC shall post in its website a monthly performance report of the State as a whole covering:\n(i) Hourly demand met and generation for peak any and minimum demand met day. Also the average daily off-peak and peak demands met.\n(ii) Daily average consumption\n(iii) Station-wise daily maximum, minimum and average generation (MW), together with daily energy generation\n(iv) Instances of non-compliance of the State Grid Code\n(v) Progress of construction of new generating units, lines and transformers. Details of generation and transmission outages during the month.\n10.7. Accident Reporting.",
"footnote": "",
"is_definition": false,
"sort_order": 28
},
{
"number": "30",
"title": "CHAPTER 4",
"chapter": "CHAPTER 4",
"content": "Scheduling and Despatch Code",
"footnote": "",
"is_definition": false,
"sort_order": 29
},
{
"number": "11",
"title": "11. Scheduling and Despatch.",
"chapter": null,
"content": "11.2. Objective.\n11.3. General.",
"footnote": "",
"is_definition": false,
"sort_order": 30
},
{
"number": "1",
"title": "1. SLDC will issue despatch instructions required to regulate all generation and imports from IPPs / CPPs according to the 15-minute day ahead generation schedule. In the absence of any despatch instruction by SLDC, SGS shall generate/ export according to the day ahead generation schedule.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 31
},
{
"number": "2",
"title": "2. The SLDC shall regulate the overall State generation in such a manner that generation from following types of power stations shall not be curtailed except under abnormal operating conditions.",
"chapter": null,
"content": "(i) Run of river or canal based hydro stations.\n(ii) Storage type hydro-stations when water level is at peak reservoir level or expected to touch peak reservoir level as per inflows.\n(iii) Generation from non-conventional sources like wind, solar that cannot be stored/ controlled.",
"footnote": "",
"is_definition": false,
"sort_order": 32
},
{
"number": "3",
"title": "3. Despatch instructions to SGS shall be in standard format to be finalized by SLDC.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 33
},
{
"number": "4",
"title": "4. The algebraic sum of scheduled drawals from ISGS, long term open access, and short term open access arrangements shall be the net drawal schedule for the control area of the utility.",
"chapter": null,
"content": "11.4. Generation Scheduling.\ni. By 9.00 hours every day each SGS shall intimate to SLDC the station wise ex- power plant MW and MWh capabilities foreseen for the next day i.e. between 00.00 to 24.00 hrs of the following day, at 15 minutes interval.\nii. By 9.00 hours every day each Distribution Licensees bulk power consumer shall intimate SLDC the overall requirement in MW and MWh for the next day at 15 minutes interval.\niii. After receipt of the information in regard to the availability from different sources, the SLDC shall review aggregate generating capability of ISGS, SGS and the bilateral interchanges, if any, vis-a-vis Distribution Licensees requirements.\niv. By 15.00 hrs, SLDC shall finalise (a) generation schedule of SGS and (b) drawal schedule of each Distribution Licensees. It shall accordingly advise each Distribution Licensees of their drawal schedule and will workout and convey to ERLDC for net drawal schedule in each of the ISGS along with the bilateral exchanges agreed or intended to be had with the other State/States and the estimates of demand / availability in the State and additional power it would like to draw subject to availability.\nv. By 1700 hrs, ERLDC shall convey to SLDC the drawal schedule for Bihar State from each of the ISGS and other short-term bilateral, medium term and long-term schedules and SLDC shall convey to SGS the generation schedule and drawal schedule to Distribution Licensees by 1900 hrs.\nvi. SGS and each Distribution Licensees may inform the modifications / changes to be made, if any, in the above schedule to SLDC by 21.30 hours.\nvii. SLDC after considering the same shall convey revised schedule to ERLDC by 22.00 hrs.\nviii. On receipt of information and after due consultations, the ERLDC shall issue the final generation and drawal schedule by 23.00 hrs, and SLDC shall inform the same to all concerned.\n(i) Transmission System constraints from time to time.\n(ii) 15 minute load requirements as estimated by SLDC.\n(iii) The need to provide operating margins and reserves required to be maintained.\n(iv) The availability of generation from SGS, Central Sector Generators and others together with any constraint in each case.\ni. In case of forced outage of a unit of any SGS, SLDC may revise the generation schedule on the basis of revised declared capability by the affected SGS.\nii. ERLDC may revise the schedule of drawal from Eastern Region and consequently SLDC shall enforce the revisions within Bihar.\n11.5. Drawal Scheduling.\n11.6. Generation Despatch.\n11.7. Responsibilities.",
"footnote": "",
"is_definition": false,
"sort_order": 34
},
{
"number": "12",
"title": "12. Frequency and Voltage Management.",
"chapter": null,
"content": "12.2. Objective.\n(1) To define the responsibilities of all Users in contributing to frequency and voltage management.\n(2) To define the actions required to enable SLDC and STU to maintain the State Transmission System voltages and frequency within acceptable levels in accordance with IEGC guidelines as well as Planning and Security Standards for the State Transmission System specified by the Commission, if any.\n12.3. Frequency Management.\n12.4. Voltage Management.\nVoltage (KV r ms)\nNominal\nMaximum\nMinimum\n400\n420\n380\n220\n245\n198\n132\n145\n122",
"footnote": "",
"is_definition": false,
"sort_order": 35
},
{
"number": "13",
"title": "13. Monitoring of Generation and Drawal.",
"chapter": null,
"content": "13.2. Objective.\n13.3. Monitoring Procedure.\n13.4. Generating Unit Trippings.\n13.5. Monitoring of Drawal.\n13.6. Data Requirement.",
"footnote": "",
"is_definition": false,
"sort_order": 36
},
{
"number": "38",
"title": "CHAPTER 5",
"chapter": "CHAPTER 5",
"content": "Protection Code",
"footnote": "",
"is_definition": false,
"sort_order": 37
},
{
"number": "14",
"title": "14. Protection.",
"chapter": null,
"content": "14.2. Objective.\n14.3. General Principles.\n(1) No item of electrical equipment shall be allowed to remain connected to the State Transmission System unless it is covered by minimum specified protection aimed at reliability, selectivity, speed, stability and sensitivity.\n(2) All Users shall co-operate with STU to ensure correct and appropriate settings of protection to achieve effective, discriminatory removal of faulty equipment within the target clearance time specified in this Section.\n(3) Protective Relay settings shall not be altered, or protection relays bye-passed and/or disconnected without consultation and agreement between all affected Users. In a case where protection is bye-passed and/or disconnected by an agreement, then the cause must be rectified and the protection restored to normal condition as quickly as possible. If agreement has not been reached, the electrical equipment shall be removed from service forthwith.\n14.4. Protection Coordination.\n14.5. Fault Clearance Times & Short-time Ratings.\nNominal Voltage\nMinimum Short Circuit current rating &\n\t\t\t\tduration for Switchgear\nTarget Fault clearance Time\nKV\nKA(rms)\nSeconds\nmsec.\n220 KV\n40\n1\n160\n132 KV\n40\n1\n160\n14.6. Generator Requirements.\n14.7. Transmission Line Requirements.\nMain 1\nMain 2\n• A single scheme three zone, non-switched numeric distance protection with standard built in features like single and three phase tripping, carrier inter-tripping, IDMT over current and earth fault, power swing blocking and LBB protection shall be provided as main protection.\n• The backup protection shall be at least two directional IDMTL over current relays and one directional earth fault relay.\n• For short transmission radial lines, appropriate alternative protection schemes may be adopted.\n• For 33 KV feeders, emanating from Grid S/S, adequate protection with proper co-ordination should be provided at Grid S/S.\n14.8. Transformer Requirements.\ni. All 220 KV class power transformers shall be provided with numeric fast acting differential, REF, open delta (Neutral Displacement Relay) and over-fluxing relays. In addition, there shall be back up IDMTL over current and earth fault protection with directional features. For parallel operation, such back up protection shall have inter-tripping of both HV and LV breakers. For protection against heavy short circuits, the over current relays should incorporate a high set instantaneous element. In addition to electrical protection, transformer own protection viz. Buchholz, OLTC oil surge, gas operated relays, winding temperature protection, oil temperature protection, PRV relay shall be provided for alarm and trip functions.\nii. For 132 KV and 33 KV class transformers of capacity 10 MVA and above, the protection shall be same as mentioned in 14.8 (1) (i) except over-fluxing, REF and PRV relays.\niii. For 132 KV and 33 KV class power transformers less than or equal to 10 MVA provided on either Transmission or Distribution System, over current and E/F with high set instantaneous element along with auxiliary relays for transformer trip and alarm functions as per transformer requirements, shall be provided.\n14.9. Sub-Station Fire Protection.\n14.10. Calibration and Testing.",
"footnote": "",
"is_definition": false,
"sort_order": 38
},
{
"number": "40",
"title": "CHAPTER 6",
"chapter": "CHAPTER 6",
"content": "Metering Code",
"footnote": "",
"is_definition": false,
"sort_order": 39
},
{
"number": "15",
"title": "15. Metering Code.",
"chapter": null,
"content": "15.2. Objective.\n15.3. Scope.\n15.4. Applicability.\n(ii) STU/Transmission Licensees\n(iii) Generating Stations connected to State Transmission System\n(iv) Distribution Licensees connected with State Transmission System\n(v) EHV Consumers of Distribution Licensee(s) directly connected to State Transmission System\n(vi) Open Access Customers availing Open Access on State Transmission system\n(vii) Captive Generators connected to State Transmission System\n15.5. Reference Standards.\n15.6. Meter Installation.\n15.7. Various Standards for Metering Equipment.\nSI. No.\nParticulars\nMeter Type\nMain & Check\nBack up\nCapacitor Bank\nSub-Station Auxiliary\nInter Distribution Licensees\nSecondary Back up\n1\n2\n3\n4\n5\n6\n7\n8\n(1)\nAccuracy class\n(a) Meter\n0.2 S\n0.2 S\n0.5 S\n1.0\n0.2 S\n0.2 S\n(b) CTs\n0.2\n0.2\n0.2\n0.2\n0.2\n0.2\n(c) PTs / CVTs\n0.2\n0.2\n0.2\n0.2\n0.2\n0.2\n(d) CT-PT sets for 33 KV & 11 KV feeders\n0.2\nExisting\nExisting\nExisting\nExisting\nExisting\n(2)\nSalient aspect of meters\n(a) Phase angle and ratio error compensation of\n\t\t\t\tCTs & PTs\nNo\nNo\nNo\nNo\nNo\nNo\n(b) Communication port\n(i) Optical port\nYes\nYes\nNo\nNo\nYes\nYes\n(ii) For remote reading\nYes\nYes\nNo\nNo\nYes\nYes\n(c) Whether both Import & Export features\n\t\t\t\trequired\nYes\nYes\nNo\nNo\nYes\nYes\n(d) Meter memory for 45 days\nYes\nYes\nNo\nNo\nYes\nYes\ni. Operating System Parameters (for balanced and unbalanced load):\na. Operating Voltage Range: The meter shall work satisfactorily on 110 Volts AC (Line-Line) or 415 Volts AC (Line-Line) with variation range of -40% to +20%.\nb Operating Frequency Range: The meter shall work satisfactorily on 50 Hertz with variation range of -5% to +5%.\nc. Operating Power Factor Range: The meter shall work satisfactorily over a power factor range of zero lag to unity to zero lead.\nii. Measuring Elements:\na The meter shall be 3 phase 4 wire type, capable to record and display import and export kWh, kVArh, kVAh and maximum demand in kW and kVA for 3 phase 4 wire AC balanced/unbalanced load for a power factor having range of zero lagging to unity to zero leading in all 4 quadrants. In addition, meter shall also be capable of displaying, on demand, the present status of supply/load, missing potential, CT polarity, current unbalance, anomaly occurrence and logging of occurrences as well as load survey data etc. which shall be down loaded to a user friendly Base Computer System (BCS) through portable data collection devices or CMRI which shall be connected to optical communication port of the meter. Meter shall be equipped with self-diagnostic features also and be capable of recording average values based on their integration on time base for kWh, kVArh, kVAh for at least 45 days. Meter shall be capable of measuring fundamental as well as total energy including harmonics separately.\nb. Energy measurement during demand period shall be such that sampling in the meter is synchronized with the end of the time block otherwise energy measured in a demand period but not stored in that period shall be carried forward. An LED glow or pulse output coincident with end of each demand period need be provided in the meter so as to ensure that demand integration coincided the preset time block.\niii. Display. - Present meter status, real time and date, cumulative energy registers, voltage, currents, power factor, present demand, frequency and meter serial number shall be available on demand through push button. Any interrogation/read operation shall not delete or alter any stored meter data.\niv. Memory. - Numerical values of voltage/current, power factor and cumulative energy registers as well as anomalies/tampered details alongwith date and time of logging of and restoration of anomalies (subject to the meter memory space) shall be logged in the meter memory and shall be available for retrieving with the help of the data collection devices (CMRI) through meter optical port and down loading to BCS.\na. Memory in a static tri-vector meter shall not get 'erased' after reading or retrieving of data through CMRI. Data shall be retained for a minimum of 45 days or shall not get erased from meter until replaced by fresh data. However, desired data can be erased from CMRI, when memory of a CMRI becomes full after downloading of readings of a number of meters, as there is fixed space made available in CMRI for:\ni. Energy registers.\nii. Load survey data.\niii. Anomaly data etc.\nWhen a fresh data is logged in the memory, the oldest data shall disappear automatically.\nv. Test terminal blocks . - The test terminal blocks shall be provided on all meters to facilitate testing of meters in service. Main & back up meters of inter state / major generating stations shall be having the feature of draw out type modular units and shall have automatic CT short circuiting so that meter can be taken out for testing without shut down requirements.\nvi. Meter Power Supply. - Meters of inter state / major generating stations shall be capable of powered with 230 volt alternating current auxiliary supply and 110 volt or 220 volt DC supply of the substation so that metering core of PT/ CVT is never loaded and in case of shut down on feeder/breaker, meter can be interrogated locally or remotely. It shall normally be powered by AC auxiliary supply and shall be switched over to DC supply only when AC auxiliary supply fails.\nvii. Battery back-up . - The meter shall have battery back up for its Real Time Clock (RTC).\nviii. Meter Programmability. - The meters shall be equipped with necessary hardware/software to suit tariff requirements such as ABT, TOD, two-part tariff based on SMD as may be called for from time to time.\na. Three single-phase type current transformers shall be used for 3 phase 4 wire and 3 phase 3 wire measurement system. The secondary current rating of the CTs shall be 1 Ampere particularly for 220 KV, 132 KV, 66 KV measurements. However existing CTs with 5-Ampere secondary current shall also be acceptable provided the connected meters and instrument have base 5 Ampere current rating. For other voltages, 1 Ampere or 5 Ampere shall be employed.\nb. The current transformers shall have dedicated core for metering and wherever feasible, the cores feeding to main meters and check meters shall be separate. The errors of the current transformers shall be checked in the laboratory or at site. However if such facilities are not available, CT test certificates issued by a Government test house or Government recognized test agency shall be referred to.\nc. The total burden connected to each current transformer shall not exceed the rated burden of CT.Total circuit burden shall be kept close to rated burden of CT for minimum error.\na. Either Electromagnetic Voltage Transformers (EVT) or Capacitive Voltage transformer (CVT) should be used for metering purpose. Generally, term VT is used to cover either EVT or CVT. The secondary voltage per phase shall be 110/31/2 volts or 415/31/2 volts. Either dedicated VTs or dedicated core of VTs shall be provided for metering and that wherever feasible, VTs (or their cores) feeding to main meters and backup/check meters shall be separate. Fuses of proper rating shall be provided at appropriate locations in the VT circuit,\nb. The errors of the VTs shall be checked in the lab or at site. However if such facilities are not available, VT test certificates issued by Government test house or Government recognized test agency should be referred to.\nc. The total burden connected to each VT shall not exceed the rated burden of VT. Voltage drop in VT leads shall be within the permissible limits.\nd. The current transformers and voltage transformers shall meet the requirements as per the relevant standards. Where a combined CT/PT unit is provided, the accuracy shall be as specified under relevant IS.\n15.8. Testing Arrangement.\na. Meter test bench with high accuracy, static source and 0.02S class electronic reference standard meter (RS Meter) shall be used for testing and calibration of meters. Meter Testing Laboratories duly equipped with testing benches and other equipments shall be established at suitable locations for testing and calibration of meters by SGS, STU and Distribution Licensee. The Meter Testing benches with 0.02S-class reference standard meter shall also be used for checking and calibration of portable testing equipments.Testing, calibration and maintenance of Energy Meters shall conform to the requirement of IS: 9792 and Testing equipments shall conform to Indian Standards Specification IS: 12346.\nb. Portable test set with static source and electronic reference meter of 0.1 class shall be used for verification and joint testing of accuracy of static tri-vector meters at site on regular/routine basis.\n15.9. Meter Reading.\n15.10. Joint Inspection, Testing, Calibrations.\n15.11. Sealing.\nii. Any seal, applied, shall not be broken or removed except in the presence of or with the prior consent of the agency affixing the seal or on whose behalf the seal has been affixed unless it is necessary to do so in circumstances where (a) both main and check meters are malfunctioning or there occurs a fire or similar hazard and such removal is essential and such consent can not be obtained immediately (b) such action is required for the purpose of attending to the meter failure. In such circumstances, verbal consent shall be given immediately and it must be confirmed in writing forthwith.\niii. Each agency shall control the issue of its own seals and sealing pliers, and shall keep proper register/record of all such pliers and the authorized persons to whom these are issued.\niv. Sealing of the metering system shall be carried out in such a manner so as not to hamper downloading of the data from the meter using CMRI or a remote meter reading system.\n15.12. Interface Metering Arrangement.\na. Meters shall be installed on each Generator terminal, at each Unit Auxiliary Transformer (UAT), and all outgoing feeders at Generating Stations to work out energy generated and net energy delivered by the Power Station in the Grid.\nb. For measurement of energy supplied by major generating stations within the state, meters shall be provided on each outgoing feeder at the power station designated as main meter for billing purpose as per commercial agreement and/or Grid Code Connectivity Conditions.\nc. A Check Meter shall also be provided along with the Main Meter. Meters on each generator and each auxiliary transformer shall work as backup meters.\na For measurement of power delivered by STU to Distribution Licensee, metering shall be provided on the LV side of EHV Power Transformer i.e. 33 KV side of 220/33 KV and 33 KV side of 132/33 KV and 11 KV side of 132/33/11 KV and 11 KV side of 132/11 KV transformers installed in EHV sub-stations.\nb Operational meters shall also be provided on all outgoing 33 KV and 11 KV feeders as back-up meter for energy audit on feeder and reconciliation of energy with respect to energy measured on LV side of EHV Power Transformer.\nc. In case of EHV industrial and other consumers directly fed from 220 KV or 132 KV sub-stations, tariff metering shall be provided on outgoing feeder emanating from EHV sub-station.\na. The energy metering shall be provided at such points of the power lines connecting any two Distribution Systems owned by different Distribution Licensees so that the measured energy gives correct measurement of consumption by either Distribution Licensee.\nb. If installation of metering at such point is not feasible, it shall be provided at nearest sub-station feeding other Distribution System. In such case, energy accounting may be in proportion to installed capacity of Distribution Transformers on the line or as agreed mutually.\n15.13. Supervisory Control and Data Acquisition (SCADA).\n15.14. ABT,Two part and TOD Tariff Capability.\ni. Frequency based ABT compliant meters shall be provided on 33 kV or lower voltage lines feeding each Distribution Licensee area of supply. The function of these meters will be as under:\na. To measure Distribution Licensee-wise Ul (Unscheduled Interchange) energy and corresponding average frequency during 15 minute block.\nb. The Distribution Licensee wise summation of kWh, kW, PF, demand, scheduled interchange/ unscheduled interchange will be done at the main computer station provided at central billing station or at Load Despatch Centre.\nc. For this purpose, the various parameters shall be integrated at one centrally located station preferably at State Load Despatch Centre at Patna through computer and suitable software.\nii. Static tri-vector meters to be provided on LV secondary side of all EHV transformers. The function/duty of this meter will be as under:\na. Measurement of kWh energy supplied to Distribution Licensee for billing purpose.\nb. kW/kVA demand and power factor, 15 minute block-wise as well monthly caused by Discom on each EHV transformer.",
"footnote": "",
"is_definition": false,
"sort_order": 40
},
{
"number": "42",
"title": "CHAPTER 7",
"chapter": "CHAPTER 7",
"content": "Data Registration Code",
"footnote": "",
"is_definition": false,
"sort_order": 41
},
{
"number": "16",
"title": "16. Data Registration.",
"chapter": null,
"content": "16.2. Objective.\n16.3. Responsibility.\n16.4. Data to be registered.\na.\nb. All data to be submitted under the Schedule(s) must be submitted to SLDC / STU or to such other department and/or entity as STU may from time to time notify to Users. The name of the person who is submitting each schedule of data shall be indicated.\nb.\nc. Where a computer data link exists between a User and SLDC/ STU, data may be submitted via this link. The data shall be in the same format as specified for paper transmission except for electronic encoding for which some other format may be more suited. The User shall specify the method to be used in consultation with the SLDC/ STU and resolve issues such as protocols, transmission speeds etc. at the time of transmission.\nc.\n16.5. Special Considerations.\nAppendix A\nAppendix A\nStandard Planning Data\nStandard Planning Data\n(1) General\ni\nSite\nFurnish location map to scale showing roads,\n\t\t\t\trailway lines, Transmission lines, canals, pondage and reservoirs\n\t\t\t\tif any.\nii\nCoal linkage/ Fuel (Like Liquefied Natural Gas,\n\t\t\t\tNaphtha etc.) linkage\nGive information on means of coal\n\t\t\t\ttransport/carriage. In case of other fuels, give details of\n\t\t\t\tsource of fuel and their transport.\niii\nWater Sources\nGive information on availability of water for\n\t\t\t\toperation of the Power Station.\niv\nEnvironmental\nState whether forest or other land areas are\n\t\t\t\taffected.\nv\nSite Map (To Scale)\nShowing area required for Power Station coal\n\t\t\t\tlinkage, coal yard, water pipe lines, ash disposal area, colony\n\t\t\t\tetc.\nvi\nApproximate period of construction\n(2) Connection\ni\nPoint of Connection\nFurnish single line diagram of the proposed\n\t\t\t\tConnection with the system.\nii\nStep up voltage for Connection (kV)\n(3) Station Capacity\ni\nTotal Generating Station capacity (MW)\nState whether development will be carried out in\n\t\t\t\tphases and if so, furnish details.\nii\nNo. of units & unit size (MW)\n(4) Generating Unit Data\ni\nSteam Generating Unit\nState type, capacity, steam pressure, stream\n\t\t\t\ttemperature etc.\nii\nSteam turbine\nState type, capacity.\niii\nGenerator\nType\nRating (MVA)\nSpeed (RPM)\nTerminal voltage (KV)\nRated Power Factor\nReactive Power\n\t\t\t\tCapability\n(MVAr) in the range\n\t\t\t\t0.95 of leading and 0.85 lagging Short Circuit Ratio\nDirect axis\n\t\t\t\t(saturated) transient reactance (% on MVA rating)\nDirect axis\n\t\t\t\t(saturated) sub-transient reactance (% on MVA rating)\nAuxiliary Power\n\t\t\t\tRequirement\nMW and MVAr\n\t\t\t\tCapability curve\nRamp-up and ramp-down\n\t\t\t\trate\nGenerator Characteristic curve\niv\nGenerator\nTransformer\nType\nRated capacity (MVA)\nVoltage Ratio (HV/LV)\nTap change Range (+ %\n\t\t\t\tto - %)\nPercentage Impedance (Positive Sequence at Full\n\t\t\t\tload)\n(1) General\ni\nSite\nGive location map to scale showing roads,\n\t\t\t\trailway lines, and transmission lines.\nii\nSite map (To scale)\nShowing proposed canal, reservoir area, water\n\t\t\t\tconductor system, fore-bay, power house etc.\niii\nSubmerged Area\nGive information on area submerged, villages\n\t\t\t\tsubmerged, submerged forest land, agricultural land etc\niv\nWhether storage type or run of river type\nv\nWhether catchment receiving discharges from\n\t\t\t\tother reservoir or power plant.\nvi\nFull reservoir level\nvii\nMinimum draw down level.\nviii\nTail race level\nix\nDesign Head\nx\nReservoir level v/s energy potential curve\nxi\nRestraint, if any, in water discharges\nxii\nApproximate period of construction.\n(2) Connection\ni\nPoint of Connection\nGive single line diagram proposed Connection\n\t\t\t\twith the Transmission System.\nii\nStep up voltage for Connection (kV)\n(3) Station Capacity\ni\nTotal Power Station capacity (MW)\nState whether development is carried out in\n\t\t\t\tphases and if so furnish details.\nii\nNo. of units & unit size (MW)\n(4) Generating Unit Data\ni\nOperating Head (in Metres)\na. Maximum\nb. Minimum\nc. Average\nHydro Unit\nCapability to operate as synchronous condenser\n\t\t\t\tWater head versus discharges curve (at full and part load) Power\n\t\t\t\trequirement or water discharge while operating as synchronous\n\t\t\t\tcondenser\ni\nTurbine\nState Type and capacity\niii\nGenerator\nType\nRating (MVA)\nSpeed (RPM)\nTerminal voltage (KV)\nRated Power Factor\nReactive Power\n\t\t\t\tCapability (MVAr) in the range 0.95 of leading and 0.85 of\n\t\t\t\tlagging MW & MVAr capability curve of generating unit\nShort Circuit Ratio\nDirect axis transient\n\t\t\t\t(saturated) reactance (% on rated MVA)\nDirect axis\n\t\t\t\tsub-transient (saturated) reactance (% on rated MVA)\nAuxiliary Power Requirement (MW)\niv\nGenerator-Transformer\na.Type\nb. Rated Capacity\n\t\t\t\t(MVA)\nc. Voltage Ratio\n\t\t\t\tHV/LV\nd. Tap change Range\n\t\t\t\t(+% to -%)\ne. Percentage Impedance (Positive Sequence at\n\t\t\t\tFull Load).\nA.2 Standard Planning Data (Transmission)\nSTU shall make arrangements for getting the\n\t\t\t\trequired data from different Departments of STU/other\n\t\t\t\ttransmission licensees (if any) to update its Standard Planning\n\t\t\t\tData in the format given below:\ni. Name of line (Indicating Power Stations and substations to be\n\t\t\t\tconnected).\nii. Voltage of line (KV).\niii. No. of circuits.\niv. Route length (km).\nv. Conductor sizes.\nvi. Line parameters (PU values).\n(a) Resistance/km\n(b) Inductance/km\n(c) Susceptance/ km\nvii. Approximate power flow expected- MW & MVAr.\nviii. Terrain of the route- Give information regarding nature of\n\t\t\t\tterrain i.e. forest land, fallow land, agricultural and river\n\t\t\t\tbasin, hill slope etc.\nix. Route map (to scale) - Furnish topographical map showing the\n\t\t\t\tproposed route showing existing power lines and telecommunication\n\t\t\t\tlines.\nx. Purpose of Connection- Reference to Scheme, wheeling to other\n\t\t\t\tStates etc.\nxi. Approximate period of Construction.\nA.3. Standard Planning Data (Distribution)\n(1) General\n(1) General\ni\nArea Map (to scale) Furnish map of Bihar duly\n\t\t\t\tmarked with the area of supply relevant for the Distribution\n\t\t\t\tLicence.\nii\nConsumer Data Furnish categories of consumers,\n\t\t\t\ttheir numbers and connected loads.\niii\nReference to Electrical Divisions presently in\n\t\t\t\tcharge of the Distribution.\n(2) Connection\n(2) Connection\ni\nPoints of Connection Furnish single line diagram\n\t\t\t\tshowing points of Connection\nii\nVoltage of supply at points of Connection\niii\nNames of Grid Sub-Station feeding the points of\n\t\t\t\tConnection\n(3) Lines and Substations\n(3) Lines and Substations\ni\nLine Data Furnish lengths of line and voltages\n\t\t\t\twithin the Area. '\nii\nSub-station Data Furnish details of 132/11 KV\n\t\t\t\tsub-stations, 33/11 KV sub-station, capacitor installations\n(4) Loads\n(4) Loads\ni\nLoads drawn at points of Connection.\nii\nDetails of loads fed at EHV, if any. Give name\n\t\t\t\tof consumer, voltage of supply, contract demand/load and name of\n\t\t\t\tGrid Substation from which line is drawn, length of EHV line from\n\t\t\t\tGrid Sub-station to consumer's premises.\niii\nReactive Power compensation installed\n(5) Demand Data (for All Loads 1 Mw and\n\t\t\t\tAbove)\n(5) Demand Data (for All Loads 1 Mw and\n\t\t\t\tAbove)\ni\nType of load State whether furnace loads,\n\t\t\t\trolling mills, traction loads, other industrial loads, pumping\n\t\t\t\tloads etc.\nii\nRated voltage and phase\niii\nElectrical loading of equipment State number and\n\t\t\t\tsize of motors, types of drive and control arrangements.\niv\nSensitivity of load to voltage and frequency of\n\t\t\t\tsupply.\nv\nMaximum Harmonic content of load.\nvi\nAverage and maximum phase unbalance of load.\nvii\nNearest sub-station from which load is to be\n\t\t\t\tfed.\nviii\nLocation map to scale Showing location of load\n\t\t\t\twith reference to lines and sub-stations in the vicinity.\n(6) Load Forecast Data\n(6) Load Forecast Data\ni\nPeak load and energy forecast for each category\n\t\t\t\tof loads for each of the succeeding 5 years.\nii\nDetails of methodology and assumptions on which\n\t\t\t\tforecasts are based.\niii\nDetails of loads 1 MW\n\t\t\t\tand above.\na. Name of\n\t\t\t\tprospective consumer.\nb. Location and\n\t\t\t\tnature of load.\nc. Sub-Station from\n\t\t\t\twhich to be fed.\nd. Voltage of supply.\ne. Phasing of load.\nAppendix B\nAppendix B\nDetailed Planning Date\nDetailed Planning Date\nB.1 Detailed Planning Data (Generation)\n(1) General\ni. Name of Power Station.\nii. Number and capacity of Generating Units (MVA).\niii. Ratings of all major equipments (Boilers and major accessories, Turbines, Alternators, Generator Unit Transformers etc).\niv. Single line Diagram of Power Station and switch-yard.\nv. Relaying and metering diagram.\nvi. Neutral Grounding of Generating Units.\nvii. Excitation control- (What type is used? e.g. Thyristor, Fast Brushless Excitors)\nviii. Earthing arrangements with earth resistance values.\n(2) Protection and Metering\ni. Full description including settings for all relays and protection systems installed on the Generating Unit, Generator unit Transformer, Auxiliary Transformer and electrical motor of major equipments listed, but not limited to, under Sec. 3 (General).\nii. Full description including settings for all relays installed on all outgoing feeders from Power Station switchyard, Tie circuit breakers, and incoming circuit breakers.\niii. Full description of inter-tripping of circuit breakers at the point or points of Connection with the Transmission System.\niv. Most probable fault clearance time for electrical faults on the User's System.\nv. Full description of operational and commercial metering schemes.\n(3) Switch-Yard\ni. In relation to interconnecting transformers:",
"footnote": "",
"is_definition": false,
"sort_order": 42
},
{
"number": "1",
"title": "1. Rated MVA.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 43
},
{
"number": "2",
"title": "2. Voltage Ratio.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 44
},
{
"number": "3",
"title": "3. Vector Group.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 45
},
{
"number": "4",
"title": "4. Positive sequence reactance for maximum, minimum, normal Tap. (% on MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 46
},
{
"number": "5",
"title": "5. Positive sequence resistance for maximum, minimum, normal Tap. (% on MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 47
},
{
"number": "6",
"title": "6. Zero sequence reactance (% on MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 48
},
{
"number": "7",
"title": "7. Tap changer Range (+% to -%) and steps.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 49
},
{
"number": "8",
"title": "8. Type of Tap changer, (off/on load).",
"chapter": null,
"content": "ii. In relation to switchgear including circuit breakers, isolators on all circuits connected to the points of Connection:",
"footnote": "",
"is_definition": false,
"sort_order": 50
},
{
"number": "1",
"title": "1. Rated voltage (kV).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 51
},
{
"number": "2",
"title": "2. Type of circuit breaker (MOCB/ABCB/SF6).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 52
},
{
"number": "3",
"title": "3. Rated short circuit breaking current (kA) 3 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 53
},
{
"number": "4",
"title": "4. Rated short circuit breaking current (kA) 1 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 54
},
{
"number": "5",
"title": "5. Rated short circuit making current (kA) 3 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 55
},
{
"number": "6",
"title": "6. Rated short circuit making current (kA) 1 -phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 56
},
{
"number": "7",
"title": "7. Provisions of auto reclosing with details.",
"chapter": null,
"content": "iii. In relation to the Lightning Arresters -Technical data\niv. In relation to the Communication - Details of communication equipment installed at points of connections.\nv. In relation to the Basic Insulation Level (kV) -",
"footnote": "",
"is_definition": false,
"sort_order": 57
},
{
"number": "1",
"title": "1. Busbar.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 58
},
{
"number": "2",
"title": "2. Switchgear.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 59
},
{
"number": "3",
"title": "3. Transformer bushings.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 60
},
{
"number": "4",
"title": "4. Transformer windings.",
"chapter": null,
"content": "(4) Parameters of Generating Units\ni. Rated terminal voltage (kV).\nii. Rated MVA.\niii. Rated MW.\niv. Speed (rpm) or number of poles.\nv. Inertia constant H (MW Sec./MVA).\nvi. Short circuit ratio.\nvii. Direct axis synchronous reactance (% on MVA) Xd.\nviii. Direct axis (saturated) transient reactance (% on MVA) Xd'.\nix. Direct axis (saturated) sub-transient reactance (% on MVA) Xd\".\nx. Quadrature axis synchronous reactance (% on MVA) Xq .\nxi. Quadrature axis (saturated) transient reactance (% on MVA) Xq'.\nxii. Quadrature axis (saturated) sub-transient reactance (% on MVA) Xq\".\nxiii. Direct axis transient open circuit time constant (Sec) T'do.\nxiv. Direct axis sub-transient open circuit time constant (See) T\"do.\nxv. Quadrature axis transient open circuit time constant (Sec) T'qo.\nxvi. Quadrature axis sub-transient open circuit time constant (Sec) T\"qo.\nxvii. Stator Resistance (Ohm)Ra.\nxviii. Neutral grounding details.\nxix. Stator leakage reactance (Ohm) X1.\nxx. Stator time constant (Sec).\nxxi. Rated Field current (A).\nxxii. Open Circuit saturation characteristic for various terminal Voltages giving the compounding current to achieve the same.\nxxiii. MW and MVAr Capability curve\n(5) Parameters of Excitation Control System\ni. Type of Excitation.\nii. Maximum Field Voltage.\niii. Minimum Field Voltage.\niv. Rated Field Voltage.\nv. Details of excitation loop in block diagrams showing transfer functions i of individual elements using I.E.E.E. symbols.\nvi. Dynamic characteristics of over - excitation limiter.\nvii. Dynamic characteristics of under-excitation limiter.\n(6) Parameters of Governor\ni. Governor average gain (MW/Hz).\nii. Speeder motor setting range.\niii. Time constant of steam or fuel Governor valve.\niv. Governor valve opening limits.\nv. Governor valve rate limits.\nvi. Time constant of Turbine.\nvii. Governor block diagram showing transfer functions of individual elements using I.E.E.E. symbols.\n(7) Operational Parameters\ni. Minimum time between synchronizing different Generating Units in a Power Station.\nii. The minimum block load requirements on synchronizing.\niii. Time required for synchronizing a Generating Unit for the following conditions:",
"footnote": "",
"is_definition": false,
"sort_order": 61
},
{
"number": "1",
"title": "1. Hot",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 62
},
{
"number": "2",
"title": "2. Warm",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 63
},
{
"number": "3",
"title": "3. Cold",
"chapter": null,
"content": "iv. Maximum Generating Unit loading rates for the following conditions:",
"footnote": "",
"is_definition": false,
"sort_order": 64
},
{
"number": "1",
"title": "1. Hot",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 65
},
{
"number": "2",
"title": "2. Warm",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 66
},
{
"number": "3",
"title": "3. Cold",
"chapter": null,
"content": "v. (v) Minimum load without oil support (MW).\n(8) General Status\ni. Detailed Project report.\nii. Status Report",
"footnote": "",
"is_definition": false,
"sort_order": 67
},
{
"number": "1",
"title": "1. Land",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 68
},
{
"number": "2",
"title": "2. Coal",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 69
},
{
"number": "3",
"title": "3. Water",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 70
},
{
"number": "4",
"title": "4. Environmental clearance",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 71
},
{
"number": "5",
"title": "5. Rehabilitation of displaced persons",
"chapter": null,
"content": "iii. Techno-economic approval by Central Electricity Authority (CEA).\niv. Approval of State Government/Government of India.\nv. Financial Tie-up.\n(9) Connection\ni. Reports of Studies for parallel operation with the State Transmission System.\nii. Short Circuit studies\niii. Stability Studies.\niv. Load Flow Studies.\nv. Proposed Connection with the State Transmission System.\na. Voltage\nb. No. of circuits\nc. Point of Connection.\nB.1.2 Hydro-Electric Stations (For SGS)\n(1) General\ni. Name of Power Station.\nii. No and capacity of units. (MVA)\niii. Ratings of all major equipment.\na. Turbines (HP)\nb. Generators (MVA)\nc. Generator Transformers (MVA)\nd. Auxiliary Transformers (MVA)\niv. Single line diagram of Power Station and switch-yard.\nv. Relaying and metering diagram.\nvi. Neutral grounding of Generator.\nvii. Excitation control.\nviii. Earthing arrangements with earth resistance values.\nix. Reservoir Data.\na. Salient features\nb. Type of Reservoir",
"footnote": "",
"is_definition": false,
"sort_order": 72
},
{
"number": "1",
"title": "1. Multipurpose",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 73
},
{
"number": "2",
"title": "2. For Power",
"chapter": null,
"content": "c. Operating Table with",
"footnote": "",
"is_definition": false,
"sort_order": 74
},
{
"number": "1",
"title": "1. Area capacity curves and",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 75
},
{
"number": "2",
"title": "2. Unit capability at different net heads",
"chapter": null,
"content": "(2) Protection\ni. Full description including settings for all relays and protection systems installed on the Generating Unit, Generator transformer, auxiliary transformer and electrical motor of major equipment included, but not limited to those listed, under Sec. 3 (General).\nii. Full description including settings for all relays installed on all outgoing feeders from Power Station switch-yard, tiebreakers, and incoming breakers.\niii. Full description of inter-tripping of breakers at the point or points of Connection with the Transmission System.\niv. Most Probable fault clearance time for electrical faults on the User's System.\n(3) Switch-Yard\ni. Interconnecting transformers:",
"footnote": "",
"is_definition": false,
"sort_order": 76
},
{
"number": "1",
"title": "1. Rated MVA",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 77
},
{
"number": "2",
"title": "2. Voltage Ratio",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 78
},
{
"number": "3",
"title": "3. Vector Group",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 79
},
{
"number": "4",
"title": "4. Positive sequence reactance for maximum, minimum and normal Tap.(% on MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 80
},
{
"number": "5",
"title": "5. Positive sequence resistance for maximum, minimum and normal Tap.(% on MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 81
},
{
"number": "6",
"title": "6. Zero sequence reactance (% on MVA)",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 82
},
{
"number": "7",
"title": "7. Tap changer range (+% to -%) and steps.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 83
},
{
"number": "8",
"title": "8. Type of Tap changer (off/on load).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 84
},
{
"number": "9",
"title": "9. Neutral grounding details.",
"chapter": null,
"content": "ii. Switchgear (including circuit breakers, Isolators on all circuits connected to the points of Connection).",
"footnote": "",
"is_definition": false,
"sort_order": 85
},
{
"number": "1",
"title": "1. Rated voltage (KV).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 86
},
{
"number": "2",
"title": "2. Type of Breaker (MOCB/ABCB/SF6).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 87
},
{
"number": "3",
"title": "3. Rated short circuit breaking current (KA) 3 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 88
},
{
"number": "4",
"title": "4. Rated short circuit breaking current (KA) 1 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 89
},
{
"number": "5",
"title": "5. Rated short circuit making current (KA) 3 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 90
},
{
"number": "6",
"title": "6. Rated short circuit making current (KA) 1 phase.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 91
},
{
"number": "7",
"title": "7. Provisions of auto re-closing with details.",
"chapter": null,
"content": "iii. Lightning Arresters\nTechnical data\niv. Communications\nDetails of Communications equipment installed at points of connections.\nv. Basic Insulation Level (KV)",
"footnote": "",
"is_definition": false,
"sort_order": 92
},
{
"number": "1",
"title": "1. Bus bar.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 93
},
{
"number": "2",
"title": "2. Switchgear.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 94
},
{
"number": "3",
"title": "3. Transformer Bushings",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 95
},
{
"number": "4",
"title": "4. Transformer windings.",
"chapter": null,
"content": "(4) Generating Units\ni. Parameters of Generator",
"footnote": "",
"is_definition": false,
"sort_order": 96
},
{
"number": "1",
"title": "1. Rated terminal voltage (KV).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 97
},
{
"number": "2",
"title": "2. Rated MVA.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 98
},
{
"number": "3",
"title": "3. Rated MW",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 99
},
{
"number": "4",
"title": "4. Speed (rpm) or number of poles.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 100
},
{
"number": "5",
"title": "5. Inertia constant H (MW sec./MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 101
},
{
"number": "6",
"title": "6. Short circuit ratio.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 102
},
{
"number": "7",
"title": "7. Direct axis synchronous reactance Xd (% on MVA).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 103
},
{
"number": "8",
"title": "8. Direct axis (saturated) transient reactance (% on MVA) X'd.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 104
},
{
"number": "9",
"title": "9. Direct axis (saturated) sub-transient reactance (% on MVA) X\"d.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 105
},
{
"number": "10",
"title": "10. Quadrature axis synchronous reactance (% on MVA) Xq.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 106
},
{
"number": "11",
"title": "11. Quadrature axis (saturated) transient reactance (% on MVA) X'q.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 107
},
{
"number": "12",
"title": "12. Quadrature axis (saturated) sub-transient reactance (% on MVA) X\"q.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 108
},
{
"number": "13",
"title": "13. Direct axis transient open circuit time constant (sec) T'do.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 109
},
{
"number": "14",
"title": "14. Direct axis sub-transient open circuit time constant (sec) T\"do.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 110
},
{
"number": "15",
"title": "15. Quadrature axis transient open circuit time content (sec) T'qo.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 111
},
{
"number": "16",
"title": "16. Quadrature axis transient open circuit time constant (sec) T\"qo.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 112
},
{
"number": "17",
"title": "17. Stator Resistance (Ohm) Ra.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 113
},
{
"number": "18",
"title": "18. Stator leakage reactance (Ohm) X1.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 114
},
{
"number": "19",
"title": "19. Stator time constant (Sec).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 115
},
{
"number": "20",
"title": "20. Rated Field current (A).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 116
},
{
"number": "21",
"title": "21. Neutral grounding details.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 117
},
{
"number": "22",
"title": "22. Open Circuit saturation characteristics of the Generator for various terminal voltages giving the compounding current to achieve this.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 118
},
{
"number": "23",
"title": "23. Type of Turbine.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 119
},
{
"number": "24",
"title": "24. Operating Head (Metres)",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 120
},
{
"number": "25",
"title": "25. Discharge with full gate opening (cumecs)",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 121
},
{
"number": "26",
"title": "26. Speed Rise on total Load throw off(%).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 122
},
{
"number": "27",
"title": "27. MW and MVAr Capability curve",
"chapter": null,
"content": "ii. Parameters of excitation control system:\niii. Parameters of governor:\niv. Operational parameter:",
"footnote": "",
"is_definition": false,
"sort_order": 123
},
{
"number": "1",
"title": "1. Minimum notice required to Synchronise a Generating Unit from desynchronisation.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 124
},
{
"number": "2",
"title": "2. Minimum time between Synchronising different Generating Units in a Power Station.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 125
},
{
"number": "3",
"title": "3. Minimum block load requirements on Synchronising.",
"chapter": null,
"content": "(5) General Status\ni. Detailed Project Report.\nii. Status Report.",
"footnote": "",
"is_definition": false,
"sort_order": 126
},
{
"number": "1",
"title": "1. Topographical survey",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 127
},
{
"number": "2",
"title": "2. Geological survey",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 128
},
{
"number": "3",
"title": "3. Land",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 129
},
{
"number": "4",
"title": "4. Environmental Clearance",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 130
},
{
"number": "5",
"title": "5. Rehabilitation of displaced persons.",
"chapter": null,
"content": "iii. Techno-economic approval by Central Electricity Authority.\niv. Approval of State Government/Government of India.\nv. Financial Tie-up.\n(6) Connection\ni. Reports of Studies for parallel operation with the State Transmission System.",
"footnote": "",
"is_definition": false,
"sort_order": 131
},
{
"number": "1",
"title": "1. Short Circuit studies",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 132
},
{
"number": "2",
"title": "2. Stability Studies.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 133
},
{
"number": "3",
"title": "3. Load Flow Studies.",
"chapter": null,
"content": "ii. Proposed Connection with the State Transmission System.",
"footnote": "",
"is_definition": false,
"sort_order": 134
},
{
"number": "1",
"title": "1. Voltage",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 135
},
{
"number": "2",
"title": "2. No. of circuits",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 136
},
{
"number": "3",
"title": "3. Point of Connection.",
"chapter": null,
"content": "(7) Reservoir Data\ni. Dead Capacity\nii. Live Capacity\nB.2 Detailed System Data-Transmission\n(1) General\ni. Single line diagram of the Transmission System down to 66KV.33KV bus at Grid Sub-station detailing:",
"footnote": "",
"is_definition": false,
"sort_order": 137
},
{
"number": "1",
"title": "1. Name of Sub-station.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 138
},
{
"number": "2",
"title": "2. Power Station connected.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 139
},
{
"number": "3",
"title": "3. Number and length of circuits.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 140
},
{
"number": "4",
"title": "4. Interconnecting transformers.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 141
},
{
"number": "5",
"title": "5. Sub-station bus layouts.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 142
},
{
"number": "6",
"title": "6. Power transformers.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 143
},
{
"number": "7",
"title": "7. Reactive compensation equipment.",
"chapter": null,
"content": "ii. Sub-station layout diagrams showing:",
"footnote": "",
"is_definition": false,
"sort_order": 144
},
{
"number": "1",
"title": "1. Bus bar layouts.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 145
},
{
"number": "2",
"title": "2. Electrical circuitry, lines, cables, transformers, switchgear etc.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 146
},
{
"number": "3",
"title": "3. Phasing arrangements.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 147
},
{
"number": "4",
"title": "4. Earthing arrangements.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 148
},
{
"number": "5",
"title": "5. Switching facilities and interlocking arrangements.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 149
},
{
"number": "6",
"title": "6. Operating voltages.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 150
},
{
"number": "7",
"title": "7. Numbering and nomenclature:",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 151
},
{
"number": "8",
"title": "8. Transformers.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 152
},
{
"number": "9",
"title": "9. Circuits.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 153
},
{
"number": "10",
"title": "10. Circuit breakers.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 154
},
{
"number": "11",
"title": "11. Isolating switches.",
"chapter": null,
"content": "(2) Line Parameters (for all circuits)\ni. Designation of Line.",
"footnote": "",
"is_definition": false,
"sort_order": 155
},
{
"number": "1",
"title": "1. Length of line (km).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 156
},
{
"number": "2",
"title": "2. Number of circuits.Per Circuit values.",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 157
},
{
"number": "3",
"title": "3. Operating voltage (KV).",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 158
},
{
"number": "4",
"title": "4. Positive Phase sequence reactance (pu on 100 MVA) X1",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 159
},
{
"number": "5",
"title": "5. Positive Phase sequence resistance (pu on 100 MVA) R1",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 160
},
{
"number": "6",
"title": "6. Positive Phase sequence susceptance (pu on 100 MVA) B1",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 161
},
{
"number": "7",
"title": "7. Zero Phase sequence reactance (pu on 100 MVA) X0",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 162
},
{
"number": "8",
"title": "8. Zero Phase sequence resistance (pu on 100 MVA) R0",
"chapter": null,
"content": "",
"footnote": "",
"is_definition": false,
"sort_order": 163
},
{
"number": "9",
"title": "9. Zero Phase sequence susceptance (pu on 100 MVA) B0",
"chapter": null,
"content": "(3)Transformer Parameters (For all transformers)\ni. Rated MVA\nii. Voltage Ratio\niii. Vector Group\niv. Positive sequence reactance, maximum, minimum and normal (pu on 100 MVA) X1\nv. Positive sequence resistance, maximum, minimum and normal (pu on 100 MVA) R1\nvi. Zero sequence reactance (pu on 100 MVA).\nvii. Tap change range (+% to -%) and steps.\nviii. Details of Tap changer. (Off/On load).\n(4) Equipment Details (For all substations)\ni. Circuit Breakers\nii. Isolating switches\niii. Current Transformers\niv. Potential Transformers /CVTs\n(5) Relaying and Metering\ni. Protection relays installed for all transformers and feeders along with their settings and level of co-ordination with other Users.\nii. Metering Details.\n(6) System Studies\ni. Load Flow studies (Peak and lean load for maximum hydro and maximum thermal generation).\nii. Transient stability studies for three-phase fault in critical lines.\niii. Dynamic Stability Studies\niv. Short circuit studies (three-phase and single phase to earth)\nv. Transmission and Distribution Losses in the Transmission System.\n(7) Demand Data (For all substations)\n(8) Reactive Compensation Equipment\ni. Type of equipment (fixed or variable).\nii. Capacities and/or Inductive rating or its operating range in MVAr.\niii. Details of control.\niv. Point of Connection to the System.\nB.3 Detailed Planning Data (Distribution)\n(1) General\ni. Distribution map (To scale). Showing all lines up to 11KV and substations belonging to the Supplier.\nii. Single line diagram of Distribution System (showing distribution lines from points of Connection with the Transmission System, 132/11 kV sub stations 66/11 KV substations, 33/11 KV substations, and consumer bus in case of consumers fed directly from the Transmission System).\niii. Numbering and nomenclature of lines and sub-stations (Identified with feeding Grid sub-stations of the Transmission and concerned 220/ 11 kV, 132/11 kV, 66/11 kV and 33/11 KV sub-station of Licensee).\n(2) Connection\ni. Points of Connection (Furnish details of existing arrangement of Connection).\nii. Details of metering at points of Connection.\n(3) Loads\ni. Details of major loads of 1 MW and above to be contracted for next 5 years.\nii. Demand profile of Distribution System (Current & Forecast)\nAppendix C\nAppendix C\nOperational Planning Data\nOperational Planning Data\nC.1 Outage Planning Data\nC.1 Outage Planning Data\nC.1.1 Demand Estimates\nFor Distribution Licensees\nItem\nDue date/Time\n(a)\nEstimated aggregate month-wise annual sales of\n\t\t\t\tEnergy in Million Units and peak and lean demand in MW & MVAr\n\t\t\t\tat each Connection point for the next financial year.\n15th November of current year\n(b)\nEstimated aggregate day-wise monthly sales of\n\t\t\t\tEnergy in million Units and peak and lean demand in MW & MVAr\n\t\t\t\tat each Connection point for the next month.\n25th of current month\n(c)\n15 Minute block-wise demand estimates for the\n\t\t\t\tday ahead.\n9.00 Hours every day.\n(2) Estimates of Load Shedding for Distribution\n\t\t\t\tLicensee\nItem\nDue date/Time\n(a)\nDetails of discrete load blocks that may be\n\t\t\t\tshed to comply with instructions issued by SLDC when required,\n\t\t\t\tfrom each connection point.\nSoon after connection is made.\n(3) Year ahead outage\n\t\t\t\tprogramme (For the financial year)\n(i) Generation outage programme for (SGS)\nItem\nDue date/Time\n(a)\nIdentification of Generating Unit.\n15th November each year\n(b)\nMW, Which will not be available as a result of\n\t\t\t\tOutage.\n(c)\nPreferred start date and start-time or ranges\n\t\t\t\tof start dates and start times and period of outage.\n(d)\nIf outages are required to meet statutory\n\t\t\t\trequirement, then the latest - date by which outage must be\n\t\t\t\ttaken.\n(ii) Year ahead outage programme (Affecting Transmission System)\nItem\nDue date /Time\n(a)\nMW, which will not be available as a result of\n\t\t\t\tOutage from Imports through external connections.\n1st November each year\n(b)\nStart date and start time and period of Outage.\n(iii) Year ahead CPP's outage programme (Affecting Transmission\n\t\t\t\tSystem)\nItem\nDue date/Time\n(a)\nMW, which will not be available as a result of\n\t\t\t\tOutage from Imports through external connections.\n30th November each year\n(b)\nStart date and start time and period of Outage.\n(iv) Year ahead Distribution Licensees outage programme\n\t\t\t\t(Affecting Transmission System)\nItem\nDue date/Time\n(a)\nLoads in MW not available from any connection\n\t\t\t\tpoint. Identification of connection point.\n15th November each year\n(b)\nPeriod of suspension of drawal with start date\n\t\t\t\tand start time.\n(v) STU's Overall outage programme\nItem\nDue date/Time\n(a)\nReport on proposed outage programme to ERPC\n15th February each year\n(b)\nRelease of finally agreed outage plan\n15th February each year\nC-2. Generation Scheduling Data\nC-2. Generation Scheduling Data\nFor SGS\nItem\nDue date/ Time\n(a)\nDay ahead 15-minute block-wise MW/MVAr\n\t\t\t\tavailability (00.00 - 24.00 Hours) of SGS.\n9.00 hrs\n(b)\nDay ahead 15-minute block-wise MW import/export\n\t\t\t\tfrom CPP's.\n9.00 hrs\n(c)\nStatus of Generating Unit Excitation AVR in\n\t\t\t\tservice (Yes/No).\n9.00 hrs\n(d)\nStatus of Generating Unit Speed Control System.\n\t\t\t\tGovernor in service (Yes/No).\n9.00 hrs\n(e)\nSpinning reserve capability (MW).\n9.00 hrs\n(f)\nBacking down capability with/without oil\n\t\t\t\tsupport (MW).\n9.00 hrs\n(g)\nHydro reservoir levels and restrictions.\n9.00 hrs\n(h)\nGenerating Units 15-minute block-wise summation\n\t\t\t\toutputs (MW)\n9.00 hrs\n(i)\nDay ahead 15-minute block-wise MW entitlements\n\t\t\t\tfrom Central Sector Generation Power Stations from ERLDC.\n10.00 hrs\nC-3 Capability Data For SGS Item (a) Generators and IPPs shall submit to STU\n\t\t\t\tup-to-date capability curves for all Generating Unit. On receipt of request from STU/SLDC. (b) CPPs shall submit to STU net return capability\n\t\t\t\tthat shall be available for export /import from Transmission\n\t\t\t\tSystem On receipt of request from STU/SLDC.\nC-3 Capability Data\nC-3 Capability Data\nFor SGS\nItem\n(a)\nGenerators and IPPs shall submit to STU\n\t\t\t\tup-to-date capability curves for all Generating Unit.\nOn receipt of request from STU/SLDC.\n(b)\nCPPs shall submit to STU net return capability\n\t\t\t\tthat shall be available for export /import from Transmission\n\t\t\t\tSystem\nOn receipt of request from STU/SLDC.\nC-4 Response to Frequency Change\nC-4 Response to Frequency Change\nFor SGS\nItem\n(a)\nPrimary Response in MW at different levels of\n\t\t\t\tloads ranging from minimum generation to registered capacity for\n\t\t\t\tfrequency changes resulting in fully opening of governor valve.\nOn receipt of request from STU/SLDC.\n(b)\nSecondary response in MW to frequency changes\nOn receipt of request from STU /SLDC.\nC-5 Monitoring of Generation\nC-5 Monitoring of Generation\nFor SGS\nItem\n(a) SGS shall provide 15-minute block-wise\n\t\t\t\tgeneration summation to SLDC.\nReal time basis\n(b) CPPs shall provide 15-minute block-wise\n\t\t\t\texport / import MW to SLDC.\nReal time basis\n(c) Logged readings of Generators to SLDC.\nAs required\n(d) Detailed report of generating unit tripping\n\t\t\t\ton monthly basis.\nIn the first week of the succeeding month\nC-6 Essential and Non Essential Load Data\nC-6 Essential and Non Essential Load Data\nFor SGS\nItem\nDue date/Time\n(a)\nSchedule of essential and non-essential loads\n\t\t\t\ton each discrete load block for purposes of load shedding.\nAs soon as possible after connection\nAppendix D:\nAppendix D:\nSite Responsibility Schedule\nSite Responsibility Schedule\nName of Power Station / Sub - Station:\nSite Owner:\nSite Manager:\nTel. Number:\nFax Number:\nItem of Plant / Apparatus\nPlant Owner\nSafety responsibility\nControl responsibility\nOperation responsibility\nMaintenance responsibility\nRemarks\n________KV Switch-yard\nAll equipment including bus bars\nfeeders\nGenerating units\nAppendix E:\nAppendix E:\nIncident Reporting\nIncident Reporting\nDate:___________________\nTime:___________________\nS.No.\nItem\nDetails\n1\nDate and time of incident\n2\nLocation of incident\n3\nType of incident\n4\nSystem parameters before the incident (voltage, frequency, flows,\n\t\t\t\tgeneration etc.)\n5\nRelay indications received and performance of protection\n6\nDamage to equipment\n7\nSupplies interrupted and duration, if applicable\n8\nAmount of generation lost, if applicable\n9\nPossibility of alternate supply arrangement\n10\nEstimate of time to return to service\n11\nCause of incident\n12\nAny other relevant information and remedial action taken\n13\nRecommendations for future improvement / repeat incident\n14\nName of the organization",
"footnote": "",
"is_definition": false,
"sort_order": 164
}
],
"metadata": {
"Act ID": "Last Updated 26th December, 2019 [bh605]",
"Act Number": "Published vide Notification No. BERC/Regl-1/2009 02-238, dated 23.07.2010",
"Enactment Date": "",
"Act Year": "2010",
"Short Title": "Bihar Electricity Grid Code, 2010",
"Type": "STATE",
"Location": "Bihar"
},
"updated_at": "2026-09-29 21:55:19"
}