Central Electricity Regulatory Commission (Indian Electricity Grid Code) Regulations, 2010
Preamble
In exercise of powers conferred under clause (h) of sub-section (1) of Section 79 read with clause (g) of sub-section (2) of Section 178 of the Electricity Act, 2003 (36 of 2003), and all other powers enabling it in this behalf, the Central Electricity Regulatory Commission hereby makes the following regulations.
1 . Short title, extent and commencement.--
(1) These Regulations may be called the Central Electricity Regulatory Commission (Indian Electricity Grid Code) Regulations, 2010.
(2) These Regulations shall come into force from 3.5.2010.
(3) These regulations shall supersede the Indian Electricity Grid Code, 2006 which came into effect from 1.4.2006.
2 . Definitions.--
(1) In these Regulations unless the context otherwise requires:
| a) | Act means | the Electricity Act, 2003 as amended from time to time; |
| b) | Ancillary Services means | in relation to power system (or grid) operation, the services necessary to support the power system (or grid) operation in maintaining power quality, reliability and security of the grid, eg. active power support for load following, reactive power support, black start, etc; |
| c) | Automatic Voltage Regulator (AVR) means | a continuously acting automatic excitation control system to control the voltage of a Generating Unit measured at the generator terminals; |
| d) | Available Transfer Capability (ATC) means | the transfer capability of the inter-control area transmission system available for scheduling commercial transactions (through long term access, medium term open access and short term open access) in a specific direction, taking into account the network security. Mathematically ATC is the Total Transfer Capability less Transmission Reliability Margin; |
| e) | Beneficiary means | a person who has a share in an ISGS |
| f) | Bilateral Transaction means | a transaction for exchange of energy (MWh) between a specified buyer and a specified seller, directly or through a trading licensee or discovered at Power Exchange through anonymous bidding, from a specified point of injection to a specified point of drawal for a fixed or varying quantum of power (MW) for any time period during a month; |
| g) | Black Start Procedure means | the procedure necessary to recover from a partial or a total blackout in the region; |
| h) | BIS means | the Bureau of Indian Standards; |
| i) | Bulk Consumer means | any Consumer who avails supply at voltage of 33 kV or above; |
| j) | Capacitor means | an electrical facility provided for generation of reactive power; |
| k) | Central Generating Station means | the generating stations owned by the companies owned or controlled by the Central Government; |
| l) | Central Transmission Utility (CTU) means | any Government company, which the Central Government may notify under sub-section (1) of Section 38 of the Act; |
| m) | Collective Transaction means | a set of transactions discovered in power exchange through anonymous, simultaneous competitive bidding by buyers and sellers; |
| n) | Congestion means | a situation where the demand for transmission capacity exceeds the Available Transfer Capability; |
| o) | Connection Agreement means | an Agreement between CTU, inter-state transmission licensee other than CTU (if any) and any person setting out the terms relating to a connection to and/or use of the Inter State Transmission System; |
| p) | Connection Point means | a point at which a Plant and/ or Apparatus connects to the Transmission /Distribution System; |
| q) | Connectivity means | the state of getting connected to the inter-State transmission system by a generating station, including a captive generating plant, a bulk consumer or an inter-State transmission licensee; |
| r) | Control Area means | an electrical system bounded by interconnections (tie lines), metering and telemetry which controls its generation and/or load to maintain its interchange schedule with other control areas whenever required to do so and contributes to frequency regulation of the synchronously operating system; |
| s) | Demand means | the demand of Active Power in MW and Reactive Power in MVAr of electricity unless otherwise specified; |
| t) | Demand response means | reduction in electricity usage by end customers from their normal consumption pattern, manually or automatically, in response to high UI charges being incurred by the State due to overdrawal by the State at low frequency, or in response to congestion charges being incurred by the State for creating transmission congestion, or for alleviating a system contingency, for which such consumers could be given a financial incentive or lower tariff; |
| u) | Despatch Schedule means | the ex-power plant net MW and MWh output of a generating station, scheduled to be exported to the Grid from time to time; |
| v) | Disturbance Recorder (DR) means | a device provided to record the behaviour of the pre-selected digital and analog values of the system parameters during an Event; |
| w) | Data Acquisition System (DAS) means | a system provided to record the sequence of operation in time, of the relays/equipments as well as the measurement of pre-selected system parameters; |
| x) | Drawal Schedule means | the summation of the station-wise ex-power plant drawal schedules from all ISGS and drawal from/injection to regional grid consequent to other long term access, medium term and short term open access transactions; |
| y) | DVC means | the Damodar Valley Corporation established under sub-section (1) of Section 3 of the Damodar Valley Corporation Act, 1948; |
| z) | Entitlement means | a Share of a beneficiary (in MW / MWh) in the installed capacity/output capability of an ISGS; |
| aa) | Event means | an unscheduled or unplanned occurrence on a Grid including faults, incidents and breakdowns; |
| bb) | Event Logging Facilities means | a device provided to record the chronological sequence of operations, of the relays and other equipment; |
| cc) | Ex-Power Plant means | net MW/MWh output of a generating station, after deducting auxiliary consumption and transformation losses; |
| dd) | Fault Locator (FL) means | a device provided at the end of a transmission line to measure/ indicate the distance at which a line fault may have occurred; |
| ee) | Flexible Alternating Current Transmission System(FACTS) means | a power electronics based system and other static equipment that provide control of one or more AC transmission system parameters to enhance controllability and increase power transfer capability; |
| ff) | Force Majeure means | any event which is beyond the control of the persons involved which they could not foresee or with a reasonable amount of diligence could not have foreseen or which could not be prevented and which substantially affects the performance by person such being the following including but not limited to:- |
| a) Acts of God, natural phenomena, floods, droughts, earthquakes and epidemics; b) Enemy acts of any Government domestic or foreign, war declared or undeclared, hostilities, priorities, quarantines, embargoes; c) Riot or Civil Commotion; d) Grid’s failure not attributable to the person. | ||
| gg) | Forced Outage means | an outage of a Generating Unit or a transmission facility due to a fault or other reasons which has not been planned; |
| hh) | Generating Company means | any company or body corporate or association or body of individuals, whether incorporated or not, or artificial juridical person, which owns or operates or maintains a generating station. |
| ii) | Generating Unit means | an electrical Generating Unit coupled to a turbine within a Power Station together with all Plant and Apparatus at that Power Station which relates exclusively to the operation of that turbo-generator; |
| jj) | Good Utility Practices means | any of the practices, methods and acts engaged in or approved by a significant portion of the electric utility industry during the relevant time period which could have been expected to accomplish the desired results at a reasonable cost consistent with good business practices, reliably, safely and with expedition; |
| kk) | Governor Droop means | in relation to the operation of the governor of a Generating Unit, the percentage drop in system frequency which would cause the Generating Unit under restricted/free governor action to change its output from zero to full load; |
| ll) | Grid Standards means | the standards specified by the Authority under clause (d) of the Section 73 of the Act; |
| mm) | Extra High Voltage (EHV) means | where the voltage exceeds 33,000 volts under normal conditions, subject, however, to the percentage variation allowed by the Authority; |
| nn) | Independent Power Producer (IPP) means | a generating company not owned/ controlled by the Central/State Government; |
| oo) | Indian Electricity Grid Code (IEGC) or Grid Code means | these regulations specifying the philosophy and the responsibilities for planning and operation of Indian power system; |
| pp) | Inter-State Generating Station (ISGS) means | a Central generating station or other generating station, in which two or more states have Shares; |
| qq) | Inter State Transmission System (ISTS) means | i) Any system for the conveyance of electricity by means of a main transmission line from the territory of one State to another State ii) The conveyance of electricity across the territory of an intervening State as well as conveyance within the State which is incidental to such inter-state transmission of energy (iii) The transmission of electricity within the |
| rr) | Licensee means | a person who has been granted a license under Section 14 of the Act; |
| ss) | Load means | the MW/MWh /MVAR/MVARh consumed by a utility/ installation; |
| tt) | Long –term Access means | the right to use the inter-State transmission system for a period exceeding 12 years but not exceeding 25 years; |
| uu) |
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