Tariff Regulations
Centre
The CERC has issued the Terms and Conditions of Tariff regulations,2019 which has come into force from 1 April 2019 and will remain valid till 31st March 2024 i.e., for a period of five years. The primary purpose of these regulations is to determine the tariff of transmission projects having a COD on or after 1st April 2019.
Draft Indian Electricity Grid Code Regulations, 2022
Resolution by
CERC
Notification No. and date
L-1/265/2022/CERC dated 7 June 2022
Objective
1. To provides the roles, functions and reponsibilities of the concerned statutory bodies, generating companies, licensees and any other person connected with the operation of the power systems within the statutory frameworks.
2. To provide extensive provisions pertaining to reliability and adequacy of resources, technical and design criteria for connectivity to the grid, protection setting and performance monitoring of the protection systems, operational requirements and technical capabilities for secure and reliable grid operation, power system operations, integration of renewables, ancillary services and reserves and cyber security etc.
2. To provide extensive provisions pertaining to reliability and adequacy of resources, technical and design criteria for connectivity to the grid, protection setting and performance monitoring of the protection systems, operational requirements and technical capabilities for secure and reliable grid operation, power system operations, integration of renewables, ancillary services and reserves and cyber security etc.
Regulations called as
Central Electricity Regulatory Commission (Indian Electricity Grid Code) Regulations, 2022.
Effective from
To be Notified
Resource Planning Code
It covers the integrated resource planning including demand forecasting, generation resource adequacy planning and transmission resource adequacy assessment, required for secure grid operation
Demand Forecasting
a) Each distribution licensee within a State shall estimate the demand in its control area for the next five (5) years.
b) It includes the demand of open access consumers and factoring in captive generating plants, energy efficiency measures, distributed generation, demand response etc.
c) Further, these demand estimation shall be done using trend method, time series, econometric methods or any state of the art methods and shall include daily load curve (hourly basis) for a typical day of each month and submit the same to STU
c) STU shall estimate the demand for the entire State duly considering the diversity for the next five (5) years
b) It includes the demand of open access consumers and factoring in captive generating plants, energy efficiency measures, distributed generation, demand response etc.
c) Further, these demand estimation shall be done using trend method, time series, econometric methods or any state of the art methods and shall include daily load curve (hourly basis) for a typical day of each month and submit the same to STU
c) STU shall estimate the demand for the entire State duly considering the diversity for the next five (5) years
Generation Resource adequacy
1. After the demand estimation each distribution licensee shall assess the existing generation resources and identify the additional generation resource requirement
2. Assessment of the such existing generation resources shall be done with due regard to their capacity contribution to meet the peak demand.
3. Further, distribution licensee shall prepare generation resource procurement plan in different time horizons to ensure adequacy of generation resources and planning reserve margin (PRM).
3. To ensure optimum and least cost generation resource procurement planning each STU on behalf of the distribution licensees in the State shall provide the details to NLDC regarding demand forecasting, assessment of existing generation resources for carrying out a national level simulation for generation resource adequacy for States.
4. Based on the information received, the NLDC shall carry out a simulation to assist the States in drawing their optimal generation resource adequacy plan.
5. After considering the demand forecasting and the generation resource procurement planning, each distribution licensee shall ensure demonstrable generation resource adequacy as specified by the respective SERC for the next five (5) years
2. Assessment of the such existing generation resources shall be done with due regard to their capacity contribution to meet the peak demand.
3. Further, distribution licensee shall prepare generation resource procurement plan in different time horizons to ensure adequacy of generation resources and planning reserve margin (PRM).
3. To ensure optimum and least cost generation resource procurement planning each STU on behalf of the distribution licensees in the State shall provide the details to NLDC regarding demand forecasting, assessment of existing generation resources for carrying out a national level simulation for generation resource adequacy for States.
4. Based on the information received, the NLDC shall carry out a simulation to assist the States in drawing their optimal generation resource adequacy plan.
5. After considering the demand forecasting and the generation resource procurement planning, each distribution licensee shall ensure demonstrable generation resource adequacy as specified by the respective SERC for the next five (5) years
Transmission Resource planning
Transmission resource adequacy assessment:
(a) CTU shall undertake assessment and planning of ISTS network for adequate power transfer capability across each flow-gate, import and export capability for each control area and cross-border import-export capability
b) STU shall undertake assessment and planning of theInSTS network for import and export capability across ISTS and STU interface and adequate power transfer capability across each flow-gate.
(a) CTU shall undertake assessment and planning of ISTS network for adequate power transfer capability across each flow-gate, import and export capability for each control area and cross-border import-export capability
b) STU shall undertake assessment and planning of theInSTS network for import and export capability across ISTS and STU interface and adequate power transfer capability across each flow-gate.
Connection Code
This chapter covers the technical and design criteria for connectivity, procedure and requirements for physical connection and integration of grid elements.
Procedure for Connection
1. The grant of connectivity to the ISTS by the CTU shall be governed by the GNA Regulations.
2. NLDC, in coordination with RPCs and RLDCs after due consultation of stakeholders, shall publish a detailed procedure.
3. The procedure shall specify requirements for integration with the grid such as protection, telemetry and communication systems, metering, statutory clearances and modelling data requirements for system studies.
4. Post completion of all physical arrangements of connectivity and necessary site tests, the concerned user shall request the RLDC for permission of first energization in the specified format.
(4) Further, SLDC shall prepare procedure for first time energization of new or modified power
system elements to InSTS network.
2. NLDC, in coordination with RPCs and RLDCs after due consultation of stakeholders, shall publish a detailed procedure.
3. The procedure shall specify requirements for integration with the grid such as protection, telemetry and communication systems, metering, statutory clearances and modelling data requirements for system studies.
4. Post completion of all physical arrangements of connectivity and necessary site tests, the concerned user shall request the RLDC for permission of first energization in the specified format.
(4) Further, SLDC shall prepare procedure for first time energization of new or modified power
system elements to InSTS network.
Connectivity Agreement
1. In case of users seeking connectivity to the ISTS under GNA Regulations, Connectivity Agreement shall be signed between such users and the CTU.
2. In case of an inter-State transmission licensee, Connectivity Agreement shall be signed
between such licensee and CTU after the award of the project and before physical connection to ISTS.
2. In case of an inter-State transmission licensee, Connectivity Agreement shall be signed
between such licensee and CTU after the award of the project and before physical connection to ISTS.
Technical Requirement
1. NLDC or RLDC, in consultation with CTU shall carry out a joint system study six (6) months before the expected date of first energization of a new power system element to identify operational constraints
2. The connectivity grantee, transmission licensee and SLDC/STU shall furnish all technical data including that of its embedded generators and other elements to the CTU and NLDC or RLDC for necessary technical studies.
3. Similar exercise shall be done by SLDC in consultation with STU for the InSTS, and specifically for elements of 220 kV and above (132 kV and above in case of North Eastern region).
2. The connectivity grantee, transmission licensee and SLDC/STU shall furnish all technical data including that of its embedded generators and other elements to the CTU and NLDC or RLDC for necessary technical studies.
3. Similar exercise shall be done by SLDC in consultation with STU for the InSTS, and specifically for elements of 220 kV and above (132 kV and above in case of North Eastern region).
Data and Communication facilities
1. Reliable speech and data communication systems shall be provided to facilitate necessary communication, data exchange, supervision and control of the grid by the NLDC, RLDC and SLDC.
2. The associated communication system to facilitate data flow up to appropriate data collection point on CTU system including inter-operability requirements shall be established by the concerned user as specified by CTU in the Connectivity Agreement.
3. All users, STU and participating entities in case of cross-border trade shall provide, in coordination with CTU, the required facilities at their respective ends as specified in the connectivity agreement.
4. The communication system along with data links provided for speech and real time data communication shall be monitored in real time by all users, CTU, STU, SLDC and RLDC to ensure high reliability of the communication links.
2. The associated communication system to facilitate data flow up to appropriate data collection point on CTU system including inter-operability requirements shall be established by the concerned user as specified by CTU in the Connectivity Agreement.
3. All users, STU and participating entities in case of cross-border trade shall provide, in coordination with CTU, the required facilities at their respective ends as specified in the connectivity agreement.
4. The communication system along with data links provided for speech and real time data communication shall be monitored in real time by all users, CTU, STU, SLDC and RLDC to ensure high reliability of the communication links.