Rajasthan State has the highest potential for RES (~ 148 GW) in the country. Thus, Rajasthan gets high RES capacity addition targets as per various Government Schemes. As per the 175 GW by 2022 target set by Central Govt., Rajasthan is expected to have a cumulative capacity of ~ 14.5 GW as compared to present capacity of ~6.5 GW (2017). A major part of this RES generation in the State is expected to be exported outside from the State as the demand within the State is lower.
With higher RES capacity in its generation mix, the State operator face difficulties in managing the grid due to intermittent nature of RES generation and mismatch between the State’s demand and RES generation patterns.
RVPN through ADB commissioned Complete System Studies of Transmission Network of the State Network to: i) review of the existing State transmission system: i) transmission capacity addition requirement for evacuation of RES capacity in mid and long-term; and iii) assess the reactive compensation requirement in the existing and future state grid
Mercados EMI successfully completed the following studies under the project:
Improvement of Available PSS/E model & Accuracy Tuning
- Developing of PSS/E simulation model of the existing transmission grid incorporating i)all the substations up to 132 kV level shall be represented including of all the 132 kV transformers; ii)reactive elements up to 33 kV buses; iii)all the State/ private Generators, CTU/ Private Transmission Operators connected to RVPNL transmission system.
- Validation and fine tuning of the simulated model based on various test cases and actual system data (maximum, average instant etc.).
- Load flow study of the tuned simulated model with various test cases i.e. seasonal variation in demand, day/ night and seasonal variation of renewable energy, various loading conditions etc. to identify the bottlenecks/ constraints of the existing and planned grid. The over-capacity/ under-capacity of the transmission grid for each region/ segment vis-à-vis the actual demand and injection etc. be identified for the existing and planned system.
Existing Power Transmission Grid Review
- Preparation of test cases for simulation considering the various demand/ supply situation taking into account seasonal, day/ night and other factors.
- The simulation of various prepared test cases to ascertain the sizing/ adequacy of existing & already planned (sanctioned) system, its bottlenecks/constraints/ congestions and requirements for optimum/ efficient operations.
- Variance analysis of the assumptions/ parameters considered for projected/ forecasted transmission system in last 10 years vis-à-vis actual/ measured/ achieved parameters.
- Study of the co-related regional, socio- economic, geographic and other national/ state policy factors with that of above variance in parameters.
Transmission Master Plan for Medium and Long Term
- Study of region and segment-wise load/ demand growth, generations including renewable, other socio-economic factors, forecasts, transmission grid expansion plans by CTU in state of Rajasthan and interstate incidental to Rajasthan, CEA guidelines, national/ state policy frameworks/ growth projection guidelines etc, for making prospective transmission network requirements for medium and long term.
- Preparation of simulation models for the prospective scenarios in Medium Term and Long terms.
- Perform scenario/ sensitivity analysis on simulation model (s) for various time frames for requirements of various transmission elements.
- Analysis and suggesting of least cost alternative for meeting the future load/ demand growths in various regions.
- Developing medium term (upto 2022) and long term (upto 2027) transmission plan ensuring adequacy, reliability and efficient operation of the existing transmission grid with deployment requirements of various transmission elements including reactive compensation devices such as STATCOMS, bus reactors etc.