Experience of Dynamic Performance Assessment of Hybrid Inverter Based Resources in India

Hybrid renewable projects which include a mix of wind, solar and/or energy storage are being developed in order to provide procuring utilities with higher load factors and also some measure of dispatchability. Resource developers in India submit grid interconnection requests to Central Transmission Utility which assesses the compliance of the new resource to the prescribed standards through various simulation studies. The paper analyses the dynamic performance of one such hybrid renewable power plant and compares it with the performance of a standalone wind plant, based on the simulation studies carried out on the models submitted by plant developers at pre-connection stage. The key points of difference in terms of the dynamic performance of the plants observed from the simulations have been discussed. It is observed that the hybrid plant provides better dynamic performance as well as better controllability than the standalone wind plant owing to installation of higher inverter capacity