A Solution for Stability Improvement through Compressed Air Energy Storage as Reactive Power Compensating Device under Various Grid Faults

Grid stability can be improved by implementing various energy storage devices in the power system and among them one of the storage system is compressed air energy storage system (CAES). This CAES can be used for management of variation in the renewable energy and grid demand. The only drawback with CAES is that its cost is high compared with other storage technologies. The research is under development to operate CAES in an most efficient and economic way with maximum utilization of energy stored with least thermal losses. In this paper CAES is used for meeting the reactive power for the wind farm when it is subjected to fault at different bus locations. Here an doubly fed induction generator(DFIG) based wind turine(WT) with CAES performance shows better than static var compensator(SVC). This shows that CAES can be used as reactive power source for improving the system performance in the case of stability.