Study on Operation Strategy of PV-Battery System Providing Frequency Regulation Based on Chance Constraint

Abstract

This paper proposes an optimal operation strategy for a system composed of Battery Energy Storage Systems(BESSs) and Photovoltaic system(PV). The integrated system is defined as deliver the photovoltaic power and to simultaneously provide frequency regulation ancillary service(FRAS) to the main grid. This paper describes frequency regulation ancillary service market rules for PV-BESS and proposes a prediction method of the frequency regulation capacity of PV-BESS participating in FRAS based on chance constraint. Then, optimal operation strategy of PV-BESS system is calculated considering the frequency regulation performance and economy index as multi-objective optimization objectives, The proposed strategy can decrease the uncertainty risk of PV-BESS participating in the energy market and FRAS market, and improve the economic benefits and FR performance.