Dynamic Operation Strategy of Battery Energy Storage System Considering Energy Arbitrage and Frequency regulation

Abstract

With the rapid development of battery energy storage systems (BESS) in power system, the multifunctional application of BESS in the energy arbitrage and frequency regulation is regarded as an effective way in improving the economic benefits. However, current operation strategy for BESS cannot fully considered the time-varying demand of energy arbitrage and the randomness of frequency regulation. Thus, this paper proposes a dynamic operation strategy (DOS) by considering the randomness of frequency regulation, and the results of the DOS consist of two core parameters as arbitrage power and droop coefficient. At last, the promising results shown that the BESS DOS can adjust the dispatch priority of BESS resource according to demand of the energy arbitrage, and enable BESS continuously track the frequency deviation signals.