考虑调频响应特性的电池储能系统双层多目标优化策略OA

In view of the problems such as fast frequency modulation response speed,difference in frequency modu-lation cost of different types of BESS(Battery Energy Storage System)and unbalance of unit SOC(State of Charge)in the frequency modulation process of battery energy storage systems,a two-layer multi-objective optimization strategy of battery energy storage system considering the frequency modulation response characteristics is proposed in this study,which in-cludes the frequency modulation instruction decomposition layer and the frequency modulation instruction optimization layer of battery energy storage system.According to the frequency modulation response characteristics of the battery energy stor-age system,the battery energy storage system with fast response speed is involved in the adjustment of the high frequency signal of the frequency modulation command signal.The frequency modulation economy and SOC balance of battery energy storage system are considered comprehensively in the frequency modulation command optimization layer of battery energy storage system,and the resistance coefficient related to the remaining frequency modulation capacity of battery energy stor-age system is introduced.The multi-objective optimization model of the battery energy storage system is established to solve the optimal output of the battery energy storage system.By comparing the frequency modulation net profit and SOC standard deviation change curves of each battery energy storage system under the proposed strategy and the dynamic propor-tional distribution strategy,it is shown that the proposed strategy can effectively increase the frequency modulation net prof-it of the battery energy storage system participating in frequency modulation,and improve the SOC balance of the battery energy storage system participating in frequency modulation.