规模化电池储能系统的无功功率控制策略研究

摘要

无功功率补偿是电池储能系统并网运行时的重要应用.电池储能系统主要包括电池组、变流器以及设备监控系统等.电池储能用变流器可向电网提供无功功率.文章提出了规模化电池储能电站中各储能机组间的无功功率分配方法.采用仿真软件对电池储能系统的无功功率分配策略进行仿真分析,并基于张北储能试验基地的电池储能机组实例验证了控制策略的有效性.%Reactive power compensation is an important application for grid connected battery energy storage systems.The battery energy storage system mainly includes a battery pack,power converter system (PCS) and monitoring system.The PCS can provide reactive power to the grid.In this paper,a reactive power allocation method for the large-scale battery energy storage station has been proposed based on multiple paralleled battery energy storage systems.The proposed reactive power allocation strategy of BESS has been simulated and the effectiveness of the control strategy verified by experimental test based on BESS located at Zhangbei energy storage test base.