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开放电力市场环境下,以配电网公司的净收益最大为目标,建立了考虑运行策略及投资主体利益的电池储能系统(battery energy storage system,BESS)优化配置模型。配电网公司的净收益由在大量用户自建分布式电源的主动配电网中投资建设BESS的经济效益以及计入考虑循环寿命的BESS全寿命周期成本决定。其中,经济收益分为正常状态下的收益和系统故障过程的收益。同时通过设定追踪价格的上下限和最小的电池荷电状态,提出一种新的确定BESS运行策略的方法。优选智能单粒子群算法对该模型进行求解。以改进IEEE-33节点配电系统为例进行仿真验证,结果表明与固定的BESS运行策略相比,采用所提策略可获得更优的经济性,DG的类型与渗透率的大小对BESS的最优配置结果及经济收益有较大影响。
Under the open electricity market environment, the optimal allocation model of battery energy storage system (BESS) considering the operation strategy and the interests of investors is established with the goal of maximizing net income of distribution network companies. The net income of a distribution network company is determined by the economic benefits of investing in the construction of a BESS in an active distribution network with a large number of users’ self-built distributed generation and the full life-cycle cost of a BESS taking into account the cycle life. Among them, the economic benefits are divided into the normal state of the proceeds and the proceeds of the system failure process. At the same time, by setting the upper and lower limits of the tracking price and the minimum battery state of charge, a new method of determining the operation strategy of BESS is proposed. This model is solved by intelligent single-particle swarm optimization algorithm. The simulation results show that, compared with the fixed BESS operation strategy, the proposed strategy can achieve better economy, and the type and permeability of DG are the most important for BESS Excellent configuration results and economic benefits have a greater impact.