【摘要】 为光伏电站配置适当容量的储能系统,可有效提高光伏发电的电能质量和经济效益。以电池–超级电容器混合储能系统为基础,采用雨流计算法计算电池放电深度,根据等效循环寿命曲线建立电池的使用寿命量化模型;通过分析储能系统的成本结构,建立以储能系统年均最小成本为目标函数,同时考虑波动率、置信度等约束条件的容量优化配置模型,利用粒子群算法对模型进行寻优。仿真实例验证了所提方法的有效性,采用混合储能系统替代单类型电池储能系统可以大幅降低运行成本,提高光储系统的经济性。更多还原

【Abstract】 Incorporating energy storage system properly into the photovoltaic plant can improve the power quality and economic benefits effectively. Taking battery-supercapacitor hybrid energy storage system as an example, the paper calculated the depth of battery using the rain-flow-counting method, and established battery life quantitative model according to the equivalent cycle life curve. By analyzing the cost structure of the energy storage system, the paper established capacity allocation model using the minimum annual cost as objective, fluctuation rate and confidence as constraints. Simulation calculation used the particle swarm algorithm, and the results show the validity of the method. The simulation results also show that hybrid energy storage system can greatly reduce the operating costs and improve the economy of PV-energy storage system compared with a single type of battery energy storage system.更多还原