考虑负荷优化的光储充电站储能经济性配置研究

为缓解电动汽车充电对电网的冲击,提升充电站的经济性,对光储一体化充电站储能配置展开研究. 首先分析了充电站电动汽车的负荷特性,结合峰谷电价,制定了储能运行策略. 然后通过建立储能配置双层规划模型,保证了充电站负荷最大程度优化的同时实现价格套利. 最后通过算例分析,得到商业区充电站储能经济性配置方案. 将该配置方案与以峰谷差作为优化指标的传统储能配置方案对比,结果表明该方案有效增加了总削峰量,并将充电站年购电成本进一步降低.

Research on Energy Storage Economic Allocation of Photovoltaicand Energy-Storage Integrated Charging StationConsidering Load Optimization

In order to cushion the blows of electric vehicles charging on the power grid and improve the economy of charging station,the energy storage configuration of photovoltaic and energy-storage integrated charging station is studied. Firstly,this paper analyzes the load characteristics of electric vehicles in charging station,and the energy storage operation strategy is formulated on the basis of the peak valley electricity price. Then,a bi-level programming model of energy storage configuration is established to ensure the maximum optimization of charging station load and realize price arbitrage. Finally,through the analysis of an example,the energy storage economic configuration scheme of charging station in commercial district is obtained. Compared with the traditional energy storage configuration scheme with peak valley difference as the optimization index,the results show that the proposed scheme effectively increases the total peak load shifting amount and further reduces the annual power purchase cost of the charging station.