不同负荷渗透率下的快充电站功率补偿设备配置优化策略

Optimizing Allocation Strategy of Power Compensation Equipment in Fast Charging Stations Under Different Load Permeability

随着电动汽车数量增加,快充电站的负荷渗透率逐渐提高,如何降低快充电站对配电网电能质量的污染并实现经济稳定运行,成为配电网研究的重点。基于此,根据快充电站的负荷渗透率,将电动汽车行业的不同发展阶段划分为不同充电场景,分析不同场景下的负荷特性;然后建立储能系统(energy storage system,ESS)和静止无功发生器(static var generator,SVG)的全周期成本模型,提出不同负荷渗透率场景下快充电站的ESS和SVG协同配置优化策略,并通过上层容量优化和下层运行优化的双层模型进行求解;最后,以IEEE-33节点配电网系统为研究对象,针对不同负荷渗透率场景进行仿真,验证了所提策略的经济性和有效性。

With the increase of electric vehicles(EVs),load permeability of the fast charging stations gradually increases.How to reduce the pollution of the fast charging station to power quality of the distribution network and realize its economic and stable operation has become the research focus of distribution network side.Therefore,this paper divides different development stages of EV industry into different charging scenarios according to load permeability of the fast charging station,and analyzes load characteristics in different scenarios.Then it establishes the whole life cycle cost models of the energy storage system(ESS)and(static var generator,SVG),proposes an optimization strategy of collaborative configuration of ESS and SVG in fast charging stations under different scenarios which is solved by the two-layer model with capacity optimization of the upper model and operation optimization of the lower model.Finally,taking the IEEE-33 node distribution network system as the object,the paper carries out the simulation of different load permeability scenarios to verify the economy and effectiveness of the proposed strategy.