快充电站多类型应用方式的并网影响及控制技术综述

A Review of Grid-Connection Impact and Control Technology of FCS Multi-type Application Modes

随着能源互联网建设的加快推进,电动汽车等移动式负荷的渗透率将逐渐上升,同时快充电站也将趋于规模化运营。复杂的网络结构和多主体调控方式大幅增加了电网的控制难度和失稳风险。通过调研国内外对快充电站并网影响因素及涉网性能的研究现状,重点分析规模化快充电站运行对电网3个主要方面的挑战;针对能源互联网中“快充电站+储能+其他元素”的新型快充电站应用方式,以充储/光储充一体化电站为范例,分析该领域现有的研究进展和工程经验,并对比分析充储/光储充一体化电站与规模化含储能快充电站的异同;最后,从应用前景和关键技术两个层面出发,探讨含储能快充电站未来的发展路径。

With the rapid construction of the energy internet,there will be increasing penetration of such mobile loads as electric vehicles,and fast charging stations(FCS)will operate in large-scale.As a result,the power grid is facing increasing controlling difficulties and instability risks because of its complex network structure and multi-agent regulation modes.Based on an investigation of the recent researches both at home and abroad on the influence factors of FCS grid-connection and the performance of involved grids,we focus on analyzing the three main challenges of large-scaled FCS to the grid.In addition,according to the novel application modes of"FCS+energy storage system(ESS)+other elements"in the energy internet,we also analyze the existing research progress and engineering experience in this field through a case study of integrated PV-storage-charging stations,and make a comparison of the similarities and differences between the large-scaled FCS and the integrated charging-storage/PV-storage-charging stations.Finally,from the perspectives of application prospect and key technologies,the future development of FCS with ESS is discussed.