基于电动汽车能效电厂的系统频率控制策略  

System Frequency Control Strategy Based on Efficient Power Plant of Electric Vehicles

作　　者：李承霖 周宇 胥峥 穆云飞[1] 贾宏杰[1] 魏炜[1] LI Chenglin;ZHOU Yu;XU Zheng;MU Yunfei;JIA Hongjie;WEI Wei(Key Laboratory of Smart Grid of Ministry of Education,Tianjin University,Tianjin 300072,China;Yancheng Power Supply Company,State Grid Jiangsu Electric Power Co.,Ltd,Yancheng 224005,China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津300072 [2]国网江苏省电力有限公司盐城供电分公司,盐城224005

出　　处：《电力系统及其自动化学报》2019年第11期68-74,共7页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(U1766210);国家电网有限公司科技资助项目“能源互联网环境下的多源互联配电网及多样化用电方式的需求策略系统研究”;天津市科技计划资助项目(18YFZCGX00570)

摘　　要：随着可再生能源大量接入电网,其间歇性不稳定的出力特征对电网频率稳定提出了严峻挑战。电动汽车作为可控负荷,能够组成需求侧能效电厂参与系统辅助服务,为电网提供频率调节服务。为此,提出了一种基于电动汽车能效电厂的系统频率控制策略。首先,构建了单体电动汽车的可控域,用于判断汽车能否参与频率控制;其次,定义状态标识SOB(state of battery)来描述电动汽车的响应容量;最后,提出了基于SOB排序的频率控制策略。仿真结果表明,所提出的控制策略能够有效抑制风电出力造成的电网频率波动,同时满足电动汽车用户的交通出行需求。Along with the integration of a large quantity of renewable energies into power grid,their intermittent and un?stable output characteristics pose a severe challenge to the stability of grid frequency.As controllable load,electric ve?hicles(EVs)can be grouped into an efficient power plant to participate in the ancillary services,providing the frequen?cy regulation service to power grid.From this perspective,a system frequency control strategy based on the efficient power plant of EVs is proposed.Firstly,the controllable area of one single EV is constructed to determine whether the EV can participate in the frequency control.Secondly,a state index,i.e.,state of battery(SOB),is defined to de?scribe the EV’s response capacity.Finally,a frequency control strategy based on the sorting results of SOB is proposed.Simulation results show that the proposed control strategy can effectively suppress fluctuations of grid frequency caused by wind power output while satisfying the EV users’travelling demand.

关 键 词：电动汽车 可再生能源 能效电厂 频率控制 

分 类 号：TM73[电气工程—电力系统及自动化]