考虑车网互动的配电网可靠性评估  

Distribution Network Reliability Assessment Considering V2G

作　　者：黄俊辉 周昊[2] 韩俊 李琥 归三荣 王哲 朱林伟[2] 刘洪[2] HUANG Junhui ZHOU Hao HAN Jun LI Hu GUI Sanrong WANG Zhe ZHU Linwei LIU Hong(State Grid Jiangsu Economic Research Institute, Nanjing 210008, China Key Laboratory of Smart Grid of Ministry of Education （Tianjin University） , Tianjin 300072,)

机构地区：[1]国网江苏省电力公司经济技术研究院,南京市210008 [2]智能电网教育部重点实验室(天津大学),天津市300072

出　　处：《电力建设》2017年第2期77-83,共7页Electric Power Construction

基　　金：国家自然科学基金项目(51477116);江苏省电力公司科技项目(J2015040)~~

摘　　要：作为一种兼具移动储能特性的新型负荷,电动汽车的大规模接入将会对配电网可靠性产生影响。在传统配电网可靠性评估方法的基础上,提出一种考虑车网互动的配电网可靠性评估方法。首先,通过分析电动汽车的出行行为,建立了电动汽车充放电的时空分布模型;其次,利用蒙特卡洛法模拟配电网故障,充分考虑电动汽车的出行需求,得到配电网故障时电动汽车的放电容量和失负荷情况;然后,结合分布式电源的出力,建立孤岛启发式负荷削减模型求取配电网的故障影响结果;最后,通过改造的IEEE-RBTS Bus-6测试系统验证本方法的可靠性与实用性,分别研究电动汽车渗透率、充电模式以及电动汽车电池容量对配电网可靠性的影响。As a kind of new load and mobile energy storage, electric vehicles （EVs） are integrated into the distribution system in a large scale, which has a great impact on the reliability of distribution network. On the basis of traditional reliability assessment of distribution network, this paper proposes a method of reliability assessment for distribution network considering vehicle-to-grid（V2G）. Firstly, through the analysis on the travel behavior of EVs, we constructed the temporal and spatial distribution model of EV charging and discharging. Secondly, we adopted the Monte-Carlo method to simulate the distribution network fault, and obtained the discharging capacity and loss load of EVs under distribution network fault with fully considering travel demand of EVs. Then, a heuristic load curtailment model in islanded mode was established to obtain the fault effect results of distribution network. Finally, the reliability and practicability of the proposed method were validated through modified IEEE-RBTS Bus-6 test system, and the impacts of EV＇s penetration, charging mode and battery capacity were studied on the reliability of distribution network,respectively.

关 键 词：可靠性 电动汽车 电动汽车与电网互动(V2G) 分布式电源 可平移负荷 负荷削减 

分 类 号：TM72[电气工程—电力系统及自动化]