电动汽车接入充电对配电网电压波动的影响分析  

Analysis of the Influence of Electric Vehicle Charging on the Voltage Fluctuation of Distribution Network

作　　者：陈建军 Chen Jianjun(Chongqing Banan Vocational Education Center,Chongqing 401320)

机构地区：[1]重庆市巴南职业教育中心,重庆401320

出　　处：《现代科学仪器》2020年第5期130-134,共5页Modern Scientific Instruments

摘　　要：本文研究某居民区950个停车位按照每位一桩的智能电网布局模式下配置充电桩后,对电源和电压管理的理论影响和电压控制系统升级模式。经过分析,如不加以有效控制,当前状态下充电桩系统对400V用电母线带来的升压效应可带来系统电压15.4V的升压,与用电网络内其他无功功率发生设备相配合,系统电压可能提升到418.2V,已经超出了系统容忍度。远期充电桩带来的升压效应更加显著。本文采用对每个充电桩配置单独的固定容量三段式自动投切无功补偿设备的解决方案解决该升压问题。In this paper,950 parking spaces in a residential area are configured with charging piles according to the smart grid layout mode of each pile,and the theoretical impact on power supply and voltage management and voltage control system upgrading mode are studied.After analysis,if it is not effectively controlled,the boost effect of the charging pile system on the 400V power bus in the current state can bring 15.4V boost to the system voltage.In combination with other reactive power generating equipment in the power network,the system voltage may rise to 418.2V,which has exceeded the system tolerance.In the long term,the boost effect of charging pile is more significant.In this paper,each charging point is equipped with a separate fixed capacity three-stage automatic switching reactive power compensation equipment to solve the problem of voltage rise.

关 键 词：充电桩 无功功率 升压效应 电压波动 控制策略 

分 类 号：TM7[电气工程—电力系统及自动化]