浙江电力

2020, v.39;No.286(02) 77-82

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多接入电动汽车充电桩对电网谐波的影响研究
Study on the Impact of Electric Vehicle Charging Pole with Multiple Access Points on Power Grid Harmonic

刘志凯,郑文悦,李海弘,刘华
LIU Zhikai,ZHENG Wenyue,LI Haihong,LIU Hua

摘要(Abstract):

因多台电动汽车充电桩并网时产生的谐波问题相较于单台要复杂得多,故建立多台电动汽车充电桩接入配电网仿真模型进行研究,分析多台充电桩与电网之间的交互影响,主要分析各次谐波电流幅值随充电桩台数增加的变化规律及考虑背景谐波后的变化规律。仿真结果表明:随着电动汽车充电桩台数的增加,单台充电桩输出的各次谐波电流幅值呈减小的趋势,接入点各次谐波电流幅值呈增加的趋势;背景谐波电压的存在使得电动汽车充电桩各次谐波发生更严重的畸变。最后通过仿真数据与实测数据的对比,验证了结论的正确性。
The harmonic caused by the access of multiple electric vehicles charging poles is more complicated than that of a single one. Therefore, the simulation models of multiple electric vehicles connected to the distribution network are built to analyze the interaction impact between the grid and the charging poles. The change law that harmonic current amplitude varied with the number of the charging poles and that taking background harmonics into account are analyzed. The simulation results show that the subharmonic current amplitude of a single charging pole decreases with the EV charging pole increase, and the subharmonic current amplitude at the connection point increases; the background harmonic voltage deteriorates the subharmonic distortion of EV charging poles. Finally, the comparison between simulation data and the measured data, the conclusion is proved to be correct.

关键词(KeyWords): 谐波;电动汽车充电桩;建模仿真;电能质量
harmonic;electric vehicle charging pole;modeling and simulation;power quality

Abstract:

Keywords:

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作者(Author): 刘志凯,郑文悦,李海弘,刘华
LIU Zhikai,ZHENG Wenyue,LI Haihong,LIU Hua

DOI: 10.19585/j.zjdl.202002012

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