含电动汽车快速充电站配电网的暂态电能质量特性研究  

Study on transient power quality characteristics of distribution network with EV quick charging stations

作　　者：王红标 粟时平[1] 胡亚杰 欧阳振宇 WANG Hongbiao;SU Shiping;HU Yajie;OUYANG Zhenyu(School of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410114

出　　处：《电测与仪表》2024年第6期159-166,共8页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51708194);湖南省教育厅科学研究重点项目(18A120)。

摘　　要：规模化电动汽车作为间歇性、冲击性负荷接入配电网,会对含电动汽车快速充电站配电网的暂态电能质量产生直接影响。论文主要对规模化电动汽车接入配电网产生的电压暂降、电磁暂态等暂态电能质量问题进行分析。首先对含电动汽车快速充电站的配电网进行建模,其次建立了基于变压器模型的电压暂降模型和基于分布参数等效模型的电磁暂态分析模型。理论分析了快速充电站接入配电网产生暂态电能质量问题,模型能够提高暂态仿真速度及准确性。通过仿真分析验证了快速充电站在正常投切和发生故障时产生的暂态电能质量问题。Large-scale electric vehicles,as intermittent and impact loads,are connected to the distribution network,which will have a direct impact on the transient power quality of the distribution network with quick charging stations of electric vehicles.This paper mainly analyzes the transient power quality problems such as voltage sag and electromagnetic transient caused by large-scale electric vehicles connected to the distribution network.Firstly,the distribution network with EV quick charging stations is modeled.Secondly,the voltage sag model based on the transformer model and the electromagnetic transient analysis model based on the distributed parameter equivalent model are established.The transient power quality problem caused by the connection of quick charging station to distribution network is analyzed theoretically.The model can improve the speed and accuracy of transient simulation.The transient power quality problems in the normal switching and fault of the quick charging station are verified by simulation analysis.

关 键 词：快速充电站 配电网 电压暂降 电磁暂态 分布参数 等效模型 

分 类 号：TM933[电气工程—电力电子与电力传动]