35kV线路下交叉跨越10kV线路弧光放电分析  

Analysis of Arc Light Discharge on 35 kV Lines Crossing 10kV Lines

作　　者：王力 黄文辉 王军 贾远温 刘振笃 WANG Li;HUANG Wenhui;WANG Jun;JIA Yuanwen;LIU Zhendu(Tianshui Changcheng Switchgear Factory Group Co.,Ltd.,Tianshui 741024,Gansu,China;Gansu Great Wall Hydrogen Energy Engineering Research Institute,Tianshui 741024,Gansu,China;Lanzhou Resources and Environment Voc-Tech University,Lanzhou 730021,Gansu,China;Tianshui Power Supply Company of State Grid Gansu Electric Power Company,Tianshui 741000,Gansu,China)

机构地区：[1]天水长城开关厂集团有限公司,甘肃天水741024 [2]甘肃长城氢能源工程研究院,甘肃天水741024 [3]兰州资源环境职业技术大学,甘肃兰州730021 [4]国网天水供电公司,甘肃天水741000

出　　处：《电气传动自动化》2024年第3期58-61,共4页Electric Drive Automation

摘　　要：随着配电网线路数量的不断增多,高空线路交叉跨越布局不可避免,同时由于停电、供电流程复杂,通常采用不停电施工。该文研究35kV线路下交叉跨越10kV线路,35kV线路不停电,10kV线路施工作业时A、C相接近35kV线路发生一次弧光放电。在工频电压和操作过电压两种情况下建模仿真,得出流过人体的电流超过规范要求的安全电流,可能导致触电损伤或死亡。With the increasing number of distribution network lines,the layout of high-altitude line crossing is inevitable,due to power outages and complex power supply processes,we adopt uninterrupted construction usually.This paper studied an arc discharge when construction operation of phases A and C of 10kV line are close to the 35kV line,meanwhile,the cross crossing of a 10kV line under a 35kV line,with no power outage on the 35kV line.Modeling and simulation are conducted under the power frequency voltage and switching overvoltage,it is found that the current flowing through the human body exceeds the safety current required by regulations,which may lead to electric shock damage or death.

关 键 词：交叉跨越 弧光放电 工频过电压 操作过电压 

分 类 号：TM726[电气工程—电力系统及自动化] O461.22[理学—电子物理学]