架空输电线路故障定位技术研究  

Research on Fault Location Technology of Overhead Transmission Line

作　　者：陶军 付子峰 夏雄 熊磊 方思剑 TAO Jun;FU Zifeng;XIA Xiong;XIONG Lei;FANG Sijian(Maintenance Company,State Grid Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430050,China)

机构地区：[1]国网湖北省电力有限公司检修公司,湖北武汉430050

出　　处：《湖北电力》2020年第5期48-52,共5页Hubei Electric Power

摘　　要：由于架空输电线路输送距离长,运行环境受很多因素的影响,时常出现故障跳闸的现象,故障定位技术成为准确判断故障位置和原因的主要方式。由于线路长度、波头、波速处于变化之中,增加了故障定位的难度,而采用分布式故障诊断系统可以有效避免这些因素的干扰,当监测装置安装在架空输电线路上,远离变电站的位置,从而有效降低了故障行波衰减带来的定位不准作用。并且,选择采集线速度的方式,有效降低了弧垂和波速的作用。该技术把这些干扰因素加入到在线测速的方式,提高了架空输电线路故障定位的精度。Due to the long transmission distance of overhead transmission lines,the operating environment is affected by many factors,and fault tripping often occurs.Fault location technology has become the main way to accurately determine the fault location and cause.The difficulty of fault location is increased because the line length,wave head and wave velocity are in change,and the distributed fault diagnosis system can effectively avoid the interference of these factors.When the monitoring device is installed on the overhead transmission line,it is far away from the substation,thus effectively reducing the positioning inaccuracy caused by the fault traveling wave attenuation.Moreover,choosing the method of collecting linear velocity effectively reduces the effects of sag and wave velocity.This technology adds these interference factors to the online speed measurement method and improves the accuracy of the fault location of overhead transmission lines.

关 键 词：架空输电线路 跳闸 故障定位 分布式故障诊断系统 

分 类 号：TM63[电气工程—电力系统及自动化]