一种利用暂态电流行波的输电线路故障测距方法  

A NOVEL METHOD FOR FAULT LOCATION OF TRANSMISSION LINES USING FAULT TRANSIENT CURRENT TRAVELLING WAVES

作　　者：陈平[1] 徐丙垠[1] 葛耀中[2] 王茜 

机构地区：[1]淄博科汇电气有限公司 [2]西安交通大学电气工程学院 [3]淄博东宝电子器件有限公司

出　　处：《电力系统自动化》1999年第14期29-32,共4页Automation of Electric Power Systems

基　　金：国家自然科学基金

摘　　要：提出了一种利用暂态电流行波的输电线路故障测距新方法。以同母线上任一“有限长”非故障线路作为参考线路，通过比较由故障线路暂态电流与该参考线路暂态电流形成的反向行波浪涌和对应的正向行波浪涌的极性，识别来自故障方向的行波浪涌，消除了来自参考线路的暂态行波浪涌的影响。ＥＭＴＰ仿真表明这种方法是可行的。A novel method for fault location of transmission lines,using fault induced transient current travelling waves,is presented.The arbitrary sound line with 'finite length' is selected as a reference line,and the directional (forward and backward) travelling waves are constructed using the transient currents of the fault line and the reference line.The surges coming from the fault are identified by comparing the polarity of the backward surge,which is formed by the travelling wave of the transient current of the fault line and the travelling wave in the reference line,against the polarity of the corresponding forward surge.The effect of surges that come from the reference line is avoided.The feasibility of the novel method is proved by EMTP simulation.

关 键 词：暂态行波 输电线路 故障测距 线路保护 电力系统 

分 类 号：TM855[电气工程—高电压与绝缘技术] TM773