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.
出处
《电力系统自动化》
EI
CSCD
北大核心
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
关键词
暂态行波
输电线路
故障测距
线路保护
电力系统
power systems transient travelling waves transmission line fault location EMTP
