文献类型：期刊文献

中文题名：一种输电线路故障测距新方法

英文题名：New Method of Fault Location for Transmission Lines

作者：李一峰[1];陈平[2]

机构：[1]广东海洋大学信息学院,湛江524088;[2]山东理工大学电气与电子工程学院,淄博255049

年份：2008

卷号：20

期号：4

起止页码：125

中文期刊名：电力系统及其自动化学报

外文期刊名：Proceedings of the CSU-EPSA

收录：CSTPCD、、北大核心2004、CSCD_E2011_2012、北大核心、CSCD

语种：中文

中文关键词：电力系统;暂态行波;输电线路;故障测距;电磁暂态分析软件

外文关键词：power system; transient travelling waves; transmission lines; fault location; electro magnetic transient program（EMTP）

中文摘要：针对传统距离保护方法存在许多不足,提出了一种输电线路故障测距新方法。该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行波与该参考线路暂态电流行波形成的反向行波浪涌与其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。通过电磁暂态分析软件仿真计算,表明该方法不仅能够对各种故障情况进行正确的识别,而且具有较高的精确度。

外文摘要：For the disadvantages of the classic distance relay protection, a new method of fault location of transmission lines is proposed. In the new method, the arbitrary ＂finite length＂ line is selected as a reference line. The directional （forward and backward ） travelling waves are formed by the transient currents of the fault line and the reference line. The surges coming from the fault is identified by comparing the polarity of each backward surge with that of the corresponding forward surge. The effect of surges which come from the reference line is avoided. The EMTP simulation results show that this method is not only reliable in the distance protection of power system but also have high accuracy.