同杆双回线跨线故障的准确故障定位方法

本文在深入分析同杆双回线跨线故障特征的基础上提出了一种基于六序分量补偿过渡电阻的同杆双回线跨线故障的准确故障定位方法,基本解决了目前在跨线故障时不能准确定位的问题。该方法能够准确地计算出同杆双回线跨线故障的故障距离和相间过渡电阻,其结果且不受负荷及系统阻抗角变化的影响。该方法理论分析简单,计算量小,可用于实时双回线的距离保护和故障定位。本文最后给出了计算机仿真结果。

A New Accurate Fault Locating Method of the Fault between Two Lines on the Double Circuit Line on the Same Tower

This paper presents a new accurate fault locating method using six sequence components at one terminal. The method can calculate fault currents at fault point, therefor it can get the distance and fault resistance at fault point of the fault between two line accuratly.Proposed method is simple in principle with small calculation and can be used to distance protection and fault location of the double-circuit line on the same tower Results of digital simulation are presented in this paper.