行波法在10kV铁路自闭/贯通线故障测距中的应用

作者介绍了输电线路行波法测距的原理,概述了铁路自闭/贯通线路的特点及其故障测距的研究现状,研究并分析了行波法在自闭/贯通线测距中应用的特殊性,即自闭/贯通线的线路结构、供电方式及负荷的影响,提出了将零模和线模分量相结合,用零模分量对故障点反射波和对端母线反射波进行识别,用线模分量进行测距的方法.并用PSCAD/EMTDC对其进行了建模及仿真分析.仿真结果表明,所提出的方法是可行的.

APPLICATION OF TRAVELLING WAVE BASED FAULT LOCATION IN 10kV RAILWAY AUTOMATIC BLOCKING AND CONTINUOUS POWER TRANSMISSION LINES

The principle of traveling wave based fault location of power transmission lines is briefly presented. The features of automatic blocking and continuous power transmission line and the present research situation of its fault location are concisely described. The particularities of applying the traveling wave to the fault location of automatic blocking and continuous power transmission line, i.e., the influences of its line structure, power supply mode on the fault location, are researched. On this basis, a new traveling wave based fault location method, in which the aerial mode is combined with the ground mode, i.e., to distinguish the reflected wave of the faulty point from that of the bus at the opposite terminal by ground mode components and to locate the faulty position by aerial mode component, is proposed. The modeling and simulation of the proposed method are conducted by software PSCAD/ EMTDC. The simulation results show that the proposed method is feasible.