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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。
The author introduces the principle of traveling wave method for measuring the transmission line, summarizes the current situation of the research on the characteristics and fault location of the railway autobased / through circuit, and studies and analyzes the application of traveling wave method in the measurement of autistic / penetration lines It is proposed that the combination of zero mode and linear mode component be used to identify fault reflected point and reflected wave from opposite end bus with zero modulus component, Method of measuring distance with linear module. And use PSCAD / EMTDC modeling and simulation analysis. Simulation results show that the proposed method is feasible.