电缆故障的脉冲反射测试技术与特殊波形的分析

The Test Technology and Special Waveform Analysis on Pulse Reflection of Cable Fault

简要介绍了脉冲反射法测试电缆的低阻、高阻、断线、泄漏和闪络性故障的典型波形与距离的测量,着重对故障点位于电缆两端及其附近(盲区)时的波形畸变进行理论探讨与实测研究,从而找出波形畸变的理论依据及在该状态下故障测量的有效方法。

This article briefly introduces the pulse reflection method to test the cable fault waveform and distance measurement,including the low resistance, high resistance, wire break, leak and flashover of cable fault. Of fault point at both ends or near ends （ blind area） of the cable, the waveform distortion are theoretically studied and experi- mentally discussed. And then find out the theory basis of waveform distortion and the effective method to measurement fault in the special condition.