高压电缆故障分析与检测方法

High voltage cable fault analysis and detection methods

针对动力电缆的各种故障形式,采用二次脉冲法进行检测,可以查明动力电缆的故障性质、故障发生原因、故障点.应用表明:传统的低压脉冲法仅仅能看到电缆的全长波形,无法通过低压脉冲法测出故障距离,而采用行波反射法与二次脉冲法进行测试可以快速、准确地找出动力电缆的故障点.

This paper briefly describes the various test methods of cable fault, the cause of power cable fault, power cable fault classification and the fault testing procedures, and emphatically introduces the principle of traveling wave reflection method and the current advanced secondary principle test pulse method in the world. Finally this study uses an actual case shows that the secondary pulse method is indeed a very suitable for the situation of our country＇s most advanced test method.