高压电力电缆故障起因及排查方法探析

Analysis of the Fault Causes of High-voltage Power Cables and the Investigation Methods

高压电力电缆是电力系统最主要和最重要的设备之一,是发供电设备的连接纽带,是电力系统的"经脉",某根电缆出现故障,都极大可能影响整个发供电系统的正常运行,因此,电力电缆的安全稳定和电缆故障的迅速排查极其重要,基于此,以经典电桥法、低压脉冲反射法、直流高压闪络法及冲击高压闪络法4种故障排查方法为例,说明了电缆故障排查的基本步骤,以及各种排查方法的原理、使用条件和优缺点。

The high-voltage power cables power system is one of the main and the most important equipment of electric power system, is the connecting link of power equipments and ＂ channels ＂ of the power system. The normal operation of the entire pow- er supply system could be affected by the failure of a cable, so the safety and stability of the power cable the rapid investigation of cable fault is extremely important. With 4 investigation methods like classic bridge method, low pressure pulse reflection method, DC high- voltage flashover method and Impulse high-voltage flashover method as examples , describes the basic steps of the fault investigation methods of cables as well as the principle, use conditions and the advantages and disadvantages of the investigation methods.