配电电缆金属性接地故障查找方法

Location Method for Metallic Grounding Fault of Distribution Cable

电缆因其运行可靠性高,敷设占地少,分布电容较大可改善电网功率因素等优点,目前已在全国大面积使用。因地下敷设,当电缆发生故障时,故障点查找难度大、时间长。文章介绍了金属性接地故障的成因,并结合实际案例,重点研究如何快速定位故障点。

Because of its high operational reliability,less space for laying,and larger distributed capacitance,cables can improve the power factor of the power grid.They have been used in large areas across the country.Due to underground laying,when a cable fails,it is difficult and takes a long time to find the fault point.The causes of metallic ground faults were introduced.Combined with the actual case,this paper focused on how to quickly locate the fault point.