架空线路接地故障定位难点与关键技术分析

Analysis on Difficulties and Key Technologies of Overhead Line Grounding Fault Location

随着配电网络的发展,10 kV配电网络杆塔线路已经成为配电中最重要的供电线路之一,直接影响着供电安全和可靠性。当出现故障时能否快速定位故障位置和快速恢复供电,是大家关注的热点问题。10 kV架空线路故障中,单相接地故障最为常见。为了尽量减少因停电而引起的损失,介绍10 kV架空线路接地故障的现象,通过模拟现场并构建数学模型,分析当前故障位置的困难所在,并提出了关键技术的解决方法。

With the development of distribution network,the tower line of 10 kV distribution network has become one of the most important power supply lines in distribution,which directly affects the safety and reliability of power supply.When there is a fault,rapid fault location and rapid recovery of power supply have become hot issues of concern.Among 10 KV overhead line faults,single-phase grounding fault is the most common,In order to minimize the loss caused by power failure,this paper introduces the phenomenon of grounding fault of 10 kV overhead line,analyzes the difficulties of current fault location by simulating the site and building a mathematical model,and puts forward the solutions of key technologies.