反冲压缩灭弧防雷装置原理及挂网运行

Principle and actual operation effect of recoil compression arc extinguishing lightning protection device

配网线路具有分布广、绝缘水平低的特点。对周围电磁场变化敏感,极易受雷电灾害影响。雷击引起的配网线路跳闸次数占跳闸总次数的70%~80%,严重影响了电网稳定性、用户用电可靠性。2020年在云南省某县的几条10 kV配网线路安装了一种新型的防雷装置——反冲压缩灭弧防雷装置。从全年运行效果来看,安装有反冲压缩灭弧防雷装置的线路均没有发生雷击跳闸事故。其有效解决了10 kV配网线路雷击跳闸问题。

The distribution network line has the characteristics of wide distribution and low insulation level.It is sensitive to changes in the surrounding electromagnetic field and is extremely vulnerable to lightning disasters.The n umber of distribution network line trips caused by lightning strikes accounts for 70%to 80%of the total n umber of trips,which seriously affects the stability of the power grid and the reliability of users’electricity.In 2020,a new type of lightning protection device-recoil compression arc extinguishing lightning protection device was installed on several 10 kV distribution network lines in Yunnan Province.Judging from the annual operating results,no lightning trip accident occurred in the lines installed with recoil compression arc extinguishing lightning protection devices.It effectively solves the lightning trip problem of 10 kV distribution network lines.