6kV架空电力线路的防雷工程改造  

Improvement of Lightning Protection Engineering on 6kV Overhead Power Line

作　　者：贾文生[1] 李拥军[1] 郑江[2] 

机构地区：[1]晋城煤业集团铁运分公司,山西晋城048000 [2]广西大学电气工程学院,广西南宁530004

出　　处：《山西电力》2009年第5期26-28,共3页Shanxi Electric Power

摘　　要：为了解决成庄—山口6 kV架空电力线路的雷害问题,保证山口站正常供电和成庄方向煤炭外运通道畅通无阻,经过比较防雷效果、抗风及抗冰性能、安装及运行维护、使用寿命、技术经济等,选用线路型头部分裂均压式避雷针综合防雷装置,该防雷方案的特点是屏蔽杆塔,防止雷击杆塔顶部,从而大幅度地降低线路的雷击跳闸率。该线路自2008年7月防雷改造至今,经过雷电活动频繁的8月—10月考验,未发生过雷击跳闸事故,取得了初步的防雷效果。In order to solve the lightning accident problem of Chengzhuang-Shankou 6 kV CHENG-SHAN Overhead Power Line, and ensure the smoothness of the normal power supply of Chengzhuang Station and the outward transportation channel of coal along Shankou, the lightning protection scheme of comprehensive lightning system of the lightning rod with split equipotential head is selected for the improvement of lightning protection of this transmission line through the comparison of lightning effect, wind proof and ice proof performance, convenient installation, running and maintenance, service life and technical economy. The feature of this lightning protection scheme is to protect the tower from the lightning stroke against the top of tower thus to reduce the tripping rate of the transmission line due to lightning stroke in large scale with the lowest investment cost, simple installation, maintenance free and long service life. From the improvement of lightning protection up to now, this transmission line has never had tripping accident due to lightning stroke through the test from August, 2008 to October, 2008 with frequent lightning activities and initial lightning protection effect has been acquired.

关 键 词：架空电力线路 避雷器 线路型头部分裂均压式避雷针 

分 类 号：TM862[电气工程—高电压与绝缘技术]