摘要
基于对黄冈电网220kV及以上输电线路历年雷击闪络故障的分析,以及找到的故障原因,提出了降低杆塔接地电阻、加装线路避雷器和安装可控放电避雷针等多种防雷措施,并进行了实施,经过实际运行验证,采取的这些防雷措施有效地降低了线路雷击跳闸率。
Based on the analysis and causes of lightning flashover of transmission line above 220 kV in Huanggang grid in the past years and proposes lightning protection measures including reducing grounding resistance of poles and towers,installing an extra line surge arrester and controllable discharge lightning rod.Experiment proves that these measures effectively reduce lightning outage rate.
出处
《黑龙江电力》
CAS
2010年第5期380-383,共4页
Heilongjiang Electric Power
关键词
输电线路
防雷措施.
接地电阻
transmission line
lightning protection measures
grounding resistance
