摘要
文章简要介绍了当前国内OPGW的断缆情况和事故分析;分析了雷电放电的两种基本的电流形式即脉冲冲击电流和长时连续电流对OPGW的危害程度,在此基础上,得出长时连续电流形成的稳定电弧它是引起OPGW熔化断股的主要原因,而放电电荷(电荷转移量)是决定对OPGW伤害大小的最重要的参数。同时分析了影响OPGW的耐雷击性能的因素。
The article analyzes the basic lightning currents:impulse current and long duration continuing current, and their different damage on OPGW.The author thinks that long duration of lightning continuing current is the main reason of OPGW melting and breakage,and the lightning charge is the most important parameter.On base of test results,factors that lightning strikes damage the OPGW cables are discussed
出处
《电力系统通信》
2004年第10期60-61,64,共3页
Telecommunications for Electric Power System
