中国电力2012，Vol.45Issue(5)：43-47,5.
配线接地雷电感应过电压特征分析
Characteristics analysis on the lightning induced over voltage and its attenuation factors through metal pipe buried with overhead distribution lines
摘要
Abstract
In order to understand the lightning induced voltage characteristics and actual attenuation effect of buried metal pipe on the possible over-voltage, the waveforms of over voltage before and after buried metal pipe when lighting happens are observed and analyzed. The analysis shows that the shape of over voltage waveform is basically unchanged around SO m after buried metal pipe. However, the magnitude is attenuated. The attenuation factor is mainly related to the distance of lightning. When lighting happens 1 000 m away from the observation place, the attenuation ratio is about 20%. The attenuation ratio is decreased when the distance increases. The average of the attenuation ratio is about 6% when the lightning happens within 3-7 km. Moreover, the attenuation ratio is also related to the direction of lightning.关键词
架空配电线路/雷电/感应过电压/穿金属管埋地/衰减/回击Key words
overhead distribution lines/lightning/induced voltage/through pipe buried/attenuation/stroke分类
信息技术与安全科学引用本文复制引用
陈绍东,黄智慧,张义军,王建国,李斌,曾昌军,陈杏容..配线接地雷电感应过电压特征分析[J].中国电力,2012,45(5):43-47,5.基金项目
公益性行业科研专项(GYHY201006005) （GYHY201006005）
