高压电器2012，Vol.48Issue(6)：56-60,5.
输电线路杆塔塔头引雷能力模拟试验研究
Study on Simulation Test for Triggered Lightning Ability of Transmission Line Tower Head
王羽 1文习山 1蓝磊 1安韵竹 1贺夏 1蒯强 1杨跃光1
作者信息
摘要
Abstract
To study on the ability to triggered lightning of a overhead transmission line tower head, a typical 500 kV AC transmission line model with a ratio of 1:25 is established. Numerous discharging experiments are conducted with standard switching voltage impulse. With analysis on experimental data, variation of transmission lines shielding failure probability from the tower head to the middle line span is achieved in this paper. The combination of theoretical analysis and on-site operation experiences shows: Tower head's triggered lightning ability is obvious, but it is limited in protection scope.The combination of operating experience and theory analysis shows that the tower head has obvious triggered lightning ability while its protective range is limited, and transmission line near the tower is of the largest shielding failure probability. The test described in this paper can provide reference to where electrode should be set on during shielding failure simulation tests, but also can indicate a transmission line range that can be easily suffered from shielding failure and needs more protective measures. This can be a guidance to improve more on the safety of transmission line operation.关键词
500 kV输电线路/绕击/模拟试验/杆塔塔头/雷电屏蔽/保护范围Key words
500 kV transmission line/ shielding failure/ simulation tests/ tower head/ lightning shielding/ protective range分类
信息技术与安全科学引用本文复制引用
王羽,文习山,蓝磊,安韵竹,贺夏,蒯强,杨跃光..输电线路杆塔塔头引雷能力模拟试验研究[J].高压电器,2012,48(6):56-60,5.
