高压架空输电线路防雷措施的研究与实践

宜昌地区110～220 kV架空输电线路雷击故障比例占输电线路各类故障之首,公司一直高度重视防雷工作,并将线路防雷工作作为当前首要任务,回顾近年来宜昌地区高压架空输电线路逐步开展防雷的历程,从最初单一、零碎的防雷措施,到选取试点线路进行防雷综合治理并推广应用,再到目前实施的差异化防雷为历程,分析评价各阶段、各种防雷措施的效果和优缺点.

Research and Practice of Anti-Lightning Measures of High-Voltage Overhead Transmission Lines

Lightning fault in 110~220 kV overhead transmission lines constitutes the largest percentage of all transmission line failures in Yichang area.As a result,Yichang Electric Power Company has always attached great importance to anti-lightning and gives priority to anti-lightning of transmission lines these days.The study on gradual process of anti-lightning of high-voltage overhead transmission lines in Yichang over the years shows that four stages are involved: the initial stage in which the anti-lightning measures are simple and unsystematic,the second stage in which comprehensive measures are taken in some chosen areas,the third stage where the comprehensive measures are widely applied,and the present last stage in which different anti-lightning measures are adopted according to different transmission lines.The effects,advantages and disadvantages of all the anti-lightning measures in different stages are analyzed and evaluated.