高电压技术2012，Vol.38Issue(1)：157-166,10.
鄂西三峡地区220kV线路差异化防雷技术与策略
Technology and Strategy of Differentiated Lightning Protection for 220 kV Transmission Line in Three Gorges Area of Western Hubei
摘要
Abstract
The weak lightning protection performance of transmission lines should be improved in complicated climate and geographical environments as well as frequent lightning activities in Three Gorges Area.In order to improve stability and reliability of power supply,it is very important to improve the assessment level and rebuilding ability of lightning protection for transmission lines.Consequently,we researched the lightning protection of 220 kV transmission line in Three Gorges Area by the technology and strategy of differentiated lightning protection.Moreover,we analyzed the distribution law of lightning flashovers for 220 kV transmission lines,consisting of line number,tower type,span,landform,lightning protection measures,and so on.The analysis results can provide a macroscopic guidance for the differentiated lightning protection work.For the typical transmission line,microscopic lightning protection risk assessment for each tower can be carried out.When making lightning disaster risk assessment,the differences of lightning activities,terrains and topographic features,line＇s structures and insulation configurations should be considered.Then,the differentiation scheme of lightning protection can be proposed based on assessment results according to the technology-economy.Finally,the change of lightning protection performance before and after rebuilding through the lightning risk assessment for each tower and whole line can be analyzed.After the lightning protection measures are taken in network,the practical rebuilding effect should be assessed continuously.关键词
差异化防雷/鄂西三峡地区/输电线路/220kV/雷击闪络风险/治理策略Key words
differentiated lightning protection/Three Gorges area of western Hubei/transmission line/220 kV/lightning flashover risk/management strategy分类
信息技术与安全科学引用本文复制引用
阮羚,谷山强,赵淳,姚尧,李晓岚..鄂西三峡地区220kV线路差异化防雷技术与策略[J].高电压技术,2012,38(1):157-166,10.基金项目
国家电网公司科技项目 （）
