杭州地区输电线路雷击故障原因及对策
杨先进,胡伟,费敏
国网杭州供电公司,浙江 杭州 310009
摘 要:分析了杭州地区110 ~ 500 kV 输电线路雷击跳闸原因,并根据该地区雷电活动的特点制定了相应的防雷改造对策,通过采用“改造接地电阻为主,加装避雷器为辅”的防雷措施,大幅度提高杆塔的反击耐雷水平,有效防止线路绕击,降低了线路雷击跳闸率。
关键词:输电线路;雷击;原因;对策
中图分类号:TM862 文献标识码:B 文章编号:1007-3175(2014)02-0041-03
Transmission Line Lightning Fault Causes and Countermeasures in Hangzhou Area
YANG Xian-jin, HU Wei, FEI Min
Hangzhou Power Supply Company of State Grid, Hangzhou 310009, China
Abstract: Analysis was made to 11 0~500 kV transmission line lightning tripping causes in Hangzhou area and according to the features of the area lightning activities, this paper laid down the corresponding anti-lightning reform countermeasures. Via adoption of anti-lightning measures as reforming grounding resistance as the main; additionally installing arrestors as the assistance, the anti-lighting level of pole tower was greatly lifted, which effectively prevents lines from winding lighting, reducing line lighting tripping rate.
Key words: transmission line; lightning; cause; countermeasure
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