摘要
35 kV输电线路因绝缘水平低,雷击电磁暂态特性与高电压等级输电线路有较大区别;线路防雷技术人员根据高电压等级线路避雷器的使用方法开展35 kV线路防雷,导致了避雷器频繁爆炸的问题。利用电磁暂态分析软件ATP-EMTP,对35 kV线路雷击特性进行了分析,提出了35 kV线路避雷器应多基杆塔多相导线同时安装的原则;通过对不同雷电流作用下线路避雷器能量吸收情况进行分析,说明了线路避雷器频繁爆炸的原因,提出了解决现有35 kV线路防雷问题的可行方案。
Due to low insulation level,the lightning electromagnetic transient characteristics of 35 kV transmission line are very difference from high voltage transmission line. Technicians carry out 35 kV line lightning protection based on the use of high voltage level line lightning arrester,resulting in frequent explosion of lightning arrester. In this paper,the electromagnetic transient analysis software ATP-EMTP was used in lightning characteristics analysis of 35 kV line. The line arrester should be multi tower and multi-phase installed in 35 kV line lightning protection. Based on the analysis of the energy absorption of line surge arrester under different lightning current,the reason of frequent explosion of line arrester is explained. A feasible scheme to solve the lightning protection problem of the existing 35 kV line is proposed. The results of this study have important reference value for the lightning protection of 35 kV line.
作者
刘守豹
曾伟
廖文龙
刘强
LIU Shoubao;ZENG Wei;LIAO Wenlong;LIU Qiang(Sichuan Water Conservancy Vocational College,Chengdu 611830,China;Siehuan Electric Power Industrial Adjustment Test Institute,Chengdu 610072,China)
出处
《电瓷避雷器》
CAS
北大核心
2018年第6期34-38,共5页
Insulators and Surge Arresters
关键词
雷击暂态
线路避雷器
架空避雷线
防雷措施
lightning transient
line arrester
overhead lightning conductor
lightning protection measure
