摘要
介绍了某750 kV输电线路故障跳闸情况,分析雷击跳闸原因,并对架空输电线路防雷工作提出降低杆塔接地电阻、减小避雷线保护角、增加线路外绝缘水平等防范措施,提高了750 kV输电线路防雷性能。
The author introduces a fault tripping of a 750 kV Transmission Line in high altitude. The lightning stroke tripping cause is analysed. Some measures to protect the transmission line against lightning stroke are presented such as decreasing the grounding resistance of the tower, reducing the protection angle of the earthing wires and increase the insulation levels of the line external insulation. The lightning protection performance of 750 kV transmission line is improved.
出处
《电瓷避雷器》
CAS
北大核心
2014年第4期89-92,共4页
Insulators and Surge Arresters
关键词
输电线路
雷击
跳闸
防雷
transmission line
lightning stroke
tripping
lightning protection
