摘要
在中压配电网中每年雷击造成线路跳闸和设备损坏的比率高达70%以上,要降低雷击故障,提高供电可靠率,在配网线路上安装防雷设备是主要措施之一,其中应用最广的设备为金属氧化物避雷器。在简述中压配电网中使用的几种常见避雷器设备性能特点的基础上,介绍了一种可带电安装、更换以及免维护的组合型金属氧化物避雷器,即带脱离装置的跌落式金属氧化物避雷器,供中压配电网运行维护人员参考。
70% of line trips and damage of equipment are caused by lightning strike.It is a im- portant measure that lightning protection equipments are installed in medium voltage distribution networks to reduce lightning faults and improve power supply reliability. The zinc oxide attester is the most widely used equipment for lightning protection. The performance characteristics of several common lightning arrester is discussed and a combined drop-out zinc oxide arrester with release unit which is designed for live installation, live replacement and maintenance-free is introduced to offer references for operation and maintenance staffs.
出处
《电瓷避雷器》
CAS
北大核心
2011年第6期58-60,共3页
Insulators and Surge Arresters
关键词
电网防雷
避雷器
跌落型
脱离装置
lightning protection
arresters
drop-out
release unit
