摘要
避雷器是用于保护电气设备免受高瞬态过电压危害并限制续流时间也常限制续流幅值的一种电器,使电气设备免受雷电过电压和操作过电压损害。当避雷器受潮和劣化,会使避雷器发热和阻性电流增加,严重时将导致避雷器热崩甚至发生爆炸,造成电网大面积的停电。本文通过对一起变电站阻性电流不合格的避雷器开展综合检测和解体检查,分析避雷器缺陷原因,提出避雷器受潮的控制措施。
The arrester is used to protect the electrical equipment from high transient overvoltage harm and limit the continuation time and often limit the continuation amplitude of a kind of electrical equipment,so that the electrical equipment from lightning overvoltage and operating overvoltage damage.When the lightning arrester is damp and deterioration,it will make the lightning arrester heat and resistance current increase,serious will lead to the lightning arrester heat collapse or even explosion,causing a large area of power failure.In this paper,through a transformer substation resistance current unqualified lightning arrester comprehensive detection and disintegration inspection,analysis of the defects of the lightning arrester,and put forward the lightning arrester damp control measures.
作者
岳刚
Yue Gang(Lijiang Power Supply Bureau,Yunnan Power Grid Co.,LTD.,Lijiang 674100)
出处
《云南电力技术》
2021年第3期39-41,49,共4页
Yunnan Electric Power
关键词
避雷器
劣化
阻性电流
Lightning arrester
Degradation
Impedance current
