一起800kV罐式断路器漏气原因分析

Analysis on Causes of a Gas Leakage on the 800kV Tank-Type Circuit Breaker

描述了平凉变电站750kV罐式断路器本体漏气经过,对漏气原因进行了初步分析,归纳出可能的漏气原因,并经过解体分析,最终确定了漏气原因。为避免此类问题重复发生,指出厂家在以后生产制造过程中需要注意的问题,以期为后续750kV工程电气主设备的制造和安装提供指导。

This paper describes the gas leakage incident of 750 kV tank-type circuit breaker which occurred in the Pingliang Substation. Preliminary investigations are made into the leakage incident and the causes of it are sought and found. The disassemble inspection carried out later confirms the findings. To prevent the similar fauhs from happening, the author proposes some precautions to which the manufacturer should pay attention in the process of manufacture. In addition, suggestions provided in the paper will also serve as guidelines for the manufacture and erection of the main equipment of the incoming 750 kV projects.