摘要
分清高压输电线路在空气劣化时的闪络成因对于电力系统营运者是极为重要的。通过对引起空气放电的机理、“雾闪”和污闪概念及其区别的阐述,结合广州电网2005年1月28日、29日两起输电线路闪络的实例,分析了导致输电线路污闪和“雾闪”的原因、过程及其机理,并提出了做好防“雾闪”工作的对策。
It is very important for power system operators to distinguish different causes of flashover on HV transmission lines when the air is deteriorated. This paper describes the mechanism of air discharge, expounds the concept of “fog flashover” and pollution flashover along with the differences between them, and takes two flashover cases in Guangzhou power grid for example to analyze the causes, process and mechanism of “fog flashover” and pollution flashover on transmission lines. Countermeasures against “fog flashover” are proposed as well.
出处
《广东电力》
2005年第6期16-18,27,共4页
Guangdong Electric Power
关键词
高压输电线路
闪络
空气
沿面放电
HV transmission line
flashover
air
creeping discharge
