一起特殊气候条件下污闪事故分析

An Accident Analysis of Contamination Flashover under Special Climate Conditions

某变电站发生故障,经过勘察,为母线支柱绝缘子污闪导致,其外绝缘配置符合该地区污区等级要求,但在特殊条件下,仍然发生了污闪。本文详细分析了此次闪络故障的原因,并提出了处理措施。

A Fault occurs in an transformer substation, investigation shows that it is caused by pollution fashover happened in insulator of bus isolating switch, of which external insulation configuration met the requirement of site pollution severity class in this area. But in special conditions, contamination flashover still occurred. In this paper, the reason of the fault is detailed analyzed, treament measures is proposed simultaneously.