摘要
针对电力变压器油浸纸绝缘电容式套管多发事故的现象,分析了套管的绝缘结构,并对绝缘油中气泡和油浸纸的气隙产生局部放电的机理进行探讨。指出油中存有气泡和油浸纸中存有气隙会局部放电,从而造成绝缘被击穿,进而导致套管爆炸。并提出了一些防范措施。
According to frequent accidents in oil immersed insulation capacitive bushing in transformers, the insulated structure of bushing was analyzed and the mechanism of partial discharge caused by air gap between air bladder in insulating oil and oil immersed paper was discussed. Air bladder existing in oil and air gap existing in oil immersed paper could cause partial discharge, which led to insulation breakdown and at last bushing blasted. Some countermeasures were put forward in the end.
出处
《湖南电力》
2007年第3期22-24,共3页
Hunan Electric Power
关键词
电力变压器
套管
局部放电
绝缘
transformer
bushing
partial discharge
insulation
