摘要
针对某变电站220 kV变压器油中多项特征气体含量超标的故障,利用特征气体法和三比值法对其故障原因进行分析,并结合相关试验结果,判断出故障原因是变压器内部绝缘纸受潮导致局部放电。经过现场检查,验证了分析结果的正确性,并采取相应措施消除了变压器故障。
For a substation 220 kV In this paper,the characteristic gas method and three ratio method are used to analyze the fault causes of transformer oil with excessive characteristic gas content.Combined with the analysis of relevant test results,it is concluded that the fault cause is partial discharge caused by damp insulation paper in transformer.Through field inspection,the correctness of the analysis results is verified,and corresponding measures are taken to eliminate the transformer fault.
作者
李嫱
孙彦娉
Li Qiang;Sun Yan-ping
出处
《电力系统装备》
2020年第18期96-97,共2页
Electric Power System Equipment
关键词
特征气体法
三比值法
绝缘纸受潮
局部放电
characteristic gas method
three ratio method
insulation paper damp
partial discharge
