267MVA/525kV单相自耦变压器故障原因分析

Cause Analysis of Fault on the 267 MVA/525 kV Single Phase Autotransformer

某变电站 5 0 0 k V变压器试验中发现故障后对变压器内部进行检查并作了技术分析。得出了绝缘纸板材质差 ,含潮率高 。

The fault was found at a 500 kV t ransformer in a substation during test.Through its internal inspection,analyze d by technology,the cause of fault was insulating cardboard which material mass was under standard,moisture content was superscale and workmanship was rough.