一起变压器故障诊断分析启示

通过对一次故障跳闸变压器的诊断试验，详细分析了试验数据，对不能正确反映故障现象的色谱数据，多次取样，最终查明了原因；对三角形接法线圈的直流电阻测试数据从电路原理和数学上进行了分析，总结出能准确判断内部故障性质、相别、程度的科学方法。

Analysis and Hint of a Transformer Fault Diagnosis

Through the diagnosis testing for the transformer of fault tripping, the paper analyzes the test data in detail, and samples many times from chromatograph data that cannot reflect fault phenomenon correctly, and finds out the reasons eventually. Testing data of the DC resistance of triangle connection coil is analyzed on circuit principles and mathematics. The scientific method for judging the characteristics, phases and level of internal fault accurately is summarized.