一起220kV变压器绕组短路故障诊断与分析

Analysis and Diagnosis of 220kV Transformer Winding Short-Circuit Fault

介绍了一起由外部短路故障引起的变压器短路事故,分析了故障录波、保护动作情况以及试验数据,并通过解体试验验证了诊断结果。提出了关于提高变压器自身抗短路能力不足问题的几点建议。

The transformer short-circuit fault caused by external short-circuit is introduced. The fault record, the protection action and the test data are analyzed. The diagnosis is verified by disintegration test. Some suggestions on improving the ,shortcomings of transformer short-circuit resistance of the transformer are presented.