基于等效电流法的变压器匝间短路故障分析

Fault Analysis of Interturn Short-Circuit in Transformer Based on Equivalent Current Method

针对星角接线变压器低压绕组匝间短路问题,建立了变压器匝间短路等效模型,并推导出了低压环流和短路绕组电流表达式,然后根据磁动势守恒提出了基于等效电流法的故障分析方法。

Aiming at the interturn short-circuit problem of the star-angle connection transformer, the equivalent model is established, and the expressions of the angle-side circulating current and the short-circuit winding current are derived. According to the conservation of magnetomotive force, the fault analysis method based on the equivalent current method is proposed.