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

作　　者：李姗姗 张建华 LI Shan-shan;ZHANG Jian-hua(China Datang Corporation Science and Technology Research Institute Co.,Ltd.,Central-China Electric Power Test Research Institute,Zhengzhou 450046,China)

机构地区：[1]中国大唐集团科学技术研究院有限公司华中电力试验研究院,河南郑州450046

出　　处：《变压器》2020年第4期43-46,共4页Transformer

摘　　要：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.

关 键 词：匝间短路 等效模型 磁动势守恒 等效电流法 

分 类 号：TM401.1[电气工程—电器]