Scott接线牵引变压器运行特性与等值模型研究  

Study on Operation Characteristics and Equivalent Model of Scott Connection Traction Transformer

作　　者：吴命利[1] 范瑜[1] 辛成山[1] 

机构地区：[1]北方交通大学电气工程学院,100044

出　　处：《电工技术学报》2003年第4期75-80,共6页Transactions of China Electrotechnical Society

摘　　要：利用漏磁阻抗概念讨论了Scott接线变压器的负载特性 ,特别是中性点电位偏移问题 ;提出了Scott接线变压器的两相等效电路 ,并揭示出了与利用系统坐标变换方法一致的三相—两相阻抗变换关系。Using the conception of leakage impedance,the load characteristics,especially the potential drift of neutral,of Scott connection transformer are discussed.Two phase equivalent circuit of Scott connection transformer is put forward.The impedance transformation relations between 3 phase and 2 phase are revealed,which are identical to the results obtained from the system coordinate transformation method.Finally,a mathematical model in phase coordinates,which can be used in steady state and transient analyses,is proposed.

关 键 词：Scott接线变压器 漏磁阻抗 数学模型 等效电路 牵引变压器 

分 类 号：TM922.73[电气工程—电力电子与电力传动]