三相变压器的连接组别及确定

Connection Group and Determination of Three-phase Transformer

对三相变压器的连接组别与一、二次绕组线电压的相量关系进行分析,提出分析方法。从变压器导电部分的导磁回路、藕合电感原理入手,介绍了绕组同名端、绕组极性的确定、组别时钟表示法及组别连接方式。对三相变压器组30种不同接线方式下的连接组别与一、二次绕组线电压的相量关系进行研究,总结其对应关系,为实际应用提供指导。

The study analyzes the phasor relationship between the connection group of three-phase transformer and the voltage of primary and secondary winding lines,and proposes analysis method.Based on the principle of magnetic conduction circuit and coupling inductance of the conducting part of transformer,the study introduces the same end of winding,determination of winding polarity,group clock representation and group connection.The study analyzes the phasor relationship between the connection groups,and the voltage of primary and secondary winding lines in 30 different connection modes of three-phase transformer sets;and summarizes the corresponding relationship,so as to provide guidance for practical application.