三相变压器的联结组方法

A Way to Solve a Problem on Three-phase Transformer Connection Grop

三相变压器联结组用钟面上的钟点数来表示 .三相变压器联结组问题分为两类 :第一类别是已知三相变压器的联接方式 ,判定其标号 ;第二类是给定了标号 ,确定三相变压器的联接 .提出了一种用有向线段表示电势、相电势分析第二类问题的方法 ,通过将一台三相变压器分别联接成 Yy1 0和 Yd3实例表明 ,和传统方法相比 ,该法既可减少实际联接中的差错 ,也适合解决第一类问题 .

The connection group of a three phase transformer is indicated by the hours on a clock face. There are two types of problems on three phase transformer connection group:one is to mark the hours when the connection manner of the transformer is known, and the other is to determine the connection manner when the hours are given. In this paper is introduced a way to solve the second problem. The use of it is illustrated by connection forms of two Yy10 and Yd3 of a three phase transformer There are few mistakes in the use of it. The way can also be used for the solution of the first type of problems.