两路电源供电的三绕组变压器的设计 

陈伯根 
福州天宇电气股份有限公司，福建 福州 350012 
 

摘 要：给出了两路电源供电的梯级小水电站变压器的两种设计方案，分析了采用三绕组变压器作为主变的优点。对三绕组变压器的额定容量、电压比、联结组别、阻抗电压等关键参数的选取进行了介绍，并对三绕组变压器的结构和外部平面布置进行了改进。经实例验证，采用改进后的三绕组变压器的设计方案简化了水电站的整体布置，经济性和节能效果良好。
关键词：两路电源供电；三绕组变压器；结构设计
中图分类号：TM402 文献标识码：B 文章编号：1007-3175(2013)10-0027-04

Design of Duplicate Power Supply Three-Winding Transformer 

CHEN Bo-gen 
Fuzhou Tianyu Electric Co., Ltd, Fuzhou 350012, China 
 

Abstract: Two kinds of design plans were given for cascade small hydropower station’s transformer of duplicate power supply. Analysis was made to the advantages of adopting three-winding transformer as main transformer. Introduction was made to the selection of rated capacity, voltage ratio, vector group, impedance voltage etc key parameters for three-winding transformer, and improvement was made to structure and external plane layout of three-winding transformer. After verification of actual examples, the design plan adopting improved three-winding transformer has simplified hydropower station’s integrated layout, and economy and energy saving effect are fine.
      Key words: duplicate power supply; three-winding transformer; structure design