基于“场路”结合的多分裂式变压器有关特性分析  

Characteristic Analysis of the Transformer with Split Types of Winding by a Field-Circuit Combined Method

作　　者：李亚男 刘小鹏 李勇 李晓松[1] 魏兵 LI Ya-nan;LIU Xiao-peng;LI Yong;LI Xiao-song;WEI Bing(Hunan Province Key Laboratory of Intelligent Power Grid Operation and Control,Changsha University of Science and Technology,Changsha 410004,China;TBEA Hengyang Transformer Co.,Ltd,Hengyang 421007 ,China;Enshi Power Supply Company ,State Grid Hubei Power Co.,Ltd.,Enshi 445000,China)

机构地区：[1]湖南省智能电网运行与控制重点实验室长沙理工大学,长沙410004 [2]特变电工衡阳变压器有限公司,湖南衡阳421007 [3]国网湖北省电力有限公司恩施供电公司,湖北恩施445000

出　　处：《电力学报》2018年第5期417-424,共8页Journal of Electric Power

基　　金：湖南省战略新兴产业科技攻关项目(2016GK4038)

摘　　要：研究基于"场路"结合的方法,对一台四分裂式机车变压器的运行特性进行了分析和计算。先在磁"场"分析的基础上计算高低压侧多绕组支路的电感矩阵;然后列写电"路"稳态方程对变压器不同运行状态下的有关特性进行分析,如,高压支路电流分配关系和端口电压;最后基于Matlab软件对变压器匝间短路故障进行了建模和仿真,给出了一种故障判断的方法。计算结果表明,"场路"结合方法能较方便的模拟变压器多种运行工况,能较好地反映绕组耦合关系及分裂式变压器特性,并提供了一种行之有效的故障判断方法。Based on the"field-circuit"combined method,the operating characteristics of a locomotive transformer with four split types of winding are analyzed and calculated.Firstly,the inductance matrix of multi-winding branches among the high and low voltage sides is calculated,which isbased on the magnetic"field"analysis.And then,the relevant characteristics of the transformer under several operating conditions were analyzed with the electrical"circuit"steady-state equation.The characteristics conclude the relationship between current distribution of the four high voltage branches and the port voltage.Finally,the modeling and simulation based on matlab software for the transformer are carried out,and a fault judgment method is given.Results show thatthe"field-circuit"combination method can easily simulate a variety of operating conditions of the transformer,reflects the winding coupling relationship and characteristics of the split-type transformerand provides aeffective fault determination method.

关 键 词：分裂式变压器 运行特性 “场-路”结合 高压支路电流分配 

分 类 号：U264.36[机械工程—车辆工程]