用“场-路”耦合方法分析多分裂式变压器的特性  

Analysis of operating characters of the transformer with split types of windings by a field-circuit coupling method

作　　者：鲍锡阳 李晓松[1] 刘小鹏 李勇 李亚男 BAO Xiyang;LI Xiaosong;LIU Xiaopeng;LI Yong;LI Yanan(Hunan Province Key Laboratory of Intelligent Power Grid Operation and Control,Changsha Univ.of Science and Technology,Changsha 410004,China;TBEA Hengyang Transformer Co.,Ltd,Hengyang 421007,China)

机构地区：[1]长沙理工大学湖南省智能电网运行与控制重点实验室,湖南长沙410004 [2]特变电工衡阳变压器有限公司,湖南衡阳421007

出　　处：《电气应用》2020年第2期12-17,共6页Electrotechnical Application

基　　金：湖南省战略新兴产业科技攻关项目(2016GK4038)。

摘　　要：以一台四分裂式变压器为例,利用其对称性建立1/2"场-路"耦合分析的二维轴对称模型,分析了低压侧绕组空载、接不同性质负载运行以及单个低压绕组或运行或短路或发生匝间短路等多种工况的有关特性。从有关参数与额定值非常接近的分析结果表明,借助于结构上的对称性,建立1/2模型进行分析是可行的。同时也可以看出,"场-路"耦合分析法可较方便地模拟变压器的多种运行工况,是一种较有效的分析方法。Taking a transformer with 4-split types of windings as example, a 2-D axis symmetric model for a 1/2 field-circuit coupling analysis is first established on consideration of its structural symmetry, then the related characteristics of it under various working conditions are analyzed that are under no-load, or rated load, or the operation of single low-voltage winding, or a short-circuited low-voltage winding, or even a turn to turn fault happened in a low-voltage winding. Some conclusions can been drawn from the analysis that the related parameters, for example, the parameters under no-load, are very close to the rating values, so it is feasible only to establish a 1/2 model considering its structural symmetry. Meanwhile, it is found that a field-circuit coupling analysis is an effective analysis method about such a problem because it can be used to conveniently simulate the various operating conditions of the transformer.

关 键 词：“场-路”耦合 分裂式变压器 不同工况 匝间短路 

分 类 号：TM41[电气工程—电器]