高电压技术2024，Vol.50Issue(3)：952-961,中插1,11.DOI:10.13336/j.1003-6520.hve.20221530
基于电磁-流热双向耦合的变压器绕组温升计算及结构参数优化
Temperature Rise Calculation and Structure Optimization Research of Transformer Winding Based on Electromagnetic-fluid-thermal Coupling
摘要
Abstract
The temperature rise of transformer is the key factor affecting its operating state and service life.In order to obtain the temperature distribution of an oil-immersed transformer in the winding area accurately,the electromagnet-ic-fluid-thermal coupling process of the winding is numerically studied by the finite element method(FEM).According to the distribution characteristics of electromagnetic and fluid-temperature field,the calculation models of transformer and winding are established,respectively.Based on heterogeneous grid node data mapping method,the non-average winding loss obtained from the electromagnetic field analysis is loaded into the fluid-temperature field grid as the heat source,and the heat source is modified according to the temperature at each iteration.The bidirectional coupling between electro-magnetic field and fluid-temperature field is realized.On this basis,the response surface of the hot pot temperature and winding structure parameters is established,and the multi-objective optimization research with the purpose of minimizing the winding hot spot temperature and conductor material consumption is carried out.The Pareto optimal solution is ob-tained by the non-dominated sorting genetic algorithm(NSGA-Ⅱ),and the four optimization schemes on the Pareto front are analyzed.The results show that the optimized winding hot spot temperature and the amount of conductor are signifi-cantly reduced.The research of this paper provides a feasible method for the optimal design of transformer structure.关键词
油浸式变压器/电磁-流热耦合/绕组结构参数/响应面法/多目标优化Key words
oil-immersed transformer/electromagnetic-fluid-thermal coupling/winding structure parameters/response surface methodology/multi-objective optimization引用本文复制引用
袁发庭,杨文韬,韩毅凛,陈炜,姜岚,唐波..基于电磁-流热双向耦合的变压器绕组温升计算及结构参数优化[J].高电压技术,2024,50(3):952-961,中插1,11.基金项目
湖北省教育厅科学技术研究项目(Q20211212) （Q20211212）
宜昌市科技计划(A21-3-010). Project supported by Science and Technology Research Program of Hubei Provincial Department of Education(Q20211212),Yichang Natural Science Research Project(A21-3-010). （A21-3-010）
