南方电网技术2026，Vol.20Issue(8)：104-113,133,11.DOI:10.13648/j.cnki.issn1674-0629.2026.08.009
基于参数等效及改进混合剖分的变压器绕组温升研究
Research on Temperature Rise in Transformer Windings Based on Parameter Equivalence and Improved Hybrid Profiling
摘要
Abstract
Load capacity and operating life are governed by the hot spot temperature of the transformer windings.A three-dimensional electromagnetic-temperature-fluid coupling model including the shell heat sink is established with an S20-M-630 kVA/10 kV oil-immersed distribution transformer as the research object.Aiming at the problems of complex internal structure of the wind-ing,poor mesh quality of the fluid-solid boundary layer,and low computational efficiency,a winding parameter equivalence method and a hybrid mesh profiling technique combining mapping profilings and free profilings are proposed.The method not only significantly improves the accuracy of the calculation of the winding hot-spot temperature,but also optimises the mesh quality of the fluid-solid boundary layer,which significantly improves the calculation efficiency.The results show that in actual transformer opera-tion,the winding temperature distribution can be effectively reflected by the winding parameter equivalence method,and compared with free profiling,hybrid profiling reduces the overall number of 3D meshes and simulation time by 73.60%and 82.50%.The rela-tive error between the simulated and experimental values of the winding hot-spot temperature shall not exceed 1%.关键词
油浸式变压器/热点温度/混合剖分/耦合模型/参数等效Key words
oil-immersed transformer/hot-spot temperature/hybrid profiling/coupling model/parameter equivalence分类
信息技术与安全科学引用本文复制引用
刘振邦,杜志叶,黎鹏,李根,牛航,李炳昊..基于参数等效及改进混合剖分的变压器绕组温升研究[J].南方电网技术,2026,20(8):104-113,133,11.基金项目
国家自然科学基金资助项目(52377015).Supported by the National Natural Science Foundation of China(52377015). （52377015）
