摘要
针对１台５０ＭＶＡ电力变压器负载损耗超标和局部过热的问题，通过建立可解的数学物理模型，利用计算机和有限元方法对线圈漏磁场、线圈涡流损耗和结构件杂散损耗进行了线圈不同安匝布置的三个方案的计算，并对计算结果进行了比较和分析，确定了一种使其所产生的线圈漏磁场分布合理和变压器附加损耗较小的线圈安匝布置方案，成功地解决了负载损耗超标和局部过热的问题，并得出了在变压器工程设计中具有参考价值的结论。
To solve the problem of both out-of-limit load loss and partial overheating in a 50 MVA power transformer, this paper computes the stray field and eddy losses in coils and stray olsses in structure parts for three schemes that have different ampere-tmrn arrangements by setting up solvable mathematical models and using the FEM. Through analyzing and comparing the computed results among the schemes, a kind of ampere-turn arragement is determinde which has more resonable stray field distribution and less additional losses in the power transformers. Load loss can be then reduced and partical overheating be removed successfully. Useful conclusions in the power transformer design have been drawn.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
1997年第1期17-22,共6页
Journal of North China Electric Power University：Natural Science Edition
关键词
变压器
漏磁场
线圈涡流损耗
杂散损耗
计算
transformer
stray field
eddy loss in coil
pratial overheating
stray losses in structure parts
