基于阻抗边界法的变压器杂散损耗计算与分析  

Calculation and analysis of stray loss of transformer based on impedance boundary method

作　　者：赵志刚[1] 郭莹[1] 魏鹏[1] 刘佳[1] 尹赛宁 杨凯 ZHAO Zhigang;GUO Ying;WEI Peng;LIU Jia;YIN Saining;YANG Kai(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technolog)

机构地区：[1]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300132

出　　处：《大连理工大学学报》2018年第4期422-427,共6页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(51107026;51677052;51237005)

摘　　要：为研究变压器结构件中的杂散损耗问题,基于Problem 21基准族中的P21-B模型进行了详细实验研究和仿真分析.采用测量与仿真结合法对不同激励电流导磁钢板中的杂散损耗进行了测量分析,并且针对现有测量方法的不足,引入温度系数因子对其修正,得到了更为准确的杂散损耗测量结果;同时,借助工程电磁场数值计算软件MagNet,分别采用传统有限元法和有限元与阻抗边界结合法对该模型进行仿真计算.通过对比分析,发现相较于传统有限元法,有限元与阻抗边界结合法在得到较为准确的损耗结果的同时,还能减少计算成本,节省计算资源,更适合工程应用,所得结论和结果有助于通过优化设计提高变压器的性能指标.In order to study the stray loss of transformer,detailed experimental research and simulation analysis are carried out based on the P21-B model of Problem 21 benchmark family.A method of combining measurement with simulation is used to measure stray loss in magnetic steel plate under different current excitations.According to the deficiency of the existing measurement methods,the temperature coefficient factor is introduced to the correction,and the more accurate stray loss measurement results are obtained.The traditional finite element method and a method of finite element combined with impedance boundary are used to simulate the model by using engineering magnetic field numerical calculation software MagNet.Through comparative analysis,it is found that the method of finite element combined with impedance boundary can obtain accurate loss results,reduce the computational cost,save the computational resources,and be more suitable for the engineering application.The conclusions and results are helpful to improve the performance index of the transformer through the optimization design.

关 键 词：杂散损耗 精细建模 温度影响 有限元法 阻抗边界法 

分 类 号：TM4[电气工程—电器]