高电压技术2024，Vol.50Issue(5)：2259-2269,11.DOI:10.13336/j.1003-6520.hve.20221050
基于混合有限元法的油浸式变压器稳态流-热耦合场并行计算方法
Parallel Calculation Method for Steady-state Fluid-thermal Coupling Field of Oil-immersed Transformer Based on Hybrid Finite Element Method
摘要
Abstract
In order to solve the problem of low efficiency of two-dimensional fluid-thermal coupling simulation of oil-immersed transformer,a parallel calculation method based on hybrid finite element method was proposed.Firstly,the se-rial calculation method of dimensionless least squares finite element method and upwind finite element method is implemented by C++language in Visual Studio 2019.Then,the parallel computation of fluid field is realized based on graphic processing unit(GPU),and the parallel computation efficiency of different GPU cards under different grid conditions is compared and analyzed according to the single differentiated turns model.The analysis results show that the larger the data scale is,the more the GPU card stream processors will be,and the better the parallel effect will be.Secondly,based on Intel MKL and open multi-processing(OpenMP),the parallel computation of two-dimensional temperature field is realized,and the influence of different number of grids on the parallel efficiency is compared and analyzed.Finally,a hybrid parallel cal-culation method based on different simulation conditions is proposed and applied to the analysis of the two-dimensional temperature rise hot spot of the winding model of large oil-immersed transformer.The results show that,compared with the serial program,the speedup ratio of the hybrid finite element parallel calculation method reaches 69.5.The experimental re-sults further verify the accuracy of the parallel calculation results,and the research results lay a foundation for the rapid calculation of the flow-thermal coupling problem of large oil-immersed transformers.关键词
变压器绕组/混合有限元/热点/并行计算/加速比Key words
transformer winding/mixed finite element/hot spots/parallel computation/speedup引用本文复制引用
刘刚,靳立鹏,胡万君,刘云鹏,武卫革..基于混合有限元法的油浸式变压器稳态流-热耦合场并行计算方法[J].高电压技术,2024,50(5):2259-2269,11.基金项目
国家重点研发计划(2021YFB2401703) （2021YFB2401703）
河北省重点研发计划(20312101D) （20312101D）
中央高校基本科研业务费专项资金(2022MS073).Project supported by National Key R&D Program of China(2021YFB2401703),Key R&D Program of Hebei Province(20312101D),Fundamental Research Funds for the Central Universities(2022MS073). （2022MS073）
