油浸式变压器二维电磁-流体-温度场耦合分析方法研究

发布时间：2018-03-06 01:13

本文选题：油浸式变压器　切入点：多物理场耦合　出处：《科学技术与工程》2014年36期 　论文类型：期刊论文

【摘要】：介绍了一种基于有限元法的变压器二维电磁-流体-温度场耦合分析方法。通过建立变压器二维模型,采用有限元法求解变压器内磁通密度分布;并计算变压器铁心及绕组损耗。随后,采用多物理场间接耦合方法将损耗作为热源加载条件求解变压器流体-温度场,分析变压器内部油流速度及温度分布。对35 kV油浸式变压器进行二维电磁-流体-温度场分析,将温度仿真结果与经验公式的热点温度计算结果进行对比,验证了方法的有效性和正确性。
[Abstract]:This paper introduces a coupling analysis method of two dimensional electromagnetic fluid temperature field of transformer based on finite element method. The magnetic flux density distribution in transformer is solved by finite element method by establishing two dimensional model of transformer. The transformer core and winding losses are calculated. Then, the multi-physical field indirect coupling method is used to solve the fluid-temperature field of the transformer under the loading condition of the heat source. The velocity and temperature distribution of oil flow in transformer are analyzed. The electromagnetic fluid-temperature field of 35 kV oil-immersed transformer is analyzed, and the results of temperature simulation are compared with those of hot spot temperature calculated by empirical formula. The validity and correctness of the method are verified.
【作者单位】：武汉大学电气工程学院;国网山东省电力公司济南供电公司;国网电力科学研究院武汉南瑞有限责任公司;
【分类号】：TM411

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