基于流固耦合分析的干式变压器温度场数值分析  

Numerical simulation of dry type transformer temperature field based on the fluid solid coupling analysis

作　　者：蔡定国 姚育成[1,2,3] 徐业彬[2] 唐金权 

机构地区：[1]明珠电气有限公司,广东广州511400 [2]华中科技大学光电子科学与工程学院,湖北武汉430074 [3]湖北工业大学理学院,湖北武汉430068

出　　处：《华北电力大学学报（自然科学版）》2012年第2期34-38,共5页Journal of North China Electric Power University：Natural Science Edition

摘　　要：壁面空气对流换热分析是影响环氧浇注干式变压器温度场数值模拟准确与否的主要因素。为了模拟对流换热过程,摆脱气道参数对变压器温升计算结果的影响,从空气质量、动量、能量守恒方程出发,建立干式变压器流固耦合场数值模型,采用有限差分法对温度场进行了计算,并与实验结果进行了比较,模拟结果与实验吻合较好。考虑空气流场的流固耦合模型能准确分析干式变压器工作中的温升问题,可分析变压器内部温度分布规律及影响温度分布的因素,指导变压器优化设计。The analyzing of the wall and air convection heat exchange greatly affects accuracy of the numerical simulation of the cast-resin dry type transformer temperature field.In order to get rid of the influence of the air way parameters and simulate the convection heat exchange physics process accurately,the numerical model of the dry type transformer fluid solid coupling field is set up from the continuity,momentum and energy conservation equations.The temperature field is calculated by finite difference method and compared to the experiment.The simulation results fit the experiment well.The temperature rise and its influence factors may be analyzed by the fluid solid coupling model considering the air flow.It provides guidance to the transformer optimal design.

关 键 词：干式变压器 温度场 数值分析 流固耦合 有限差分法 

分 类 号：TM412[电气工程—电器]