基于温度流场仿真的10kV油浸式变压器波纹油箱结构优化分析  

Structural Optimization Analysis of Corrugated Oil Tank of 10kV Oil Immersed Transformer Based on Thermal-fluid Field Simulation

作　　者：高浩 潘明 顾小虎 张兴旺 GAO Hao;PAN Ming;GU Xiao-hu;ZHANG Xing-wang(NARI Group Co.,Ltd./State Grid Electric Power Research Institute Co.,Ltd.,Nanjing 211103,China;Shanghai Zhixin Intelligent Electric Co.,Ltd.,Shanghai 200335,China)

机构地区：[1]南瑞集团有限公司/国网电力科学研究院有限公司,江苏南京211103 [2]上海置信电气有限公司,上海200335

出　　处：《变压器》2022年第9期30-35,共6页Transformer

摘　　要：本文基于温度流场仿真对波纹油箱结构进行优化,并试验验证了优化结果。构建了变压器三维仿真计算模型,对油箱波纹片在不同间距、数量和深度条件下的温度流体场分别进行了计算,同时采用短路法温升试验对计算结果进行了验证,计算与试验结果最大误差不超过5℃,验证了文中变压器温度流体场仿真模型的有效性及准确性,为波纹油箱的结构优化提供了依据。结构优化结果表明,对于10kV油浸式变压器波纹油箱,可通过减小波纹片间距、增加波纹片数量的方式提高散热效率,本文中顶层油温升降低约4℃,绕组平均温升降低约3℃;也可以通过减小间距、增加数量和减小波纹片深度的方式,在保证原成本、温升一致的情况下,有效减小变压器整体体积,本文中整体体积减小约11%。The structure of corrugated fuel tank is optimized based on thermal-fluid flow field simulation,and the optimization results are verified by experiments.Transformer 3d simulation model was established and the temperature-fluid fields of corrugated sheets in oil tank were calculated under different spacing,number and depth.At the same time,the short-circuit temperature rise test is used to verify the calculated results.Calculation and test results of maximum error less than 5℃,which verify the effectivenessand the accuracy of the transformer temperature-fluid field simulation model.The results of structural optimization show that:for 10kV oilimmersed transformer,the heat dissipation efficiency can be improved by reducing the spacing between corrugated sheets and increasing the number of corrugated sheets,and the top oil temperature rise in this paper is reduced by about 4℃,the average temperature rise of winding is about 3℃.The cost and temperature rise can also be guaranteed by reducing the spacing,increasing the number and reducing the depth of the corrugated sheets,and the overall volume of the transformer is reduced,the volume in this paper is reduced by 11%.

关 键 词：油浸式变压器 温度流体场仿真 波纹油箱 温升 

分 类 号：TM403[电气工程—电器]