基于温度流体场耦合的油浸式变压器热点温度计算  

Hot Spot Temperature Calculation of Oil Immersed Transformer Based on Thermal Fluid Field Coupling

作　　者：张健 胡玉耀 宋士瞻 刘玉娇 咸日常[2] ZHANG Jian;HU Yuyao;SONG Shizhan;LIU Yujiao;XIAN Richang(State Grid Zaozhuang Power Supply Company,Zaozhuang 277800,China;College of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]国网山东省电力公司枣庄供电公司,山东枣庄277800 [2]山东理工大学电气与电子工程学院,山东淄博255000

出　　处：《电工技术》2021年第13期77-80,共4页Electric Engineering

基　　金：国网山东省电力公司科技项目(编号5206101801UT)。

摘　　要：提出了一种10 kV油浸式变压器热点温度的三维温度流体场耦合分析方法,仿真中考虑变压器内部金属结构件对绕组热点温度的影响,利用变压器空载试验和负载试验确定变压器内部总损耗,基于有限体积法,对变压器温度流体场进行计算,进而获取变压器绕组热点温度。绕组热点温度计算结果与预埋光纤测温系统的变压器温升试验结果相吻合,最大误差不超过3℃,验证了该方法的有效性和准确性。In this paper,a three-dimensional fluid temperature field coupling analysis method for the hot spot temperature of 10 kV oil immersed transformer is proposed.In the simulation,the influence of the metal structure of the transformer on the winding hot spot temperature is considered.The total internal loss of the transformer is determined by the no-load test and load test of the transformer.Based on the finite volume method,the temperature fluid field of the transformer is calculated and the transformer hot spot temperature obtained.The calculated results of winding hot spot temperature are in good agreement with the transformer temperature rise test results of embedded optical fiber temperature measurement system.The maximum error is less than 3℃,which verifies the effectiveness and accuracy of the analysis method in this paper.

关 键 词：流体温度场耦合分析 油浸式变压器 热点温度 10 kV油浸式变压器 

分 类 号：TM411[电气工程—电器]