摘要
针对变压器内部产热散热的对流换热过程,并考虑到变压器内部系统的非齐次性,采用有限体积法(FVM)将支配流动与传热的控制偏微分方程对微小控制体积积分,构造一组离散的控制方程,结合系统的初始条件和边界条件,求解一类自然油循环电力变压器温度场,仿真计算绕组温度分布。并与实验室温升用试验变压器不同条件下的实测数据进行对比验证,结果表明基于FVM的计算方法具有平均相对误差5.8%的精度,能较好地计算变压器绕组温度分布。
Based on the convection heat transfer process of power transformer internal system and its non-homogeneity,the FVM(Finite Volume Method) is applied to construct a set of discrete control equations by calculating the integral of partial differential equation on small control volume for flow and heat transfer control.The temperature field of its natural cycle oil is solved combined with its initial and boundary conditions and the temperature distribution of its windings is simulated.Comparison with the measured data of the prototype power transformer under lab tests with different loading profiles shows that,the winding temperature distribution calculated by the proposed FVM-based method has an average relative error of 5.8 %.
出处
《电力自动化设备》
EI
CSCD
北大核心
2011年第6期23-27,共5页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(50777069)
国家重点基础研究发展计划项目(973项目)(2009CB724506)~~
关键词
电力变压器
有限体积法
绕组
温度分布
仿真
power transformers
FVM
winding
temperature distribution
computer simulation
作者简介
陈伟根(1967-).男,浙江绍兴人,长江学者奖励计划特聘教授.博士研究生导师.博士.主要从事电气设备在线智能监测及诊断技术研究(E-mail:weigeneh@vip.sina.com);
苏小平(1984-),男,湖北石首人,博士研究生.主要从事电气设备在线智能监测及诊断技术研究(E-mail:cqusuxiaoping@gmail.com)