油浸式变压器内部流场模拟及在线故障预测方法  

Internal Streaming Simulation of Oil-Immersed Transformers and On-Line Fault Prediction Method

作　　者：涂惟民[1] 崔国民[1] 李瑜[1] 胡向柏[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海市杨浦区200093

出　　处：《电网技术》2010年第5期195-200,共6页Power System Technology

基　　金：国家自然科学基金资助项目(20406011);上海市重点学科建设项目资助(S30503);上海市教育委员会发展基金(07ZZ85)~~

摘　　要：建立了油浸式变压器的物理模型和数学模型,采用Fluent软件对变压器内部的流动和传热进行了数值模拟,得到内部温度场和速度场的分布;在此基础上,通过内部特征点的选取,建立了特征点的温度变化与变压器不同故障的对应关系,提出一种基于特征点温度监视的油浸式变压器在线故障预测方法,可以迅速、准确地预测故障发生部位。The physical model and mathematical model of oil-immersed power transformer are built. The numerical simulation of streaming and heat transfer inside the power transformer is performed to attain the distribution of internal temperature field and velocity field of the transformer. On this basis, by means of choosing internal characteristic points, the corresponding relations between the temperature variation of characteristic points and various internal faults are established, and a on-line fault prediction method for oil-immersed power transformer based on temperature monitoring of characteristic points, by which the faulty position can be accurately predicted, is proposed.

关 键 词：油浸式电力变压器 数值模拟 特征点温度 在线故障预测 

分 类 号：TM411[电气工程—电器]