基于能量摄动法的变压器短路阻抗有限元计算  

Finite Element Calculation of Transformer Short Circuit Impedance Based on Energy Perturbation Method

作　　者：郭健[1] 林鹤云[1] 徐子宏 金承祥[2] 

机构地区：[1]东南大学电气工程学院,210096 [2]中电电气集团,212211

出　　处：《电气应用》2007年第9期34-36,共3页Electrotechnical Application

基　　金：2005年江苏省科技攻关项目(BE2005086)

摘　　要：变压器短路电抗的计算方法中,基于二维有限元的漏磁场模型不能反映实际的变压器结构,鉴于此,本文采用了三维有限元模型,考虑了变压器铁心材料非线性,并根据变压器结构在几何上的对称性,在分析三维漏磁场时取1/4建立有限元模型。磁场后处理中,采用能量摄动法计算了变压器的短路阻抗,短路阻抗计算值与实验数据进行了比较,结果令人满意。The 2D leakage magnetic field finite element model for computing short circuit impedance of power transformer can not reflect the realstructure of transformer. In order to calculate the short circuit impedance of power transformer accurately, a 3D finite element model taking into account the magnetic nonlinearity of the core material is put forward. Considering the symmetry instructural, a quarter of the transformer is chosen as the model to be analyzed. In the post-process of magnetic field analysis, short circuit impedance is calculated by the energy perturbation method. This paper presents the results of extensive test verification performed on a number of models with excellent agreement.

关 键 词：变压器 短路阻抗 能量摄动 

分 类 号：TM401[电气工程—电器]