Models for capacitive effects in iron core transformers

被引：6

作者：

Ioan, Daniel ^{[1
]}

Munteanu, Irina ^{[1
]}

机构：

[1] `Politehnica' Univ of Bucharest, Romania

来源：

IEEE Transactions on Magnetics | 2000年 / 36卷 / 4 I期

关键词：

Electric transformers - Mathematical models - Numerical analysis - Transients;

D O I：

10.1109/20.877608

中图分类号：

学科分类号：

摘要：

The paper presents an efficient modeling technique for iron-core coils and transformers based on a separation of the nonlinear inductive effects from the linear capacitive effects. The magnetic field is numerically analyzed neglecting the displacement currents. The distributed capacitive effects in the insulation between coils are concentrated in an `Extended II scheme,' an infinite circuit which is optimally reduced to a finite one. The separately extracted models are integrated in a common discrete (lumped) system. This global model obtained by postprocessing the numerical field solution was used to study the transmission of atmospheric lightning overvoltages to the secondary windings of power transformers.

引用

页码：990 / 994