Comparison Research on Leakage Magnetic Field and Short-circuit Force of Transformer Windings Under Different Models

doi:10.13296/j.1001-1609.hva.2016.05.014

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Comparison Research on Leakage Magnetic Field and Short-circuit Force of Transformer Windings Under Different Models

更新时间：2025-04-26

- Comparison Research on Leakage Magnetic Field and Short-circuit Force of Transformer Windings Under Different Models
- High VoltageApparatus Vol. 52, Issue 5, Pages: 85-89+95(2016)
- 作者机构：
  
  1. 云南电力试验研究院(集团)有限公司电力研究院
  2. 华中科技大学电气与电子工程学院
  3. 特高压工程技术(昆明广州)国家实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.05.014
  CLC： TM41
- Published：2016
- 稿件说明：
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[1]徐肖伟,钱国超,邹德旭,王景林,臧春艳,李冰阳,罗兵,张福增.不同模型下变压器绕组漏磁场及短路力的比对研究[J].高压电器,2016,52(05):85-89+95.

Comparison Research on Leakage Magnetic Field and Short-circuit Force of Transformer Windings Under Different Models[J]. High voltageapparatus, 2016, 52(5): 85-89+95.
[1]徐肖伟,钱国超,邹德旭,王景林,臧春艳,李冰阳,罗兵,张福增.不同模型下变压器绕组漏磁场及短路力的比对研究[J].高压电器,2016,52(05):85-89+95. DOI： 10.13296/j.1001-1609.hva.2016.05.014.

Comparison Research on Leakage Magnetic Field and Short-circuit Force of Transformer Windings Under Different Models[J]. High voltageapparatus, 2016, 52(5): 85-89+95. DOI： 10.13296/j.1001-1609.hva.2016.05.014.

摘要

变压器抗短路能力不足

严重影响了电网的运行安全

因而针对变压器绕组抗短路能力开展抗短路校核工作很有必要。目前在变压器绕组的理论建模方面

较多使用的是二维轴对称分区模型

少量也有使用具体的线饼模型。为了对比两种模型的仿真结果

文中首先分析了分区模型和线饼模型的特点

然后以一台220 k V三绕组的电力变压器为例

在ANSYS中计算和比较了这两种模型下绕组中的漏磁场及短路电动力的分布情况

结果显示两种模型计算有一定差异

但整体分布趋于一致。因此在精度要求不高的情况下

可以用分区模型代替线饼模型进行绕组漏磁场分析。

Abstract

The electric power system fault caused by transformer anti-short circuit capability’s insufficient seriously affect the safety of the power grid

so to carry out anti-short circuit capability reinforcement of transformer is necessary.At present

2-D axisymmetric partition model is widely used

as well as a small amount of 2-D bread line model in the theoretical model of transformer winding. In order to compare the simulation results of the two models

the characteristics of 2-D partition model and 2-D bread line model are introduced. And illustrated by an example of 220 k V three winding transformer

the transformer short-circuit current under different kinds of short circuit conditions are analyzed.And then the two kinds of modeling of winding’s leakage magnetic field and short-circuit electro dynamic force distribution are calculated and compared in the ANSYS. The results show that two kinds of model simulation have a certain difference but an uniformity overall distribution. So when it does not require high accuracy of leakage magnetic

2-D partition model can be used instead of bread line model in the analysis of winding leakage magnetic field.

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