Analysis of Transient Force of Power Transformer Winding in Short Circuit

LI Debo; ZHANG Bo; ZANG Chunyan; ZHOU Jielian; FENG Yongxin

doi:10.13296/j.1001-1609.hva.2019.01.014

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Analysis of Transient Force of Power Transformer Winding in Short Circuit

更新时间：2025-04-26

- Analysis of Transient Force of Power Transformer Winding in Short Circuit
- High VoltageApparatus Vol. 55, Issue 1, Pages: 87-94(2019)
- 作者机构：
  
  1. 广东电网有限责任公司电力科学研究院
  2. 武汉智能装备工业技术研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.01.014
  CLC： TM41
- Published：2019
- 稿件说明：
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[1]李德波,张波,臧春艳,周杰联,冯永新.电力变压器绕组短路瞬态受力分析[J].高压电器,2019,55(01):87-94.

LI Debo, ZHANG Bo, ZANG Chunyan, et al. Analysis of Transient Force of Power Transformer Winding in Short Circuit[J]. High voltageapparatus, 2019, 55(1): 87-94.
[1]李德波,张波,臧春艳,周杰联,冯永新.电力变压器绕组短路瞬态受力分析[J].高压电器,2019,55(01):87-94. DOI： 10.13296/j.1001-1609.hva.2019.01.014.

LI Debo, ZHANG Bo, ZANG Chunyan, et al. Analysis of Transient Force of Power Transformer Winding in Short Circuit[J]. High voltageapparatus, 2019, 55(1): 87-94. DOI： 10.13296/j.1001-1609.hva.2019.01.014.

摘要

以型号为SFPSZ7-150000/220的变压器为例

建立三维三相磁—结构耦合模型

在三相短路的情况下

利用Ansys Maxwell软件进行瞬态电磁场仿真分析

分析绕组的单匝线圈的瞬态轴向力和辐向力

得出了绕组线圈随时间变化的瞬态轴向力和辐向力曲线

并总结了对应的规律:在A、B、C三相的高压绕组当中

位于A相第10分区的单匝线圈所受到的辐向合力为最大;在A、B、C三相的低压绕组当中

位于第7分区的三相绕组线圈中

B相绕组线圈受到的辐向力最小等这些结论。这将为对变压器在短路冲击下的累积效应、提高变压器的抗短路强度等相关研究提供有力的依据。

Abstract

Taking the transformer model SFPSZ7-150000/220 as an example

the three-dimensional three-phasemagneto-structure coupling model is established. Under the condition of three-phase short circuit

the transient elec-tromagnetic field simulation analysis is carried out by Ansys Maxwell software to analyze the instantaneous windingof the winding. The axial force and the radial force of the winding coil are obtained with time

and the correspondinglaw is summarized: in the high voltage winding of A

B and C

in the A

C three-phase low-voltage winding

inthe three-phase winding coil

the B-phase winding coil is the direction of the radiation force and so on. This will pro-vide a strong basis for the research on the cumulative effect of the transformer under the impact of short circuit and the improvement of the short circuit resistance of the transformer.

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