Deformation State Analysis of High-speed Switch Type Variable Impedance Energy-saving Transformer Winding

DU Wei; YANG Huifeng; CHE Junlu; HE Haoyan; WANG Shuhong; WU Xutao; GAO Bo

doi:10.13296/j.1001-1609.hva.2017.01.011

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Deformation State Analysis of High-speed Switch Type Variable Impedance Energy-saving Transformer Winding

更新时间：2025-04-26

- Deformation State Analysis of High-speed Switch Type Variable Impedance Energy-saving Transformer Winding
- High VoltageApparatus Vol. 53, Issue 1, Pages: 64-70(2017)
- 作者机构：
  
  1. 国网电力科学研究院武汉南瑞有限责任公司
  2. 国网宁夏电力公司
  3. 西安交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.01.011
  CLC： TM41
- Published：2017
- 稿件说明：
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[1]杜玮,杨慧峰,车俊禄,贺好艳,王曙鸿,吴旭涛,高博.快速开关型变阻抗节能变压器绕组变形状态分析[J].高压电器,2017,53(01):64-70.

DU Wei, YANG Huifeng, CHE Junlu, et al. Deformation State Analysis of High-speed Switch Type Variable Impedance Energy-saving Transformer Winding[J]. High VoltageApparatus, 2017, 53(1): 64-70.
[1]杜玮,杨慧峰,车俊禄,贺好艳,王曙鸿,吴旭涛,高博.快速开关型变阻抗节能变压器绕组变形状态分析[J].高压电器,2017,53(01):64-70. DOI： 10.13296/j.1001-1609.hva.2017.01.011.

DU Wei, YANG Huifeng, CHE Junlu, et al. Deformation State Analysis of High-speed Switch Type Variable Impedance Energy-saving Transformer Winding[J]. High VoltageApparatus, 2017, 53(1): 64-70. DOI： 10.13296/j.1001-1609.hva.2017.01.011.

摘要

电力变压器短路故障产生的短路冲击会造成绕组变形

限制系统短路电流对降低变压器绕组动态变形意义重大。文中以110 kV电压等级的三绕组电力变压器为例

中压绕组发生出口短路故障时

基于磁—力学耦合场研究方法

对变阻抗变压器和常规变压器绕组动态变形进行数值分析。变阻抗变压器的研究包括变压器本体和限流电抗器2部分

分析了短路电流作用下

变压器绕组和限流电抗器线圈的变形、动态应力、位移。常规变压器和变阻抗变压器绕组变形的对比可得变阻抗变压器变形量较小。分析结果为变阻抗变压器绕组变形状态评估提供参考依据。

Abstract

The short-circuit impulse produced by power transformer short-circuit fault

will cause the transformer windings deformation. Therefore

it is significant to take effective measures for the purpose of limiting short-cir-cuit current to a reasonable and low level. In this paper

based on the magnetic-mechanics coupling field

the threewinding transformer of 110 kV voltage levels of windings deformation is analyzed when the threephase short-circuit fault occurs at the location of medium-voltage winding. The variable impedance energysaving trans-former

which is composed of the main body of the transformer and the current-limiting reactor

can limit fault current when the system of short-circuit fault occurs. The dynamic deformation of the body of transformer and current-limiting reactor are analyzed

containing the stress and displacement after short-circuit fault occurs.Com-pared with the conventional transformer

the maximum of windings deformation and stress of variable impedance transformer is smaller. The research results provide reference for the evaluation of variable impedance transformer winding deformation.

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