Comparison of Three Kinds of Magnetizing Inrush Current Suppression Measures for Transformer

WANG Wei; WEI Jufang; FANG Qiong; LIU Liqing; HE Siming; GUAN Yonggang; ZOU Jun

doi:10.13296/j.1001-1609.hva.2020.02.015

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Comparison of Three Kinds of Magnetizing Inrush Current Suppression Measures for Transformer

更新时间：2025-04-26

- Comparison of Three Kinds of Magnetizing Inrush Current Suppression Measures for Transformer
- High VoltageApparatus Vol. 56, Issue 2, Pages: 101-107(2020)
- 作者机构：
  
  1. 国网天津市电力公司电力科学研究院
  2. 国网天津市电力公司设备管理部
  3. 清华大学电机工程与应用电子技术系
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.02.015
  CLC： TM41
- Published：2020
- 稿件说明：
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[1]王伟,魏菊芳,方琼,刘力卿,何思名,关永刚,邹军.变压器3种励磁涌流抑制措施效果比较[J].高压电器,2020,56(02):101-107.

WANG Wei, WEI Jufang, FANG Qiong, et al. Comparison of Three Kinds of Magnetizing Inrush Current Suppression Measures for Transformer[J]. High voltageapparatus, 2020, 56(2): 101-107.
[1]王伟,魏菊芳,方琼,刘力卿,何思名,关永刚,邹军.变压器3种励磁涌流抑制措施效果比较[J].高压电器,2020,56(02):101-107. DOI： 10.13296/j.1001-1609.hva.2020.02.015.

WANG Wei, WEI Jufang, FANG Qiong, et al. Comparison of Three Kinds of Magnetizing Inrush Current Suppression Measures for Transformer[J]. High voltageapparatus, 2020, 56(2): 101-107. DOI： 10.13296/j.1001-1609.hva.2020.02.015.

摘要

变压器空载合闸过程中容易产生励磁涌流

对变压器和电网中其他设备正常运行都具有很大威胁。文中首先对变压器励磁涌流产生的原理进行了分析

推导了单相变压器励磁涌流的近似表达式

并介绍了改进Jiles-Atherton（J-A）磁滞模型的理论以及使用J-A模型计算励磁涌流的方法。随后

基于PSCAD仿真软件

使用改进J-A模型

对预先消磁、合闸电阻、选相合闸3种变压器励磁涌流抑制措施进行了仿真

并分析了方法的效果及适用情形

为抑制变压器励磁涌流时方法的选择提供了参考。

Abstract

It is easy to generate magnetizing inrush current during the no-load closing process of transformers

which poses a great threat to the transformer and other equipment in the power grid.In this paper

the principle of magnetizing inrush current is analyzed and the approximate expression of single-phase transformer excitation inrush current is derived.The theory of improved Jiles-Atherton（J-A） hysteresis model and the method of calculating magnetizing inrush current using J-A model are introduced.Then

based on the PSCAD simulation software

the improved J-A hysteresis model is used to simulate the effect of pre-demagnetization

closing resistance and phase-selection closing strategy onmagnetizing inrush current

and theapplicable situations of the methods are analyzed to provide references for the selection of methods.

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