A METHOD OF ESTIMATING RESIDUAL MAGNETISM IN IRON CORE OF TRANSFORMERS

ZHOU Jian-ping; LUO JianState-level Key Laboratory of Power Transmission and Distribution Equipments as well as System Safety and New Technology

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A METHOD OF ESTIMATING RESIDUAL MAGNETISM IN IRON CORE OF TRANSFORMERS

Thermal Power Generation Vol. 39, Issue 3, Pages: 61-64(2010)

更新时间：2025-09-28

- A METHOD OF ESTIMATING RESIDUAL MAGNETISM IN IRON CORE OF TRANSFORMERS
- 作者机构：
  
  重庆大学输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM401.1
- Published：2010
- 稿件说明：
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ZHOU Jian-ping, LUO JianState-level Key Laboratory of Power Transmission and Distribution Equipments as well as System Safety and New Technology. A METHOD OF ESTIMATING RESIDUAL MAGNETISM IN IRON CORE OF TRANSFORMERS[J]. Thermal Power Generation, 2010, 39(3): 61-64.
DOI：

ZHOU Jian-ping, LUO JianState-level Key Laboratory of Power Transmission and Distribution Equipments as well as System Safety and New Technology. A METHOD OF ESTIMATING RESIDUAL MAGNETISM IN IRON CORE OF TRANSFORMERS[J]. Thermal Power Generation, 2010, 39(3): 61-64. DOI：

摘要

从变压器励磁涌流产生的机理出发

分析变压器的饱和过程。通过理论推导和大量仿真试验得出变压器在不同合闸角度下的饱和电流

估算出在去磁阶段内以及剩磁阶段内饱和电流与剩磁及合闸角的经验公式

进而得出变压器铁芯内剩磁的实用计算公式。

Abstract

Starting from the mechanism of inrush-current resulted from excitation of transformers

the saturation preocess of transformers has been analysed.Through theoritical deduction and large amount of emulation tests

the saturated curren at different switching-in angles of the transformer has been obtained

and the expirical formulae between the saturated current and the residual magnetism

as well as between the saturated current and the switching-in angle

during demagnetizing stage and residual magnetizing-stage

being estimated

obtaining further the practical calculation formula of residual magnetism in iron core of the transformers.

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