Analysis and Countermeasure of Mal-operation in Differential Protection Caused by Magnetizing Inrush

YUE Zhi-gang1; YANG Guo-wang2; QU Yan-hua2

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Analysis and Countermeasure of Mal-operation in Differential Protection Caused by Magnetizing Inrush

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- Analysis and Countermeasure of Mal-operation in Differential Protection Caused by Magnetizing Inrush
- High VoltageApparatus Issue 1, Pages: 48-50(2005)
- 作者机构：
  
  1.   盐城市供电公司
  2.   华北电力大学电力工程系
  3.   华北电力大学电力工程系江苏盐城224001
  4.   河北保定071003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM411
- Published：2005
- 稿件说明：
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[1]岳志刚,杨国旺,曲艳华.励磁涌流对差动保护的影响及其对策[J].高压电器,2005(01):48-50.

YUE Zhi-gang1, YANG Guo-wang2, QU Yan-hua2. Analysis and Countermeasure of Mal-operation in Differential Protection Caused by Magnetizing Inrush[J]. High voltageapparatus, 2005, (1): 48-50.
[1]岳志刚,杨国旺,曲艳华.励磁涌流对差动保护的影响及其对策[J].高压电器,2005(01):48-50. DOI：

YUE Zhi-gang1, YANG Guo-wang2, QU Yan-hua2. Analysis and Countermeasure of Mal-operation in Differential Protection Caused by Magnetizing Inrush[J]. High voltageapparatus, 2005, (1): 48-50. DOI：

摘要

为了解决变压器差动保护由于励磁涌流而经常误动作的问题

对励磁涌流进行了特征分析

指出当前防止差动保护误动作原理的不足

阐述了利用磁通特性原理区分励磁涌流的方法

分析结果表明

该方法能够可靠地识别变压器内部故障。

Abstract

In order to resolve the mal-operation problem in differential protection caused by magnetizing inrush

this paper analyzes the characteristic of magnetizing inrush

points out the shortcoming in the principle of the differential protection for anti-malfunction

puts forward a method for distinguishing magnetizing inrush based on the magnetic flux characteristics principle. The results of analysis demonstrate that the method is able to identify the internal fault reliably.

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