Analysis of a 500 kV Transformer Inner Short Circuit Damage

YANG Jing1; SHENG Hui-hui2; WEI Xiao-wei3

doi:10.13296/j.1001-1609.hva.2010.06.016

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Analysis of a 500 kV Transformer Inner Short Circuit Damage

更新时间：2025-04-26

- Analysis of a 500 kV Transformer Inner Short Circuit Damage
- High VoltageApparatus Vol. 46, Issue 6, Pages: 74-78(2010)
- 作者机构：
  
  1. 华北电网有限公司
  2. 北京市电力公司
  3. 北京超高压公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2010.06.016
  CLC： TM407
- Published：2010
- 稿件说明：
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[1]杨静,盛慧慧,魏晓伟.500 kV变压器内部短路损坏事故分析[J].高压电器,2010,46(06):74-78.

YANG Jing1, SHENG Hui-hui2, WEI Xiao-wei3. Analysis of a 500 kV Transformer Inner Short Circuit Damage[J]. High voltageapparatus, 2010, 46(6): 74-78.
[1]杨静,盛慧慧,魏晓伟.500 kV变压器内部短路损坏事故分析[J].高压电器,2010,46(06):74-78. DOI： 10.13296/j.1001-1609.hva.2010.06.016.

YANG Jing1, SHENG Hui-hui2, WEI Xiao-wei3. Analysis of a 500 kV Transformer Inner Short Circuit Damage[J]. High voltageapparatus, 2010, 46(6): 74-78. DOI： 10.13296/j.1001-1609.hva.2010.06.016.

摘要

针对一起罕见的500 kV变压器匝间短路事故

通过对事故前后的油色谱、局部放电在线监测以及最终解体分析

得出事故是由于高压绕组发生了匝间短路。对事故中硫化铜现象进行了绝缘影响分析

从设备焊接、绝缘质量、外部运行环境等方面分析事故原因

提出了预防措施

供电力设备运行及生产企业借鉴。

Abstract

An accident of 500 kV transformer inner short circuit is explored by the change analysis of the oil chromatogram after accident

the local discharge online monitoring

and ultimate degradation analysis.It is found that this accident is caused by inner short circuit of high voltage winding.The insulation effect analysis of the phenomenon of Cu2S in the accident is performed.The accident analysis also includes soldering quality

insulation quality

and working environment

etc.Preventing measure is hence suggested.

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Related Institution

School of Electrical Engineering, Shanghai University of Electric Power

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