Analysis and Experience of a Fault in a 330 kV Power Transformer

LI Yi-cang

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Analysis and Experience of a Fault in a 330 kV Power Transformer

更新时间：2025-04-26

- Analysis and Experience of a Fault in a 330 kV Power Transformer
- High VoltageApparatus Issue 1, Pages: 91-94(2008)
- 作者机构：
  
  汉中供电局,陕西,汉中,723000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM41
- Published：2008
- 稿件说明：
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[1]李义仓.一起330 kV电力变压器故障的分析及经验[J].高压电器,2008(01):91-94.

LI Yi-cang. Analysis and Experience of a Fault in a 330 kV Power Transformer[J]. High voltageapparatus, 2008, (1): 91-94.
[1]李义仓.一起330 kV电力变压器故障的分析及经验[J].高压电器,2008(01):91-94. DOI：

LI Yi-cang. Analysis and Experience of a Fault in a 330 kV Power Transformer[J]. High voltageapparatus, 2008, (1): 91-94. DOI：

摘要

通过对一起330 kV、240 MV.A变压器故障过程的分析

表明局部放电的能量密度虽不大

但若进一步发展会导致设备的击穿或损坏。无励磁分接开关缺陷严重性有时难以通过色谱跟踪试验确定

直流电阻测试对于发现此类缺陷也有很大的局限性。同时提出了新的变压器故障的诊断方法。

Abstract

Through the analysis of a fault in 330 kV

240 MV·A transformer

it was shown that further development of partial discharge（PD） with even relatively smaller PD energy density will lead to breakdown or damage in equipment

off-circuit tap-changer defect tracking test was sometimes difficult to determine the chromatography

and DC resistance test is also limited for the detection of such defects.Therefore

a new transformer fault diagnosis method was proposed.

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