Diagnosis and Analysis of Nearby Short-circuit Impact on Transformer

ZOU Guo-ping; HE Wen-lin; DONG Xue-song; LI Chen; FU Bao-liang

doi:10.13296/j.1001-1609.hva.2013.12.018

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Diagnosis and Analysis of Nearby Short-circuit Impact on Transformer

更新时间：2025-04-26

- Diagnosis and Analysis of Nearby Short-circuit Impact on Transformer
- High VoltageApparatus Vol. 49, Issue 12, Pages: 95-98+103(2013)
- 作者机构：
  
  1. 浙江省电力公司电力科学研究院
  2. 国家电网交流建设分公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.12.018
  CLC： TM407
- Published：2013
- 稿件说明：
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[1]邹国平,何文林,董雪松,李晨,付宝良.一起变压器近区短路冲击的诊断与分析[J].高压电器,2013,49(12):95-98+103.

ZOU Guo-ping, HE Wen-lin, DONG Xue-song, et al. Diagnosis and Analysis of Nearby Short-circuit Impact on Transformer[J]. High voltageapparatus, 2013, 49(12): 95-98+103.
[1]邹国平,何文林,董雪松,李晨,付宝良.一起变压器近区短路冲击的诊断与分析[J].高压电器,2013,49(12):95-98+103. DOI： 10.13296/j.1001-1609.hva.2013.12.018.

ZOU Guo-ping, HE Wen-lin, DONG Xue-song, et al. Diagnosis and Analysis of Nearby Short-circuit Impact on Transformer[J]. High voltageapparatus, 2013, 49(12): 95-98+103. DOI： 10.13296/j.1001-1609.hva.2013.12.018.

摘要

近区短路冲击是变压器损坏的重要原因

诊断变压器短路冲击后的受损情况并确定检修策略具有重要的意义。介绍了一起变压器近区短路故障导致绕组严重变形的事故。通过对变压器油色谱、三相运行电流、短路阻抗、直流电阻、电容量、频响曲线等数据的综合分析确定了变压器绕组发生严重变形。随后的返厂解体证实了诊断分析方法的有效性。

Abstract

Nearby short-circuit impact is the main reason of transformer damage

so diagnosing the transformer’s status and choosing suitable management strategy are significant. This paper introduces a transformer accident of winding severe deformation caused by nearby short-circuit impact. By analyzing the dates of oil chromatographic

3 phases’ operation currents

short impedance

DC resistance

capacitance and frequency response curves

transformer winding deformation is conformed. The succeeding transformer disassembling indicates the effectiveness of diagnosis and analysis.

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Influencing Factors on Deformation Diagnosis of Transformer Windings

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