Defect Diagnosis and Treatment of a New 500 kV Transformer with Abnormal DGA Data

HU Ran; LUO Wei; WANG Ruizhen; ZHOU Kai

doi:10.13296/j.1001-1609.hva.2015.05.026

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Defect Diagnosis and Treatment of a New 500 kV Transformer with Abnormal DGA Data

更新时间：2025-04-26

- Defect Diagnosis and Treatment of a New 500 kV Transformer with Abnormal DGA Data
- High VoltageApparatus Vol. 51, Issue 5, Pages: 139-143(2015)
- 作者机构：
  
  1. 国网湖北省电力公司电力科学研究院
  2. 国家电网公司高压电气设备现场试验技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.05.026
  CLC： TM407
- Published：2015
- 稿件说明：
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[1]胡然,罗维,王瑞珍,周凯.一台新投运500kV变压器油色谱异常的缺陷诊断和处理[J].高压电器,2015,51(05):139-143.

HU Ran, LUO Wei, WANG Ruizhen, et al. Defect Diagnosis and Treatment of a New 500 kV Transformer with Abnormal DGA Data[J]. High voltageapparatus, 2015, 51(5): 139-143.
[1]胡然,罗维,王瑞珍,周凯.一台新投运500kV变压器油色谱异常的缺陷诊断和处理[J].高压电器,2015,51(05):139-143. DOI： 10.13296/j.1001-1609.hva.2015.05.026.

HU Ran, LUO Wei, WANG Ruizhen, et al. Defect Diagnosis and Treatment of a New 500 kV Transformer with Abnormal DGA Data[J]. High voltageapparatus, 2015, 51(5): 139-143. DOI： 10.13296/j.1001-1609.hva.2015.05.026.

摘要

变压器油色谱分析是发现变压器内部早期潜伏性故障的重要手段

笔者针对某500 kV变压器在投运初期发生的油色谱异常情况

结合变压器局部放电带电检测和故障定位

综合分析判断了缺陷性质和部位

为随后变压器的内部检查和消缺处理提供了有力的指导意见。内部检查结果与色谱分析、局放定位结果相吻合

充分验证了故障诊断方法的有效性和正确性

为大型变压器油色谱异常后的故障诊断和缺陷处理提供了经验。

Abstract

Dissolved gas analysis（DGA）plays an important role in transformer latent defect diagnosis. Based on a new 500 kV transformer with abnormal DGA data

combined with on-line PD detection and ultrasonic location

the defect properties and locations are analyzed and diagnosed synthetically

which provides convincing guidance for succedent internal check and defects elimination. The actual results coincide well with the preceding analysis

which have fully confirmed the availability and validity of the defect diagnosis methods

and provide some useful experiences for defect diagnosis of large transformers.

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