Abstract

A review on fault detection and condition monitoring of power transformer

Highlights

  • IntroductionPaper quality it reduces transformer lifetime. Likewise, the transformer condition is affected when oil gets deteriorated by moisture and oxidation (Jan et al, 2015; Mandlik and Ramu, 2014)

  • Real-time monitoring of transformers ensures equipment safety and guarantees the necessary intervention in precise time thereby reducing the risk of non-schedule energy blackouts

  • Incipient faults are divided into two main categories namely thermal fault and electrical fault

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Summary

Introduction

Paper quality it reduces transformer lifetime. Likewise, the transformer condition is affected when oil gets deteriorated by moisture and oxidation (Jan et al, 2015; Mandlik and Ramu, 2014). The degradation cellulose paper and oil contamination insulation in the transformer with time or any abnormal conditions are the primary causes of these incipient faults (Martin et al, 2014; Wang and Butler, 2002). Certain significant gases are produced by the breakdown of an insulation which are related with particular faults (Gibeault and Kirkup, 1995) These gases are methane (CH4), ethane(C2H6), ethane (C2H4), ethyne (C2H2), hydrogen (H2), carbon dioxide (CO2) and carbon monoxide(CO) (Fofana et al, 2011; Lelekakis et al, 2012; Morais and Rolim, 2006; Su et al, 2000).

Critical analysis of chemical techniques for detection of incipient faults
Key gas ratio method
Rogers ratio
Logarithmic nomo graph
Duval triangle method
Gas chromatography
Hydrogen online monitoring
Photo acoustic spectroscopy
Artificial intelligence techniques
Artificial neural networks
An expert system and fuzzy logic
Electrical diagnostic techniques
Recovery voltage method
Furan analysis
Conclusion
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