Journal ArticleDOI
Improving the reliability of transformer gas-in-oil diagnosis
Michel Duval,James J. Dukarm +1 more
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In this article, the measurement inaccuracy problem was examined in detail using recent CIGRE data and proper allowance for this inaccuracy can improve transformer condition assessment and diagnosis by DGA.Abstract:
Dissolved gas analysis (DGA) is widely used to detect incipient faults in oil-filled electrical equipment There is always some degree of inaccuracy in laboratory dissolved-gas measurements, especially at low gas concentrations, which affects gas ratios and other diagnostic calculations This paper examines the measurement inaccuracy problem in detail using recent CIGRE data It shows how proper allowance for this inaccuracy can improve transformer condition assessment and diagnosis by DGAread more
Citations
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Journal ArticleDOI
50 years in the development of insulating liquids
TL;DR: The role of electrical insulation is critical for the proper operation of electrical equipment and it is therefore essential to dissipate the heat generated by the energy losses, especially under high load conditions.
Journal ArticleDOI
A review of dissolved gas analysis measurement and interpretation techniques
TL;DR: Dissolved gas analysis (DGA) has been used to assess the condition of power transformers as mentioned in this paper, which uses the concentrations of various gases dissolved in the transformer oil due to decomposition of the oil and paper insulation.
Journal ArticleDOI
A Review of Dissolved Gas Analysis in Power Transformers
TL;DR: In this article, the authors compared the effectiveness of different decomposition gas analysis methods for interpreting transformer conditions and concluded that decomposition is a sensitive and reliable technique for detecting incipient fault conditions in oil-immersed transformers.
Journal ArticleDOI
Dissolved gas analysis technique for incipient fault diagnosis in power transformers: A bibliographic survey
S Singh,M N Bandyopadhyay +1 more
TL;DR: In this paper, a bibliographic survey over the last 40 years on the research and development and on the procedures for evaluating faults by dissolved gas analysis of power transformers is presented.
Journal ArticleDOI
Condition Monitoring of Power Transformers - Bibliography Survey
TL;DR: In this article, the authors proposed a preventive maintenance technique for power transformers, such as DGA, thermal monitoring, partial discharge measurement, capacitance and tan delta measurements, frequency response analysis, etc., to identify problems at an early stage before a catastrophic failure occurs.
References
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Book
Fuzzy Sets and Fuzzy Logic: Theory and Applications
George J. Klir,Bo Yuan +1 more
TL;DR: Fuzzy Sets and Fuzzy Logic is a true magnum opus; it addresses practically every significant topic in the broad expanse of the union of fuzzy set theory and fuzzy logic.
Journal ArticleDOI
A review of faults detectable by gas-in-oil analysis in transformers
TL;DR: In this article, the authors present a more user-friendly graphical form of the IEC TC10 databases of DGA results corresponding to faults identified by visual inspection of faulty transformers in service.
Journal ArticleDOI
IEEE and IEC Codes to Interpret Incipient Faults in Transformers, Using Gas in Oil Analysis
TL;DR: In this article, the Buchholz relay was used to detect incipient faults in oil immersed transformers by examination of the gases dissolved in the oil developed from the original Buchholtz relay application.
Journal ArticleDOI
Interpretation of gas-in-oil analysis using new IEC publication 60599 and IEC TC 10 databases
Michel Duval,A. dePabla +1 more
TL;DR: In this paper, the authors present an in-depth description of the five main types of faults usually found in electrical equipment in service, and examples of typical (normal) gas concentration values observed in service are given for six different types of equipment.
Journal ArticleDOI
Dissolved gas analysis: It can save your transformer
TL;DR: In this article, the use of dissolved gas analysis (DGA) to monitor the in-service behavior of transformers is discussed, and two commercial hydrogen-in-oil detectors are described.
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Interpretation of gas-in-oil analysis using new IEC publication 60599 and IEC TC 10 databases
Michel Duval,A. dePabla +1 more