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3 results on '"gas chromatography-mass spectrometry coupling"'

1. Review of Physicochemical-Based Diagnostic Techniques for Assessing Insulation Condition in Aged Transformers

Author

Janvier Sylvestre N’cho, Issouf Fofana, Yazid Hadjadj, and Abderrahmane Beroual

Subjects
power transformers, insulating oil/paper, diagnostics, color/visual examination, particle count, inhibitor content, moisture, DGA, acidity, interfacial tension, viscosity, DP, furan, HPLC, gas chromatography-mass spectrometry coupling, FTIR spectroscopy, UV/visible spectroscopy, dissolved decay products, turbidity, methanol, free radicals, Technology
Abstract

A power transformer outage has a dramatic financial consequence not only for electric power systems utilities but also for interconnected customers. The service reliability of this important asset largely depends upon the condition of the oil-paper insulation. Therefore, by keeping the qualities of oil-paper insulation system in pristine condition, the maintenance planners can reduce the decline rate of internal faults. Accurate diagnostic methods for analyzing the condition of transformers are therefore essential. Currently, there are various electrical and physicochemical diagnostic techniques available for insulation condition monitoring of power transformers. This paper is aimed at the description, analysis and interpretation of modern physicochemical diagnostics techniques for assessing insulation condition in aged transformers. Since fields and laboratory experiences have shown that transformer oil contains about 70% of diagnostic information, the physicochemical analyses of oil samples can therefore be extremely useful in monitoring the condition of power transformers.

Published
2016
Full Text
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2. Review of Physicochemical-Based Diagnostic Techniques for Assessing Insulation Condition in Aged Transformers

Author

Abderrahmane Beroual, Yazid Hadjadj, J. S. N'Cho, Issouf Fofana, Institut national polytechnique Félix Houphouët-Boigny, Institut National Polytechnique Félix Houphouët-Boigny, Université du Québec à Chicoutimi (UQAC), Ampère, Département Energie Electrique (EE), Ampère (AMPERE), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
gas chromatography-mass spectrometry coupling, Control and Optimization, inhibitor content, Transformer oil, Computer science, 020209 energy, furan, Energy Engineering and Power Technology, free radicals, interfacial tension, 02 engineering and technology, lcsh:Technology, 01 natural sciences, law.invention, DP, Electric power system, DGA, law, Insulation system, moisture, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, particle count, diagnostics, dissolved decay products, UV/visible spectroscopy, Electrical and Electronic Engineering, Transformer, color/visual examination, Engineering (miscellaneous), acidity, methanol, 010302 applied physics, insulating oil/paper, Moisture, lcsh:T, Renewable Energy, Sustainability and the Environment, business.industry, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Electrical engineering, Condition monitoring, turbidity, Reliability engineering, power transformers, FTIR spectroscopy, viscosity, HPLC, business, Energy (miscellaneous)
Abstract

International audience; A power transformer outage has a dramatic financial consequence not only for electric power systems utilities but also for interconnected customers. The service reliability of this important asset largely depends upon the condition of the oil-paper insulation. Therefore, by keeping the qualities of oil-paper insulation system in pristine condition, the maintenance planners can reduce the decline rate of internal faults. Accurate diagnostic methods for analyzing the condition of transformers are therefore essential. Currently, there are various electrical and physicochemical diagnostic techniques available for insulation condition monitoring of power transformers. This paper is aimed at the description, analysis and interpretation of modern physicochemical diagnostics techniques for assessing insulation condition in aged transformers. Since fields and laboratory experiences have shown that transformer oil contains about 70% of diagnostic information, the physicochemical analyses of oil samples can therefore be extremely useful in monitoring the condition of power transformers.

Published
2016
Full Text
View/download PDF

3. Review of physicochemical-based diagnostic techniques for assessing insulation condition in aged transformers

Author

N'cho, Janvier Sylvestre, Fofana, Issouf, Hadjadj, Yazid, Beroual, Abderrahmane, N'cho, Janvier Sylvestre, Fofana, Issouf, Hadjadj, Yazid, and Beroual, Abderrahmane

Abstract

A power transformer outage has a dramatic financial consequence not only for electric power systems utilities but also for interconnected customers. The service reliability of this important asset largely depends upon the condition of the oil-paper insulation. Therefore, by keeping the qualities of oil-paper insulation system in pristine condition, the maintenance planners can reduce the decline rate of internal faults. Accurate diagnostic methods for analyzing the condition of transformers are therefore essential. Currently, there are various electrical and physicochemical diagnostic techniques available for insulation condition monitoring of power transformers. This paper is aimed at the description, analysis and interpretation of modern physicochemical diagnostics techniques for assessing insulation condition in aged transformers. Since fields and laboratory experiences have shown that transformer oil contains about 70% of diagnostic information, the physicochemical analyses of oil samples can therefore be extremely useful in monitoring the condition of power transformers.

Published
2016

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