Review of Physicochemical-Based Diagnostic Techniques for Assessing Insulation Condition in Aged TransformersReport as inadecuate




Review of Physicochemical-Based Diagnostic Techniques for Assessing Insulation Condition in Aged Transformers - Download this document for free, or read online. Document in PDF available to download.

1

Département Génie Électrique et Électronique, Institut National Polytechnique Houphouët Boigny INP-HB, BP 1093 Yamoussoukro, Ivory Coast

2

Research Chair on the Aging of Power Network Infrastructure ViAHT, Université du Québec à Chicoutimi, 555 Boulevard de l’Université, Chicoutimi, QC G7H 2B1, Canada

3

Ecole Centrale de Lyon, Université de Lyon, Ampère CNRS UMR 5005, 36 Avenue Guy de Collongue, 69134 Ecully, France





*

Author to whom correspondence should be addressed.



Academic Editor: Enrico Sciubba

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. View Full-Text

Keywords: 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 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





Author: Janvier Sylvestre N’cho 1, Issouf Fofana 2,* , Yazid Hadjadj 2 and Abderrahmane Beroual 3

Source: http://mdpi.com/



DOWNLOAD PDF




Related documents