Application of modern diagnostic techniques to assess the condition of oil and pressboard

Author

Bouaïcha, A. ; Fofana, I. ; Farzaneh, M.

Author_Institution

Canada Res. Chair on Insulating Liquids & Mixed Dielectrics for Electrotechnol., Univ. of Quebec in Chicoutimi, Chicoutimi, QC

fYear

2008

fDate

June 30 2008-July 3 2008

Firstpage

1

Lastpage

4

Abstract

Aging of oil-paper insulation was investigated under controlled laboratory conditions. Traditional and modern diagnostic tools and techniques are discussed. Insulation condition testing includes common chemical diagnostics such as acidity tests and several new chemical techniques such as determination of relative content of dissolved decay products by spectrophotometry, solid suspension by turbidimetry, Fourier transform infrared spectroscopy, and electrical diagnostic techniques that have gained exceptional importance for utility professionals, such as polarisation/depolarisation current and frequency domain dielectric spectroscopy measurements. Based on the preliminary results, the suitability of each method analyzed along with its interpretation scheme. Finally, recommendations for further investigation are presented.

Keywords

Fourier transform spectra; condition monitoring; dielectric depolarisation; dielectric measurement; dielectric polarisation; infrared spectra; insulation testing; pH; paper; power transformer insulation; spectrochemical analysis; spectrophotometry; transformer oil; turbidimetry; Fourier transform infrared spectroscopy; acidity tests; aging; chemical diagnostics; condition assessment; diagnostic techniques; dissolved decay products; electrical diagnostic techniques; frequency domain dielectric spectroscopy measurement; insulation condition testing; oil-paper insulation; polarisation/depolarisation current; pressboard; solid suspension; spectrophotometry; transformer insulation; turbidimetry; Aging; Chemical products; Dielectrics and electrical insulation; Fourier transforms; Infrared spectra; Insulation testing; Laboratories; Oil insulation; Petroleum; Solids;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids, 2008. ICDL 2008. IEEE International Conference on

Conference_Location

Futuroscope-Chasseneuil

Print_ISBN

978-1-4244-1585-4

Electronic_ISBN

978-1-4244-1586-1

Type

conf

DOI

10.1109/ICDL.2008.4622475

Filename

4622475