Effect of oxygen on oil decay products formation

Author

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

Author_Institution

Dept. of Insulating Liquids & Mixed Dielectrics for Electrotechnol., Univ. of Quebec at Chicoutimi, Chicoutimi, QC, Canada

fYear

2009

fDate

May 31 2009-June 3 2009

Firstpage

133

Lastpage

137

Abstract

It was believed that the increase in acid number is a forerunner of the formation of sludge, which is considered as a most detrimental chemical process. Now, more sensitive methods based on light absorption and diffraction (ASTM D6802 and D6181), can be used for detection of early stage sludge formation even at low acid number. In the present study, the effect of oxygen on the aging process of insulating systems in both hermitic and air breathing transformers has been simulated under controlled laboratory conditions, for different types of insulating fluids. The obtained results convincingly prove that paramagnetic nature of oxygen can adversely affect the dielectric properties of liquid and solid insulations used in power transformers.

Keywords

power transformer insulation; transformer oil; aging process; dielectric properties; diffraction; early stage sludge formation; insulating systems; light absorption; oil decay products formation; power transformer; solid insulations; Absorption; Aging; Chemical processes; Dielectric liquids; Dielectrics and electrical insulation; Diffraction; Laboratories; Paramagnetic materials; Petroleum; Power transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference, 2009. EIC 2009. IEEE

Conference_Location

Montreal, QC

Print_ISBN

978-1-4244-3915-7

Electronic_ISBN

978-1-4244-3917-1

Type

conf

DOI

10.1109/EIC.2009.5166331

Filename

5166331