Dissolved gases analysis in relation to the energy of electrical discharges in mineral oil

Author

Moulai, H. ; Nacer, A. ; Beroual, A.

Author_Institution

Lab. of Electr. & Ind. Syst., Univ. of Sci. & Technol. Houari Boumediene, Algiers, Algeria

Volume

19

Issue

2

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

498

Lastpage

504

Abstract

This paper deals with the characterization of discharges initiated in mineral oil and the gases that they generate depending on their energy levels. Different types of discharges are identified in function of the electrode geometry and the applied voltage. Each type of discharge is analysed through the generating gases and the processes implicated in oil degradation are discussed according to different standard specifications. By estimating the forms of energy that can be involved in the gas formation, it was evidenced that vaporisation processes are as important for discharges of weak energy as for those of high energy.

Keywords

discharges (electric); electrodes; power transformers; transformer oil; dissolved gases analysis; electrical discharges; electrode geometry; mineral oil; oil degradation; power transformer; standard specifications; vaporisation processes; Discharges; Electrodes; Energy states; Gases; IEC standards; Minerals; Neodymium; Mineral oil; breakdown in oil; diagnosis; discharges; gases in oil;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2012.6180243

Filename

6180243