Impact of an DC electric field on the charge accumulation at the pressboard/oil interface

Author

Leblanc, Paul ; Paillat, Thierry ; Perrier, C. ; Morin, Gerard

Author_Institution

Univ. of Poitiers, Chasseneuil, France

fYear

2014

fDate

June 29 2014-July 3 2014

Firstpage

1

Lastpage

4

Abstract

Mineral oils are commonly used for cooling and electrical insulation purposes in electrical power transformers and other electrical apparatus. Flow electrification of insulating liquids in different ducts has been studied for a long time. The physicochemical process appearing at the solid/liquid interface creates the electrical double layer. To study this phenomenon, a facility was designed a few years ago. It consists of a closed circulation loop where oil flows through a rectangular channel and allows measuring a streaming current and the accumulated charge on the pressboard during the flow. The present work focuses on the influence of external DC electric field.

Keywords

power transformers; transformer oil; DC electric field impact; charge accumulation; closed circulation loop; cooling purpose; electrical insulation; electrical power transformers; mineral oils; physicochemical process; pressboard-oil interface; rectangular channel; streaming current; Insulation; Radio access networks; Electric field stress; Electrical double layer; Flow electrification; Power transformers; charge accumulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids (ICDL), 2014 IEEE 18th International Conference on

Conference_Location

Bled

Type

conf

DOI

10.1109/ICDL.2014.6893078

Filename

6893078