The effect of viscosity on streamer propagation in insulating oil under impulse conditions

Author

Badent, R. ; Kist, K. ; Schwab, A.J.

Author_Institution

Inst. of Electr. Energy Syst. & High-Voltage Technol., Karlsruhe Univ., Germany

fYear

1996

fDate

15-19 Jul 1996

Firstpage

181

Lastpage

184

Abstract

In previous studies the influence of viscosity on predischarge initiation and propagation was investigated using fluids with different viscosity numbers. However, this procedure has the disadvantage that the influences of fluid composition and viscosity cannot be separated. In this work only one fluid (transformer oil Shell Diala D) was investigated. The viscosity was adjusted by keeping the oil at the correlated temperature. The experiments were carried out varying the viscosity over a wide range. The predischarge behavior was explored in the strongly non-uniform field of point-plane geometries with gaps up to 10 mm and impulse voltages of both polarities up to 250 kV

Keywords

discharges (electric); transformer oil; viscosity; 250 kV; Shell Diala D; impulse; insulating oil; point-plane gap; predischarge; streamer propagation; transformer oil; viscosity; Breakdown voltage; Dielectric liquids; Dielectrics and electrical insulation; Geometry; High speed optical techniques; Oil insulation; Optical propagation; Petroleum; Temperature; Viscosity;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Dielectric Liquids, 1996, ICDL '96., 12th International Conference on

Conference_Location

Roma

Print_ISBN

0-7803-3560-0

Type

conf

DOI

10.1109/ICDL.1996.565410

Filename

565410