Streamer inception and propagation in rape-seed oils and mineral oils

Author

Hemmer, M. ; Julliard, Y. ; Badent, R. ; Schwab, A.J.

Author_Institution

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

fYear

2001

fDate

2001

Firstpage

548

Lastpage

551

Abstract

Rape-seed oils prove to be good insulating liquids suitable for the use in high-voltage apparatus. In order to compare the breakdown behaviour of rape-seed oils with mineral oils, investigations with lightning and switching impulse voltage have been carried out. Due to the differing chemical structure, streamers in rape-seed oils show differing properties with respect to inception voltage, field strength, propagation velocity and structure. Nevertheless some similarities still remain e.g. polarity effect and streamer modes. Both, similarities and differences will be discussed in this contribution

Keywords

discharges (electric); insulating oils; breakdown behaviour; chemical structure; field strength; high-voltage apparatus; inception voltage; insulating liquids; lightning; mineral oils; polarity effect; propagation velocity; rape-seed oils; streamer inception; streamer modes; streamer propagation; structure; switching impulse voltage; Breakdown voltage; Dielectrics and electrical insulation; Electrodes; Lightning; Minerals; Nonuniform electric fields; Oil insulation; Optical recording; Petroleum; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2001 Annual Report. Conference on

Conference_Location

Kitchener, Ont.

Print_ISBN

0-7803-7053-8

Type

conf

DOI

10.1109/CEIDP.2001.963602

Filename

963602