Title :
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
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;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2001 Annual Report. Conference on
Conference_Location :
Kitchener, Ont.
Print_ISBN :
0-7803-7053-8
DOI :
10.1109/CEIDP.2001.963602
