Title :
Streamer inception field strengths in rape-seed oils
Author :
Badent, R. ; Hemmer, M. ; Könekamp, U. ; Julliard, Y. ; Schwab, A.J.
Author_Institution :
Inst. of Electr. Energy Syst. & High-Voltage Technol., Karlsruhe Univ., Germany
Abstract :
This paper deals with the investigation of streamer inception voltages in rape-seed oils. Earlier investigations have suggested that rape-seed oils may be used as substitutes for mineral oils in high voltage apparatus. However, streamer inception field strengths seem to be much lower. Therefore, investigations of inception field strength have been carried out in point-plane electrode configurations using needle-electrodes with defined tip radius. Shadowgraph photography techniques coupled to charge measurements have been used. A comparison between the behaviour of rape-seed oils and mineral oils regarding streamer inception is presented. Design guidelines for insulation using rape-seed oils as a substitute for mineral oils are discussed
Keywords :
charge measurement; discharges (electric); electric breakdown; insulating oils; charge measurements; defined tip radius; high voltage apparatus; insulation design; needle-electrodes; point-plane electrode configurations; rape-seed oils; shadowgraph photography; streamer inception field strengths; streamer inception voltage; Bonding; Chemicals; Dielectric liquids; Dielectrics and electrical insulation; Minerals; Oil insulation; Petroleum; Photography; Vegetable oils; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.885279
