Title :
Spatial structure and parameters of the predischarge channels in dielectric liquids of various molecular structure
Author_Institution :
All Russian Electrotechnical Inst., Moscow, Russia
Abstract :
Time-resolved pictures of the discharges with simultaneous recording of predischarge current have been obtained in transformer oils and in per-fluorocarbon liquid under a positive impulse in a sharply non-uniform field. The inception of the stepwise - flash propagation process (SFP) of discharge was observed in both liquids. It is shown that the inception voltage of the SFP can be important parameter closely related to the breakdown voltage of the liquids.
Keywords :
dielectric liquids; discharges (electric); electric breakdown; plasma diagnostics; transformer oil; breakdown voltage; dielectric liquids; inception voltage; molecular structure; per-fluorocarbon liquid; positive impulse; predischarge channels; predischarge current; sharply nonuniform field; spatial structure; stepwise-flash propagation; time-resolved pictures; transformer oils; Breakdown voltage; Chemicals; Dielectric liquids; Electric breakdown; Minerals; Needles; Oil insulation; Petroleum; Safety; Stability;
Conference_Titel :
Dielectric Liquids, 2002. ICDL 2002. Proceedings of 2002 IEEE 14th International Conference on
Print_ISBN :
0-7803-7350-2
DOI :
10.1109/ICDL.2002.1022704
