Title :
A thermal model of positive pre-breakdown streamers in insulating liquids
Author :
Watson, P. Keith ; Sufian, Towfick ; Chadband, W.G.
Author_Institution :
Xerox Corp., Webster, NY, USA
Abstract :
It has been shown that, in nonvolatile fluids, the column of a positive prebreakdown streamer behaves like a region of hot liquid. This is demonstrated by the following experiment: a short high voltage pulse is used to generate the streamer, and after a time delay a flash pulse illuminates the gap. Flash photographs taken over a wide range of delay intervals make it possible to study the decay of the streamer column. The decay process follows a thermal model in which the decay time scales with the square of the column diameter and inversely as thermal diffusivity
Keywords :
dielectric liquids; flash pulse; high voltage pulse; hot liquid; insulating liquids; nonvolatile fluids; prebreakdown streamer; thermal diffusivity; thermal model; time delay; Delay effects; Dielectric liquids; Electrostatics; Insulation; Optical refraction; Optical variables control; Plasma temperature; Pulse generation; Rapid thermal processing; Voltage;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids,1993., ICDL '93., IEEE 11th International Conference on
Conference_Location :
Baden-Dattwil
Print_ISBN :
0-7803-0791-7
DOI :
10.1109/ICDL.1993.593944
