Title :
Measurement of the time dependent impedance of pulsed planar surface discharges in a xenon cover gas
Author :
Fulker, D.J. ; Fouracre, R.A. ; Finlayson, A.J. ; MacGrego, S.J.
Author_Institution :
QinetiQ Ltd., Farnborough, UK
Abstract :
The time varying impedance was measured for pulsed planar surface discharges over a PTFE substrate in a xenon cover gas. Surface discharges were driven by a 2 Ω, 5 μs type C Guillemin PFN, which allowed the discharge to be driven in a controlled manner for 5 μs and allowed the calculation of the discharge impedance directly from a measurement of the voltage across the surface discharge. Empirical expressions were found describing the impedance of surface discharges for a constant impedance driving source for various charging voltages and cover gas pressures.
Keywords :
polymers; surface discharges; surface impedance; xenon; 2 ohm; 5 mus; PTFE substrate; Xe; constant impedance driving source; pulsed planar surface discharges; time dependent impedance; type C Guillemin PFN; xenon cover gas; Fault location; Impedance measurement; Pulse measurements; Surface charging; Surface discharges; Surface impedance; Time measurement; Voltage control; Voltage measurement; Xenon;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on
Print_ISBN :
0-7803-7502-5
DOI :
10.1109/CEIDP.2002.1048854
