DocumentCode :
3052298
Title :
Analysis of cumulative number and polarity of creeping discharges initiated at solid/liquid interfaces subjected to AC voltage
Author :
Beroual, A. ; Kebbabi, L.
Author_Institution :
AMPERE CNRS, Ecole Centrale de Lyon, Ecully, France
fYear :
2009
fDate :
18-21 Oct. 2009
Firstpage :
380
Lastpage :
383
Abstract :
This paper deals with the influence of voltage and the nature of solid sample on the cumulative number of creeping discharge events and their locations on one voltage cycle. It´s shown that the total number of discharges recorded during 500 cycles of voltage increases significantly with the voltage. The threshold voltage Ui of discharges depends on the kind of material; and the average number of discharges (nmoy) increases with the dielectric constant, ¿r, of insulator. For instance, nmoy is the highest for Bakelite (¿r = 4.8) and the lowest for Polycarbonate (¿r = 2.9). On the other hand, nmoy of negative discharges seems to be slightly higher than that of positive ones whatever the solid sample and the amplitude of voltage.
Keywords :
discharges (electric); interface phenomena; organic insulating materials; permittivity; polymers; AC Voltage; bakelite; creeping discharge cumulative number; creeping discharge polarity; dielectric constant; insulator; polycarbonate; solid-iquid interfaces; threshold voltage; Detectors; Dielectric constant; Dielectric liquids; Dielectric materials; Dielectrics and electrical insulation; Electrodes; Fault location; Materials testing; Solids; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2009. CEIDP '09. IEEE Conference on
Conference_Location :
Virginia Beach, VA
ISSN :
0084-9162
Print_ISBN :
978-1-4244-4557-8
Electronic_ISBN :
0084-9162
Type :
conf
DOI :
10.1109/CEIDP.2009.5377844
Filename :
5377844
Link To Document :
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