Study of pre-breakdown current in air-solid interface

Author

Handala, Mohand Amokrane ; Lamrous, Omar

Author_Institution

Dept. d´´Electrotech., Univ. Mouloud Mammeri, Tizi-Ouzou, Algeria

fYear

2009

fDate

19-23 July 2009

Firstpage

713

Lastpage

716

Abstract

An experimental study of pre-breakdown current in air-solid interface subjected to a 50-Hz AC voltage at atmospheric pressure is presented. The results show that the pre-breakdown current is in the form of pulses. We characterize these currents by the shape the pulses, their magnitude and the associated charge. The pre-breakdown current is strongly influenced by the applied voltage and the thickness and permittivity of the solid insulation. The effect of an air layer between the high voltage electrode and the solid dielectric on the characteristics of the pre-breakdown current is reported. The morphology of the surface discharge presents a particular aspect which depends on the space charge.

Keywords

electric breakdown; insulation; permittivity; air-solid interface; atmospheric pressure; frequency 50 Hz; permittivity; prebreakdown current; solid insulation; space charge; surface morphology; Dielectrics and electrical insulation; Electrodes; Electromagnetic measurements; Oscilloscopes; Power transformer insulation; Solids; Surface discharges; Surface morphology; Testing; Voltage; Air-solid interface; current pulses; prebreakdown current; surface discharge;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the

Conference_Location

Harbin

Print_ISBN

978-1-4244-4367-3

Electronic_ISBN

978-1-4244-4368-0

Type

conf

DOI

10.1109/ICPADM.2009.5252331

Filename

5252331