Study of charge injection in insulators submitted to diverging fields

Author

Naz, O. ; Lewiner, J. ; Ditchi, T. ; Alquié, C.

Author_Institution

Lab. d´´Electr. Gen., Ecole Superieure de Phys. et de Chimie Ind., Paris, France

Volume

5

Issue

1

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

2

Lastpage

8

Abstract

Various theoretical models have been proposed to explain the behavior of insulator-electrode interfaces in the case of strongly divergent electric fields. However until recently a direct measurement of the charge transferred at these interfaces could not be performed and very indirect ways had to be used. In this paper we propose a structure which allows for direct measurements of this charge using the PWP (pressure wave propagation) method. We present evidence of charge transferred around small diameter wires, embedded in an insulator, submitted to an applied voltage

Keywords

ageing; electric breakdown; insulation testing; life testing; space charge; trees (electrical); PWP; applied voltage; charge injection; diverging fields; insulator-electrode interfaces; pressure wave propagation method; small diameter wires; Acoustic propagation; Acoustic pulses; Current measurement; Dielectrics and electrical insulation; Electrodes; Geometry; Space charge; Stress; Voltage; Wires;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.660747

Filename

660747