Surface charge accumulation on cylindrical polymeric model insulators in air: simulation and measurement

Author

Lutz, B. ; Kindersberger, J.

Author_Institution

Lehrstuhl fur Hochspannungs- und Anlagentechnik, Tech. Univ. Munchen, Munich, Germany

Volume

18

Issue

6

fYear

2011

fDate

12/1/2011 12:00:00 AM

Firstpage

2040

Lastpage

2048

Abstract

The time characteristics of the surface charge accumulation process on cylindrical polymeric model insulators under dc stress were investigated in a partial discharge free, dry air environment. In order to simulate the influence of different dielectric and electric material properties on surface charge accumulation, a tool was developed which considers also the nonlinear behavior of the electric conduction mechanism within the gas volume. The results of simulation have been verified by measurements of the surface potential distribution along the samples at different ambient temperatures.

Keywords

partial discharges; polymer insulators; surface potential; DC stress; ambient temperatures; cylindrical polymeric model insulators; dielectric material property; electric conduction mechanism; electric material property; gas volume; nonlinear behavior; partial discharge free dry air environment; surface charge accumulation process; surface potential distribution; time characteristics; Conductivity; Current density; Electric fields; Electric potential; Insulators; Mathematical model; Surface treatment; HVDC systems; polymeric insulators; surface charge accumulation;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2011.6118642

Filename

6118642