Simulation of surface charge effect on impulse flashover characteristics of outdoor polymeric insulators

Author

Kumara, Sarath ; Serdyuk, Yuriy V. ; Gubanski, Stanislaw M.

Author_Institution

High Voltage Eng., Chalmers Univ. of Technol., Gothenburg, Sweden

Volume

17

Issue

6

fYear

2010

Firstpage

1754

Lastpage

1763

Abstract

Effect of pre-deposited surface charges on impulse flashover characteristics of a polymeric insulator is studied by means of computer simulations utilizing a model based on criteria for streamer inception, propagation and sustenance. A parametric study is performed to investigate the influences imposed by magnitude and polarity of the charge, its location on insulator surface and properties of insulator material on its flashover voltages. The obtained results are analyzed in terms of electric field distributions in the vicinity of the insulator surface and are compared with experimental data available in the literature.

Keywords

electric charge; flashover; polymer insulators; surface charging; charge magnitude; charge polarity; impulse flashover characteristics; outdoor polymeric insulators; predeposited surface charge; surface charge effect; Electrodes; Flashover; Insulators; Ionization; Materials; Mathematical model; Surface charging; Surface charging, breakdown, streamer criterion, electrostatic field, polymeric insulator, impulse flashover voltage;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2010.5658226

Filename

5658226