Temporal behavior of surface charge accumulation in bridged vacuum gaps

Author

Yamamoto, O. ; Hara, T. ; Matsuura, H. ; Hayashi, M.

Author_Institution

Dept. of Electr. Eng., Kyoto Univ., Japan

Volume

2

Issue

2

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

292

Lastpage

298

Abstract

Temporal change in electric field strength at the insulator-cathode-vacuum interface accompanied by charging of the insulator have been studied by using a two-dimensional Monte Carlo simulation. The study employed cylindrical and conical insulators. Each of the insulators was made of PMMA, polyimide or Al₂O₃. The field strength with cylindrical insulators shows an abrupt increase, and with conical insulators a rapid reduction. Dependencies of the field change on the applied voltage height and material are demonstrated. Flashovers occur after the simulated field change

Keywords

Monte Carlo methods; cathodes; ceramic insulators; electric strength; flashover; insulator testing; polymer insulators; surface charging; vacuum breakdown; Al₂O₃; Al₂O₃ insulator; HV insulators; PMMA; applied voltage height; bridged vacuum gaps; conical insulators; cylindrical insulators; electric field strength; flashover; insulator-cathode-vacuum interface; polyimide; surface charge accumulation; temporal behavior; two-dimensional Monte Carlo simulation; Artificial intelligence; Cathodes; Dielectrics and electrical insulation; Electron emission; Flashover; Kinetic energy; Shape; Surface charging; Vacuum breakdown; Voltage;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.388255

Filename

388255