Title :
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
fDate :
4/1/1995 12:00:00 AM
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;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
