Insulation characteristics of GIS spacer for very fast transient overvoltage

Author

Okabe, S. ; Koto, M. ; Endo, F. ; Kobayashi, K.

Author_Institution

Tokyo Electr. Power Co. Inc., Japan

Volume

11

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

210

Lastpage

218

Abstract

V-t characteristics of spacer surfaces for VFT were investigated under particle contaminated conditions for gas insulated switchgear (GIS). V-t characteristics for VFT were measured with the particle length, oscillation frequency, amplitude, and damping factor of VFT waveform as parameters. Differences in V-t characteristics for VFT due to variation of oscillation frequency, amplitude, and damping factor were small. Further, they were compared with V-t characteristics for lightning impulse. The dielectric strength of spacer surfaces for VFT was found to be at least equivalent to the dielectric strength for lightning impulse

Keywords

damping; electric strength; gas insulated switchgear; insulation testing; lightning; overvoltage; switchgear testing; transient analysis; voltage measurement; GIS spacer; V-t characteristics; VFT waveform; amplitude; damping factor; dielectric strength; gas insulated switchgear; lightning impulse; oscillation frequency; particle contaminated conditions; particle length; spacer surfaces; very fast transient overvoltage; Damping; Dielectric breakdown; Dielectric measurements; Frequency measurement; Gas insulation; Geographic Information Systems; Length measurement; Lightning; Surface contamination; Switchgear;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.484018

Filename

484018