Title :
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
fDate :
1/1/1996 12:00:00 AM
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;
Journal_Title :
Power Delivery, IEEE Transactions on
