DocumentCode
1367467
Title
SF6 breakdown in GIS
Author
Tekletsadik, K. ; Campbell, L.C.
Author_Institution
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
Volume
143
Issue
5
fYear
1996
fDate
9/1/1996 12:00:00 AM
Firstpage
270
Lastpage
276
Abstract
SF6 gas breakdown and spacer surface flashover volt-time characteristic curves were established for a GIS of D/d=55/25 (15 mm gap) and D/d=45/25 (10 mm gap) for 1.2/50, 0.5/50, 0.2/50 and osc/50 (1.64 MHz) μs impulse and disconnector induced VFT voltages. VFT volt-time curves established using actual breakdown voltages against actual time to breakdown were found to give a better representation of the dielectric performance, and thus are recommended for future applications. Highly inhomogeneous field geometries, such as particle contaminated gaps, caused downward turning of the v-t curves during VFT breakdowns at short times to breakdown
Keywords
SF6 insulation; electric breakdown; electric strength; flashover; gas insulated substations; substation insulation; transients; 1.64 MHz; 10 mm; 15 mm; SF6; disconnector induced VFT voltages; electrode effects; fast transient voltages; gas breakdown; gas insulated substations; highly inhomogeneous field geometries; impulse voltages; particle contaminated gaps; spacer surface flashover; volt-time characteristic curves;
fLanguage
English
Journal_Title
Science, Measurement and Technology, IEE Proceedings -
Publisher
iet
ISSN
1350-2344
Type
jour
DOI
10.1049/ip-smt:19960546
Filename
536426
Link To Document