SF6 breakdown in GIS

被引：17

作者：

Tekletsadik, K

Campbell, LC

机构：

[1] Centre for Electrical Power Engineering, Department of Electronic and Electrical Engineering, University of Strathclyde

来源：

IEE PROCEEDINGS-SCIENCE MEASUREMENT AND TECHNOLOGY | 1996年 / 143卷 / 05期

关键词：

SF6 gas breakdown; disconnector generated transients; volt-time characteristic curves; inhomogeneous electric field;

D O I：

10.1049/ip-smt:19960546

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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) mu s 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.

引用

页码：270 / 276

页数：7