Title :
Performance of cycloaliphatic resin spacers in SF6-N2 gas mixtures
Author :
Rajan, J. ; Dwarakanath, K. ; Srinivasan, N.
Author_Institution :
Central Power Res. Inst., Bangalore, India
Abstract :
Studies have shown that SF6-N2 gas mixture is a viable alternative to SF6 gas for high voltage applications. However, the performance of spacers in gas mixture needs complete evaluation for a better understanding of the long term performance of GIS. This study aims at evaluation of cycloaliphatic resin spacers for applications in SF6-N2 gas mixtures. Surface flashover across cycloaliphatic resin spacers has been determined under AC, DC, and combined AC-DC voltages and with fixed metallic particles in SF6, N2 and SF6-N 2 gas mixtures of different proportions. The results show that cycloaliphatic resin cast spacers are good for gas mixture applications but the filler content is required to be altered for achieving better performance under DC and repetitive pulses
Keywords :
SF6 insulation; flashover; nitrogen; polymers; surface discharges; AC voltage; DC pulses; DC voltage; N2; SF6; SF6-N2; SF6-N2 gas mixtures; combined AC-DC voltages; cycloaliphatic resin spacers; filler content; fixed metallic particles; high voltage applications; repetitive pulses; surface flashover; Circuits; Dielectric breakdown; Dielectric materials; Ducts; Flashover; Gas insulated transmission lines; Low voltage; Resins; Sulfur hexafluoride; Testing;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973678
