Title :
Discharge characteristics on the surface of solid insulator in liquid nitrogen
Author :
Minami, Yoshinori ; Nagaya, Shigeo ; Suzawa, Chizuru ; Chigusa, Syunji ; Isojima, Shigeru ; Hayakawa, Naoki ; Okubo, Hitoshi
Author_Institution :
Sumitomo Electr. Ind. Ltd., Japan
Abstract :
Liquid nitrogen is expected to be used as dielectric material in high Tc superconducting power cable systems. In an electric power apparatus such as a termination for high Tc superconducting power cable, we need to consider not only radial electric stress but also axial electric stress. A particular concern is the dielectric breakdown at the surface of solid insulator in liquid nitrogen. We evaluated the surface discharge characteristics on the surface of the solid insulator in liquid nitrogen experimentally
Keywords :
dielectric liquids; discharges (electric); insulating oils; nitrogen; power cable insulation; surface discharges; N2; axial electric stress; dielectric breakdown; dielectric material; discharge characteristics; electric power apparatus; high Tc superconducting power cable systems; liquid N2; radial electric stress; solid insulator surface; surface discharge; Dielectric liquids; Dielectric materials; Dielectrics and electrical insulation; Nitrogen; Power cables; Solids; Stress; Superconducting cables; Superconducting materials; Surface discharges;
Conference_Titel :
Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on
Conference_Location :
Nara
Print_ISBN :
0-7803-4759-5
DOI :
10.1109/ICDL.1999.798975
