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

fYear

1999

fDate

1999

Firstpage

474

Lastpage

478

Abstract

Liquid nitrogen is expected to be used as dielectric material in high T_c superconducting power cable systems. In an electric power apparatus such as a termination for high T_c 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 T_c 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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICDL.1999.798975

Filename

798975