Title :
Electrical breakdown of paper-ice composite insulating system in liquid nitrogen
Author :
Nagao, Masayuki ; Yanase, Jun Ichi ; Kosaki, Masamitsu
Author_Institution :
Dept. of Electr. & Electron. Eng., Toyohashi Univ. of Technol., Japan
Abstract :
In this paper, we have studied the AC breakdown performance of paper-ice composite insulating system immersed in liquid nitrogen. The electric strength (Fb) in this paper-ice composite system is higher than that of paper-liquid nitrogen system. Furthermore, this system shows a self-healing type breakdown behavior. Among the many kinds of liquid to be immersed and frozen to the ice, deionized water gives the highest Fb. The Fb increased with the paper density. The paper-ice composite insulation system is thought to be one of good candidate for the electrical insulating system at cryogenic temperature
Keywords :
composite insulating materials; cryogenics; electric breakdown; electric strength; ice; paper; AC electrical breakdown; N2; cryogenic insulation; deionized water; electric strength; liquid nitrogen; paper-ice composite insulating system; self-healing; Breakdown voltage; Cable insulation; Dielectric liquids; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Ice; Nitrogen; Plastic insulation; Temperature;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-7803-3851-0
DOI :
10.1109/CEIDP.1997.641180
