Title :
Critical flashover voltage of short HV insulator covered with ice at low atmospheric pressure
Author :
Li, Y. ; Farzaneh, M. ; Zhang, J.
Author_Institution :
Dept. des Sci. Appliquees, Quebec Univ., Chicoutimi, Que., Canada
Abstract :
The main purpose of the present paper is to investigate the effects of high altitude on AC flashover of a short insulator covered with ice. The experiments were carried out in an evacuated chamber in which the air pressure condition at high altitude up to 9000 m may be simulated. It was found that low pressure at high altitudes could reduce the minimum flashover voltage of the short insulator covered with ice. The results also showed that the effects of low air pressure on the minimum flashover voltage of ice-covered insulators depend on insulator profile
Keywords :
flashover; ice; insulator testing; AC flashover; air pressure condition; critical flashover voltage; evacuated chamber; high altitude; ice; insulator profile; low atmospheric pressure; minimum flashover voltage reduction; short HV insulator; short insulator; Air pollution; Dielectrics and electrical insulation; Environmental factors; Environmentally friendly manufacturing techniques; Flashover; Ice thickness; Industrial pollution; Porcelain; Power transmission lines; Voltage;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.729018
