Title :
Effect of low pressure on V-I characteristics of AC arc on ice surfaces
Author :
Farzaneh, M. ; Li, Y. ; Zhang, J. ; Fikke, S.M.
Author_Institution :
NSERC, Hydro-Quebec, Chicoutimi, Que., Canada
Abstract :
Using a triangular ice sample, the voltage-current characteristics of AC are on ice surfaces were studied under low air pressure conditions, and the arc constants A and n, as well as the electrode voltage drop were determined. It was found that the air pressure has an obvious influence on the arc constant A and the electrode voltage drop but no effects on the arc constant n. This influence could explain the decrease in critical flashover voltage of ice-covered insulators in high altitudes
Keywords :
arcs (electric); flashover; ice; insulator contamination; surface discharges; AC arc; critical flashover voltage; electrode voltage drop; high altitude; ice surface; ice-covered insulator; low air pressure atmosphere; voltage-current characteristics; Electrodes; Flashover; Glass; Ice surface; Insulation; Leakage current; Pollution; Power grids; Power transmission lines; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.885274
