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RESEARCH PAPERS: Arctic Engineering

The Effect of Voltage Polarity on Ice Accretions on Short String Insulators

[+] Author and Article Information
M. Farzaneh, J.-L. LaForte

Université du Québec a Chicoutimi, Québec, Canada

J. Offshore Mech. Arct. Eng 113(2), 179-184 (May 01, 1991) (6 pages) doi:10.1115/1.2919915 History: Received August 24, 1989; Revised August 07, 1990; Online June 12, 2008

Abstract

The present study investigated the effect of voltage polarity on ice deposits accumulated on a short-string of porcelain insulators from 85 μm supercooled droplets in a cold room maintained at a temperature of −12°C. The air velocity and the liquid water content were 3.3 m/s and 2.0 g/m3 , respectively. Under these growth conditions, the type of ice accretion was hard rime with a density of 0.87 g/cm3 and the highest probability of flashover occurrence. With an applied voltage of 15 kV per insulator unit, corresponding to the operational voltage in service, there were no major changes in weight, density or the texture of the ice grown on the surface of the insulators.

Copyright © 1991 by The American Society of Mechanical Engineers
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