Title :
Flashover performance of polluted insulation: An assessment of the influence of air density
Author :
Hoch, D.A. ; Swift, D.A.
Author_Institution :
Dept. of Electr. Eng., Witwatersrand Univ., South Africa
Abstract :
The effect of air density on the flashover voltage of polluted high-voltage insulators has been analyzed for AC, DC, and lightning-wave energizations. The findings, based on the physics of the flashover process and test data from representative models and actual insulators, are presented as an altitude scaling factor. Aspects warranting further study are identified
Keywords :
insulator testing; AC energisation; DC energisation; air density; altitude scaling factor; breakdown; flashover voltage; high-voltage insulators; lightning-wave energizations; models; performance; polluted insulation; testing; Air pollution; Flashover; Insulation; Insulator testing; Leakage current; Power system modeling; Sea surface; Surface contamination; Surface resistance; Urban pollution;
Conference_Titel :
AFRICON '92 Proceedings., 3rd AFRICON Conference
Conference_Location :
Ezulwini Valley
Print_ISBN :
0-7803-0835-2
DOI :
10.1109/AFRCON.1992.624423
