Contribution to the study of the appearance and development of corona discharges on a surface of ice

Author

Ndiaye, I. ; Fofana, I. ; Farzaneh, Masoud

Author_Institution

UQAC sur le givrage atmospherique des equipments des reseaux electriques, Que., Canada

Volume

1

fYear

2003

fDate

4-7 May 2003

Firstpage

639

Abstract

The investigations undertaken in this article are aimed at exploring the fundamental physical processes of electric discharges on a surface of ice. The understanding of these phenomena could allow a better design of equipment adapted to icy atmospheric conditions and thus increase the reliability of transmission networks in cold regions. The ultra high speed photographic techniques are used to observe and analyse the first nanoseconds of development of the discharge on the ice surface. The shape of the insulators is complex, a simple physical geometry model (stem-plan), with different radii of curvature, is used. The appearance of streamers and their propagation speed and thus the processes of creation of space charge on the ice surface are studied. The results are compared with those obtained in the air gaps.

Keywords

corona; discharges (electric); ice; insulators; photographic applications; power transmission reliability; space charge; air gaps; cold regions; corona discharges; curvature radii; electric discharges; ice surface; icy atmospheric conditions; propagation speed; space charge; transmission networks reliability; ultra high speed photographic techniques; Air gaps; Atmospheric modeling; Corona; Geometry; Ice surface; Insulation; Shape; Solid modeling; Space charge; Surface discharges;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-7781-8

Type

conf

DOI

10.1109/CCECE.2003.1226476

Filename

1226476