A study on the profile of HVDC insulators-DC flashover performance

Author

Fazelian, M. ; Wu, C.Y. ; Cheng, T.C. ; Nour, H.I. ; Wang, L.J.

Author_Institution

Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA

Volume

24

Issue

1

fYear

1989

fDate

2/1/1989 12:00:00 AM

Firstpage

119

Lastpage

125

Abstract

The results of flashover tests on insulator models with various geometrical configurations under DC field are presented. Dimensional parameters are used to describe the influence of the insulator profile on the flashover performance. The effects of both the surface contamination level and the geometrical shape on the arc propagation characteristics are investigated. It is shown that the flashover voltage of an insulator model under DC field is significantly influenced by the relative width and depth of the insulator underrib. It is also shown that the arc path under DC field is a function of both the geometry and surface contamination distribution

Keywords

DC power transmission; arcs (electric); flashover; high-voltage techniques; insulators; testing; DC field; DC flashover; HVDC insulators; arc path; arc propagation characteristics; depth; flashover tests; geometrical configurations; insulator profile; surface contamination; underrib; width; Dielectrics and electrical insulation; Flashover; Geometry; HVDC transmission; Insulator testing; Length measurement; Shape; Stress; Surface contamination; Voltage;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.19876

Filename

19876