Tree initiation mechanisms

Author

Tanaka, Toshikatsu

Author_Institution

Central Res. Inst. of Electr. Power Ind., Tokyo, Japan

fYear

1991

fDate

8-12 Jul 1991

Firstpage

18

Abstract

Tree initiation mechanisms are described mainly for polyethylene. The importance of V-t characteristics is emphasized for tree initiation studies, since processes may be different for different voltages and times. Not only morphological aspects, but also space-charge effects are accentuated. The V-t characteristics for tree initiation are explained in terms of electric-field-induced degradation of polymers and space-charge accumulation. A space-charge-oriented model is demonstrated for tree initiation, which includes submodels to explain many associated phenomena

Keywords

electric breakdown of solids; organic insulating materials; polymers; space charge; electric-field-induced degradation; morphological aspects; polyethylene; space-charge accumulation; space-charge effects; space-charge-oriented model; submodels; tree initiation studies; voltage-time characteristics; Cable insulation; Dielectric breakdown; Dielectrics and electrical insulation; Manufacturing; Partial discharges; Polyethylene; Power transmission; Stress; Trees - insulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on

Conference_Location

Tokyo

Print_ISBN

0-87942-568-7

Type

conf

DOI

10.1109/ICPADM.1991.172345

Filename

172345