The morphology and behavior of the water tree

Author

Chen, J.L. ; Filippini, J.C.

Author_Institution

CNRS, Lab. d´´Electrostatique et de Materiaux Dielectriques, Grenoble, France

Volume

28

Issue

2

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

271

Lastpage

286

Abstract

The internal structure of water trees is examined in detail, particularly the nonuniformity of their internal structure. The quantitative space distribution of bouquets and microcavities is given. Based on the fact that the water tree is composed of a number of microcavities filled with liquid, the authors analyze the behavior of water trees, i.e., the dielectric properties of the zone of the water tree and its influence on the distribution of the dielectric field. An interpretation of the development of the water tree is proposed and a possible cause of water-tree-induced breakdown is suggested

Keywords

electric breakdown of solids; organic insulating materials; polymers; voids (solid); HV insulation; LDPE; bouquets; dielectric field distribution; dielectric properties; internal structure nonuniformity; microcavities; polyethylene; quantitative space distribution; water tree morphology; water-tree-induced breakdown; Dielectric liquids; Electric breakdown; Microcavities; Morphology; Needles; Plastic insulation; Polymers; Power cables; Testing; Trees - insulation;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.212252

Filename

212252