SPACE-CHARGE FORMATION IN WATER-TREED INSULATION

Authors
OHKI Y EBINUMA Y KATAKAI S
Citation
Y. Ohki et al., SPACE-CHARGE FORMATION IN WATER-TREED INSULATION, IEEE transactions on dielectrics and electrical insulation, 5(5), 1998, pp. 707-712
Citations number
18
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on dielectrics and electrical insulation → ACNP
ISSN journal
10709878
Volume
5
Issue
5
Year of publication
1998
Pages
707 - 712
Database
ISI
SICI code
1070-9878(1998)5:5<707:SFIWI>2.0.ZU;2-M
Abstract
Observations of the space charge distribution around water trees are r eviewed, and the nature of water trees analyzed from those results is discussed. It was concluded that at least two mechanisms are responsib le for the formation of space charges. One is interfacial polarization due to the high conductivity of a tree channel, and the other is carr ier injection from the tree tip at high electric fields.