DocumentCode
1479098
Title
Effect of liquid impregnation on electrical tree initiation in XLPE
Author
Shimizu, N. ; Tanaka, H.
Author_Institution
Dept. of Electr. & Electron. Eng., Meijo Univ., Nagoya, Japan
Volume
8
Issue
2
fYear
2001
fDate
4/1/2001 12:00:00 AM
Firstpage
239
Lastpage
243
Abstract
The tree initiation voltage of impregnated crosslinked polyethylene (XLPE) with a dielectric liquid is drastically improved compared to normal XLPE for both ac and impulse voltage application. It is considered that liquid fills the polymer free volume, and removes space for electrons to be accelerated to high energy. The experimental results support that collision impact of electrons accelerated in polymer free volume is the dominant cause of electrical tree initiation, and also show that liquid impregnation is a promising way to improve performance and prolong the life of polymeric insulating materials
Keywords
XLPE insulation; impregnated insulation; impulse testing; insulation testing; XLPE; collision impact; electrical tree initiation; impulse voltage application; liquid impregnation; polymer free volume; polymeric insulating materials; Acceleration; Argon; Cable insulation; Dielectric liquids; Dielectrics and electrical insulation; Electrons; Helium; Polymers; Trees - insulation; Voltage;
fLanguage
English
Journal_Title
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher
ieee
ISSN
1070-9878
Type
jour
DOI
10.1109/94.919943
Filename
919943
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