Modification of XLPE exposed to partial discharges at elevated temperature

Author

Gamez-Garcia, M. ; Bartnikas, R. ; Wertheimer, M.R.

Author_Institution

Condumex Res. Center, Mexico City, Mexico

Volume

25

Issue

4

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

688

Lastpage

692

Abstract

Extensions are presented of research on partial-discharge-induced surface modifications of XLPE (crosslinked polyethylene) wherein the XLPE sample surface during corona exposure is maintained at an elevated temperature ranging up to 160°C. As for the ambient temperature case, circular degradation patterns are found, but their appearance and composition depend strongly on temperature. Furthermore, oxidation within a shallow (several micrometers) surface layer is found to increase sharply with rising temperature, an effect attributed to inward diffusion of corona-produced oxidizing species, particularly ozone and nitrogen oxides

Keywords

corona; organic insulating materials; oxidation; partial discharges; polymers; surface treatment; XLPE; ambient temperature; circular degradation patterns; corona exposure; corona-produced oxidizing species; elevated temperature; inward diffusion; oxidation; ozone; partial discharges; surface modifications; Chemicals; Corona; Degradation; Dielectrics and electrical insulation; Partial discharges; Polyethylene; Polymers; Surface discharges; Temperature distribution; Testing;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.57091

Filename

57091