Some observations on artificial cavities in a cross-linked polyethylene

Author

Garcia, G. ; Mayoux, C.

Author_Institution

Lab. de Genie Electr., Univ. Paul Sabatier, Toulouse, France

fYear

1988

fDate

12-16 Sep 1988

Firstpage

430

Abstract

An experimental study of artificial cavities in cross-linked polyethylene (XLPE) was conducted, and results are compared with those for other materials. Discharge evolution vs. time in XLPE cavities (both sealed and open) is reported. An examination of discharge characteristics vs. time shows an abrupt decrease of discharge frequency during the first 30 min; their number reaches a steady state but an extinction is never observed. This behavior is interpreted in terms of an increase in the cavity-wall conductivity or in terms of gas-pressure changes

Keywords

cable insulation; organic insulating materials; partial discharges; polymers; 30 min; XLPE; artificial cavities; cavity-wall conductivity; closed cavities; cross-linked polyethylene; discharge characteristics; discharge frequency; experimental study; gas-pressure changes; observations; open cavities; sealed cavities; Conducting materials; Conductivity; Dielectrics and electrical insulation; Gas insulation; Magnetic cores; Polyethylene; Pulse measurements; Slabs; Thermal degradation; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38426

Filename

38426