A study of electrical tree partial discharges in nanocomposite epoxy

Author

Nyamupangedengu, C. ; Kochetov, R. ; Morshuis, P.H.F. ; Smit, J.J.

Author_Institution

Sch. of Electr. & Inf. Eng., Univ. of the Witwatersrand, Johannesburg, Johannesburg, South Africa

fYear

2012

fDate

14-17 Oct. 2012

Firstpage

906

Lastpage

911

Abstract

This paper presents results of a comparative study of the behavior of electrical tree partial discharges (PD) in clean epoxy and a MgO/epoxy resin nanocomposite. It was found that the PD phase-resolved patterns (PDPRP) of tree discharges in both clean epoxy and nanocomposite epoxy exhibited two distinct categories of small and big discharge pulses. In nanocomposite epoxy however, the average PD magnitude was orders of magnitude smaller and the repetition rate much lower than in clean epoxy. The difference is attributed to nanoparticles that block tree channels thereby effectively reducing the rate of electrical tree induced degradation of the nanocomposite.

Keywords

nanocomposites; partial discharges; resins; trees (electrical); PD magnitude; PD phase-resolved patterns; PDPRP; clean epoxy; electrical tree; electrical tree PD; electrical tree partial discharges; magnesium oxide-epoxy resin nanocomposite; nanocomposite epoxy; nanoparticles; repetition rate; tree channels; Degradation; Discharges (electric); Insulation; Nanoparticles; Needles; Partial discharges; Vegetation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2012 Annual Report Conference on

Conference_Location

Montreal, QC

ISSN

0084-9162

Print_ISBN

978-1-4673-1253-0

Electronic_ISBN

0084-9162

Type

conf

DOI

10.1109/CEIDP.2012.6378928

Filename

6378928