Time-evolution phenomena of electrical tree partial discharges in 5 %wt MgO, Alumina and Silica Epoxy nanocomposites

Author

Cornish, D.R. ; Nyamupangedengu, C.

Author_Institution

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

fYear

2014

fDate

19-22 Oct. 2014

Firstpage

43

Lastpage

46

Abstract

This paper contributes towards further understanding the electrical treeing phenomena in epoxy nanocomposites; 5 %wt MgO, Si₂O and Al₂O₃ nanofillers mixed with epoxy. Distinct features are observed in the time-evolution of the electrical tree Partial Discharges (PDs). Plots of the average PD magnitudes recorded every second throughout the tree life are characterized by distinct clusters (classes) of different PD magnitudes and each cluster has unique PD Phase Resolved Pattern (PDPRP). The observed PD time-evolution trends are consistent with the state of the art knowledge on electrical treeing phenomena in nanocomposite dielectrics.

Keywords

alumina; magnesium compounds; nanocomposites; partial discharges; silicon compounds; trees (electrical); Al₂O₃; MgO; SiO₂; electrical tree partial discharges; nanocomposite dielectrics; nanocomposites; phase resolved pattern; time-evolution phenomena; tree life; Aluminum oxide; Dielectrics; Discharges (electric); Insulation; Nanocomposites; Partial discharges; Silicon compounds; Dielectric; Electrical tree; Insulation; Nanocomposite Epoxy; PDPRP; Partial discharge;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2014 IEEE Conference on

Conference_Location

Des Moines, IA

Type

conf

DOI

10.1109/CEIDP.2014.6995761

Filename

6995761