Title :
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
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;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena (CEIDP), 2014 IEEE Conference on
Conference_Location :
Des Moines, IA
DOI :
10.1109/CEIDP.2014.6995761
