Characterisation of partial discharges in mineral oil
Résumé
This paper deals with the characterisation of the partial discharge currents generated in mineral oil and their consequences. The shape of these currents, the associated electrical charges and energies are analysed in function of the number of discharges, the electrode geometry and the applied voltage. Chromatographic analyses in gaseous phase of oil samples submitted to partial discharges are achieved. The energy levels of the partial discharges are investigated as well as the types and concentrations of gases that they can generate.