Chaotic analysis of Partial Discharge(CAPD)

Abstract

In connection with the monitoring of insulation degradation of large power apparatus in order to predict thier expected service failures, a statistical treatment, such as phase resolved partial discharge analysis(PRPDA), has been established for the on-line monitoring system during the past decades. However, this method has shown some inconveniences to identify the nature of PD source in power apparatus. Moreover, because all discharge pulses are superimposed within a certain number of phase windows, no correlation between pulses in the same or different cycles of the applied voltage is taken into account. In this regard, a novel approach based on the chaotic time series analysis technic(CAPD) is proposed.