DefinePK

Abstract

In polymeric insulation system electrical treeing phenomenon is the significant cause for the failure of the insulating material. The treeing phenomenon in insulators is strongly related to the type of insulator and the nature of flaw in the insulator during the manufacturing process. In this research Epoxy resin samples are prepared to carryout electrical treeing studies under High alternating electric fields of power frequency (50Hz). Needle plane electrode configuration is used to investigate the electrical tree growth characteristics. Partial discharge (PD) patterns during the initiation and propagation are obtained from PD measurement system. The correlation between the electrical tree propagation and the Partial discharge phenomenon is discussed. The morphological patterns during the tree growth are studied and the physical aspects of degradation during tree growth are analyzed in correlation with the partial discharge patterns obtained during the treeing process.