Publications

Abstract : pElectrical treeing gets initiated from voids or impurities present in the volume of the solid insulating material where partial discharge occurs due to the enhanced stress. Breakdown of the insulation can be delayed if the insulation gives higher resistance to the propagation of the discharge in the form of an electrical tree. It is well understood from some of the reported experimental results that addition of nanoparticles improves the electrical properties of a base insulating material. The shape, size and percentage loading etc. of the nanoparticles play a good role in deciding the properties of the nanocomposites. Theoretical analysis for determining the influence of fillers and the dependence of its size, shape and composition on the electrical properties of the composite is limited in the literature. In this work, the electric field stress of different nanocomposites at different points in the matrix is found using Finite Element Method (FEM). From the determined stress, the propagation of electrical treeing is analysed for different nanocomposites and the properties of the fillers required for enhanced resistance to electrical treeing is identified/p