Effect of the Dielectric Inhomogenity Factor's Range on the Electrical Tree Evolution Solid Dielectrics
Hemza Medoukali, Mossadek Guibadj, Boubaker Zegnini
DOI: 10.15598/aeee.v14i5.1789
Abstract
The main contribution of the presented paper is to investigate the influence of the Dielectric Inhomogeneity Factor on the electrical tree evolution in solid dielectrics using cellular automata. We have a sample of the XLPE which is located between needleto-plane electrodes under DC voltage. The electrical tree emanates from the end of the needle in which the electric stress attains a dielectric strength of the material. At every time step, Laplace’s equation is solved to calculate the potential distribution which changes according to electrical tree development. Dynamic simulations clearly demonstrate the influence of the range of the Dielectric Inhomogeneity Factor on the electrical tree growth. Simulation results confirm the published technical literature.