Performance of Insulation Materials to Enhance Grading Method Effect in High Voltage Cable

In today`s life using of high voltage cables increase day by day. One of the key factors in insulating is the stress distribution that is the determining factor of the age of these cables. In this paper, we work on capacitance grading method and show how the choice of material could change the stress distribution. We use three different common materials in each situation and compare them to find the best group of material to use in this sample high voltage cable. To have a good insight and a trustworthy comparison between these groups of materials we use finite element method that widely used nowadays for analyzing the electric stress in the cable insulation.