ANALYSIS OF GRADING TECHNIQUES IN XLPE CABLE INSULATION BY FEM

In today’s world, the use of high voltage cables is increased day by day. High voltage cables are used for the transmission and distribution of electric power. XLPE insulation is widely used now a day. Stress distribution in the insulation is the important factor for the determination of the life of the cable. Grading methods like capacitance grading and inter sheath grading are used for the linear stress distribution in the insulation and for other advantages. Finite element method is widely used method for the analysis of the electric stress and field inside the cable insulation. This paper contains the analysis of these two methods in XLPE cable using finite element method.