Effect of the density and the position of the microvoids on the electrical constraints in the insulation of medium-voltage cables

摘要

The main contribution of this paper is to investigate the influence of the density microvoids and their layout positions on the electrical constraints in the insulation of medium-voltage cables using numerical simulation. The simulation is based on the numerical resolution of the Laplace’s equation by the finite element method (FEM). The electrostatic pressure and the elongation of the microvoid are calculated. The electrical and electromechanical constraints are determined for one, two and three microvoids.