Electromagnetic and thermal analysis of high voltage three-phase underground cables using finite element method

In this paper a three core high-voltage underground cable used for urban power networks is analyzed by means of Finite Element Method. The electrical analysis is performed in order to investigate the electric stress within the cable, also in presence of defect in the insulation layer. The electro-thermal analysis permits the full description of the cable behavior not only in terms of electric and magnetic performances, but also regarding the effect of the Joule heating on the surrounding ambient.