Cable Line Parameters Calculation of 6-10 kV Networks with the Usage of Comsol Multiphysics Software

At the present time in Russia most of electrical energy is distributed to consumers via 6-10 kV cable networks. Accidents in distribution cable networks of 6-10 kV are almost 70% of all industrial and domestic consumers electric power supply interruptions. As rule, these accidents are accompanied by significant economic losses [2]. Cable networks of 6-10 kV include approximately 95% of three-core cables with impregnated-paper insulation (IPI) [3]. One of the major causes of accidents is obsolescence and physical deterioration of cable lines with IPI, which is equal to 40-90% [1], [4]. In view of this, increasing of distribution cable networks operational integrity is one of the primary factors of the power supply reliability improvement.