Software package for polymeric power cable system design

As High voltage cables mainly used in congested locations such as down towns, laying cables in many locations were affected by the existing underground services i.e. gas, water, .etc. The executed cable routs may widely differ than that originally planned due to un-documented underground difficulties. In addition to that cable arrangement may get changed due to similar circumstances and/or due to narrower corridor. In 220 Kv cable network in Tripoli-Libya, contractor and designer of the system had to re-route the cables in few sections and change the cable arrangement from triangle to flat in few other sections. A proper software recalculates the effect of change laying condition on the cable performance would be highly appreciated. This paper presents a developed software package calculates the minimum cross section area required for a given power network and calculates exact ampacity, induced voltage and permissible value of short circuit current according to the laying conditions in the given region.