Design of an All-Dielectric Self-Supporting cable System

All Dielectric Self-Supporting (ADSS) cables are installed along with transmission line for the purpose of communication. During installation the outer layer of the cable is hydrophobic and is not prone to dry band arcing. But, these cables becomes less hydrophobic over time and therefore vulnerable to dry band arcing. This loss in hydrophobicity occurs because of the contamination formed on the outer layer due to pollution. This is one of the reasons for cable failure. Considerable amount of losses will be incurred on the occurrence of a cable failure as these cables are leased to other companies. In this paper typical models are shown and their corresponding voltage distribution and current distribution are calculated. This could be used to predict dry band arcing on the models. The method used considers sag, span and pollution on the ADSS cable.