Evaluation of the Profitability of High Temperature Low Sag Conductors

The application of High-Temperature Low Sag conductors is one of the possible methods for improving the existing transmission network nowadays, especially if the transmission network requires prospective expansion of new electrical connections. The purpose of the study has been to evaluate conductors of conventional core designs like AS, ACSR and composite core designs like ACCC and ACCR on the basis of the technical and the economic criteria, and to establish which of these conductors would be preferable for upgrading the existing network. The comparative evaluation was based on an existing overhead line model of the Latvian power network. The results of the analysis are presented in this paper.