Técnicas de recapacitação para linhas de transmissão: análise e aplicação

Abstract

The demand for electricity has grown exponentially, driven by economic development, technological advancement, and population growth. In Brazil, many transmission lines installed in past decades are nearing the end of their useful life, making modernization a priority. This paper analyzes the main techniques for upgrading transmission lines, their practical applications, and the impacts of new regulatory standards in the sector. The techniques discussed include the reduction of insulator strings, retensioning, structure alteration, reconductoring, the addition of more subconductors per phase, modification of operating voltage, transformation of suspension strings to semi-tension, and the insertion of structures in spans. The case study of the 230 kV Cachoeira Dourada - SE Anhanguera C1 transmission line demonstrates the effectiveness of these techniques in improving the capacity and efficiency of electrical infrastructures. The analysis of the challenges faced and the lessons learned highlights the importance of detailed inspections, rigorous planning, and the use of advanced technologies.