Estudo técnico de planejamento para recapacitação de linha de transmissão via simulação ANAREDE

Abstract

The continuous growth in electricity demand in Brazil poses significant challenges to the power transmission infrastructure. In particular, existing lines located in densely populated urban areas face difficulties in the expansion of traditional networks due to restrictions on opening new easement corridors. In this context, this study proposes the analysis and uprating of a radial transmission system supplying the municipality of Porangatu (GO), aiming to enhance the reliability and transmission capacity between the PORANG-GO069 and PORANG-GO138* substations. The case study was conducted through computational simulations using the ANAREDE software, analyzing power flow, voltage levels, and loading for future projections up to the year 2054. The results indicated that the current configuration experiences overloads exceeding 20% in certain scenarios, highlighting the need for intervention. The replacement of conductors with higher ampacity ACSR cables (477 MCM, 605 MCM, and 795 MCM) enabled up to a 35% increase in transmission capacity, ensuring compliance with future loading demands and eliminating issues related to undervoltage and overload. As a practical implication, the adoption of the proposed solutions can extend the service life of the existing infrastructure, minimize the need for costly new transmission lines, and ensure the safe and efficient continuity of power supply in the region. Failure to implement corrective measures may lead to severe operational restrictions, compromising the stability and reliability of the regional power system.