Avaliação de contingências na linha de transmissão de 400 kv do projeto Temane Maputo (ttp) com a integração da Central Térmica de Temane (ctt)

Abstract

The growing demand for electric power and the need to strengthen the security and reliability of Mozambique's power system have driven the implementation of the Temane–Maputo Project (TTP), which includes the construction of a 400 kV transmission line and the integration of the Temane Thermal Power Plant (CTT). This work aims to analyze the contingencies that may occur in the Southern Mozambique Power Grid with the commissioning of this new infrastructure. The evaluation focuses on potential operational impacts such as line overloads, voltage deviations, and loss of stability under failure conditions in critical network components. To achieve this, simulation tools are used—particularly the PowerWorld Simulator software—which allows modeling of the system before and after the integration of the CTT and the TTP transmission line. Both single (N-1) and multiple contingency scenarios are analyzed, identifying vulnerable points, limitations of the existing grid, and possible needs for reinforcements or operational adjustments. The results obtained provide relevant technical insights for network planning and operation, ensuring that system expansion occurs in a safe, efficient, and sustainable manner. This study also contributes to a deeper understanding of the importance of contingency analysis in the context of national grid expansion, especially in regions where the network topology is limited and sensitive to significant structural changes.