This study focuses on ensuring the operational stability of the national interconnected power system of Ecuador through the analysis of transients and the efficient design of the network through the operation of capacitor banks at 230 kV voltage levels at the Esclusas substation. The ATP Draw tool was used for the modeling of critical scenarios in which the energization of the capacitor banks (first pass and back-to-back), connection and disconnection maneuvers and nearby short circuits are contemplated. Strategies to reduce transients such as pre-insertion resistors and synchronized maneuvers were analyzed, demonstrating that preinsertion resistors reduced inrush currents by 76.45% while the synchronized control maneuver reduced the frequency oscillations by 73.92%. In addition, it was demonstrated that the switches under study were able to withstand the transients without the implementation of additional reactors. In conclusion, the importance of coordinating the design of the electrical power system and the operation to avoid overloads, guaranteeing safety, prolonging the useful life of the equipment and providing recommendations for efficient system management of the system.