This work focused on the analysis and improvement of the electrical protection system of the Chasqui-San Agustín feeder of 13.8 kV. An exhaustive diagnosis of recurrent faults and the coordination of current protection devices was carried out, using DIgSILENT software to simulate various demand scenarios. The simulation results showed the need to adjust the parameters of the overcurrent relays to ensure selective and coordinated action. The implemented adjustments improved the reliability and resilience of the system, reducing service interruptions and infrastructure damage, The results demonstrate that the system maintains a consistent actuation time of 0.21 s for both the 80 and 100% failure scenarios, indicating stable response under high and full load conditions. In contrast, the response time drops significantly to 0.010 s in the 0% failure scenario, suggesting a much quicker system reaction possibly due to lower energy processing needs or simpler system management. These findings imply that the system is designed to consistently handle varying load conditions efficiently, improving markedly under minimal stress, which may reflect a strategic emphasis on safety and operational efficiency.