Coordination analysis of protection relay settings utilizing particle swarm optimization method

Cempaka Substation becomes one of the existing electricity distribution systems in South Kalimantan. As a transmission line, a reliable protection system is required having s proper relay coordination, thus indicating thereby optimizing the electricity distribution. This study aims to navigate the value of the relay setting, optimization is required to find the optimal value for the relay setting. The optimization applied is Particle Swarm Optimization (PSO) to produce optimal values for relay settings. The calculation is conducted with the help of MATLAB software. The result of the calculation presents the value of the time dial setting (TDS) and the value of the pickup current (Ip). Furthermore, the value from the calculation results is entered into the simulation utilizing ETAP software in order to navigate the results of the protection relay setting when a disturbance occurs. The standards which are applied as references in this study include local standards or international standards such as SPLN, IEC 60947. Thus, from the research that was performed conducted, the distance between the primary relay and backup was 1.2 seconds fulfilling the standard of a reliable protection system of 0.3 seconds.