Yoakim Simamora, Mega Silfia Dewy, Agnes Irene Silitonga
Power system protection refers to the measures and devices designed to protect components and equipment within the power system from disturbances and damage. This includes protection against abnormal conditions such as short circuits, overcurrent, and other disturbances that can threaten the safety of the system, equipment, and operators. The purpose of power system protection includes several important aspects, among others equipment Security, protecting electrical equipment such as generators, transformers, and lines from damage due to disturbances, such as short circuits or overloads.. The renewal of the overcurrent relay and phase-to-ground fault relay settings in the protection system at hydroelectric power plants jelok is very necessary because there has been no update to the settings since hydroelectric power plants Jelok was established in 1935. Then the coordination between relays can be analyzed using the current versus time plot curve in the ETAP 12.6 program. The relay setting in this study is considered reliable because the curve lies within the safe limits, specifically to the right of the full load current and transformer inrush lines, and to the left of the damage curve line. © 2025 IEEE.
Universitas Negeri Medan, Electrical Engineering Department, Medan, Indonesia
