Oscillation Control in Aceh System Under Disturbances: A Case Study

This study examines the dynamic response of the Aceh power system under disturbances, focusing on oscillation control. The primary concern is the critical damping of generator rotor angle modes, which can either be oscillatory or fully damped. Damping reduction is problematic as it prolongs oscillations, adversely affecting system stability. The eigenvalues and participating modes during disturbances are analyzed to determine the optimal strategy for enhancing system stability. Various operational scenarios and Power System Stabilizer (PSS) tuning methods are evaluated through dynamic simulations. The results demonstrate that tuning PSSs on all units at the Nagan Raya power plant yields the most effective improvement in system response, reducing oscillation duration and enhancing overall stability.