Investigating the Impact of Characteristics on Transient Power System Stability During Fault: A Case Study of Peerdawd Power Station

This study focuses on investigating the performance of the Power System Stabilizer (PSS) and the Excitation Control System during a three-phase fault with a duration of 2 seconds. Additionally, it examines the impact of different load types (light, normal, and heavy loads) on the PSS performance during transient conditions resulting from the fault. The Peerdawd Gas Power Station (PPGS) in North Iraq is used as the dynamic model for the study, incorporating the aggregated Excitation Control System (Ex2100) and the Power System Stabilizer (PSS2B). To compare the performance of the conventional power system stabilizer (CPSS) and the modern power system stabilizer (PSS2B), transient stability parameters such as damping ratio (;), settling time (ts), and maximum overshoot (MP%) are analyzed. The simulation program utilizes MatlabTM/Simulink. The results of the study provide valuable insights into how load variation influences system damping based on the Power System Stabilizer (PSS).