Power System Small-Signal (Low-Frequency Oscillation) Stability Analysis

This MATLAB/SIMULINK-based study analyzes small-signal (low-frequency oscillation) stability in simple power systems through four key approaches: 1) Building system simulation models using SIMULINK blocks and parameter configuration 2) Comparative analysis of AVR and PSS impacts on stability using controlled simulation scenarios 3) Root locus plotting for exciter gain KA and PSS gain KSTAB with stability margin evaluation 4) Rotor speed response simulation under 5-step voltage reference changes with/without PSS implementation