Abstract
This paper presents a coordinated control of a STATCOM and a Power System Stabilizer (PSS) for damping the low frequency electromechanical oscillations in a single machine infinite bus (SMIB) system. A model is developed which is subsequently linearized to form a state space model. The STATCOM control is based on modulation index and the phase angle control through pulse width modulation (PWM) technique. The controller parameters both for STATCOM and PSS are optimized using particle swarm optimization (PSO) algorithm using an eigenvalue based objective function. The optimized gains are then used in non-linear simulations developed in MATLAB to demonstrate the effectiveness of different control methodologies.
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