Optimal coordinated design of PSS and TCSC-Based stabilizer using particle swarm optimization algorithm for damping oscillation

Abstract

The interconnection between distant located power systems is now a common practice, which gives rise to low frequency oscillations LFO. Therefore, with this expansion has become, only use of conventional stabilizers cannot provide an adequate damping of LFO. FACT damping controllers are available for providing suitable damping for these oscillations. This paper, presents the simultaneous coordinated designing of the multiple damping controllers between PSS and TCSC-based stabilizer in a single-machine infinite-bus power system, the coordinated design problem of multiple damping controllers is formulated as an optimization problem. Particle Swarm Optimization algorithm PSO is applied in order to search optimal controlling parameters by maximizing the objective function based on the eigenvalue. The simulation results for a wide range of operation condition, show that the coordinated designing able to provide better damping and stability performance.