Indian Journal of Science and Technology
Year: 2011, Volume: 4, Issue: 4, Pages: 379-383
Sayed Mojtaba Shirvani Boroujeni*, Reza Hemmati, Hamideh Delafkar and Amin Safarnezhad Boroujeni
Power system stabilizers (PSS) are used to generate supplementary damping control signals for the excitation system in order to damp the low frequency oscillations (LFO) of the electric power system. The PSS is usually designed based on classical control approaches but this conventional PSS (CPSS) has some problems. To overcome the drawbacks of CPSS, numerous techniques have been proposed in literatures. In this paper a PID type PSS is considered for damping electric power system oscillations. The parameters of this PID type PSS are tuned based on particle swarm optimization method. The proposed PSS (PSO-PSS) is evaluated against the conventional power system stabilizer (CPSS) at a single machine infinite bus power system considering system parametric uncertainties. The simulation results clearly indicate the effectiveness and validity of the proposed method.
Keywords: Electric power system stabilizer, low frequency oscillations, particle swarm optimization
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