Smart Stabilization Techniques in Power Systems

A power system stabilizer (PSS) installed in the excitation system of the synchronous generator improves the small-signal power system stability by damping out low frequency oscillations in the power system. It does that by providing supplementary perturbation signals in a feedback path to the alternator excitation system.In our project we review different conventional PSS design (CPSS) techniques along with modern adaptive neuro-fuzzy design techniques. We adapt a linearized single-machine infinite bus model for design and simulation of the CPSS and the voltage regulator (AVR). We use 3 different input signals in the feedback (PSS) path namely speed variation(w) Electrical Power (Pe) and integral of accelerating power (Pe*w) and review the results in each case.For simulations we use three different linear design techniques namely root-locus design frequency-response design and pole placement design; and the preferred non-linear design technique is the adaptive neuro-fuzzy based controller design.The MATLAB package with Control System Toolbox and SIMULINK is used for the design and simulations.