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Coordination Of Power System Auxillary Controllers For Damping Torsional Oscillations, Rizk Mohamed El-Sayed Hamouda

Electronic Theses and Dissertations

Technical advantages of coordinating thyristor controlled static V Ar compensators (SVC) and power system stabilizers (PSS) of turbo-generator excitation systems for the stability enhancement of an AC system during small signal dynamics are presented. The technical feasibility of the coordinated SVC-PSS scheme for simultaneous damping of the inertial and the torsional oscillatory modes in a series compensated ac system is demonstrated. The investigations show that the coordinated scheme not only increases the overall system damping, but also prevents the undesirable interactions between the oscillatory modes. New control schemes for the SVC and the PSS, based on multi-input control systems which …