Power System Stabilizers and their Design Techniques for Power System Damping Using Optimization Methods

This paper presents a detailed clarification of the occurrence of low frequency oscillations experienced in power systems. A brief account of the present practice of providing fixed gain power system stabilizers (PSS) is followed by a summary of some of the recent design proposals for optimization PSS. Hence, it is necessary to use, most efficient optimization methods to take full advantage in simplifying the trouble and its implementation. A novel PSS based on the effort of cancelling the negative damping torque produced by the automatic voltage regulator (AVR) is presented. Along with some recent studies on a multi-machine system is using a location identification technique.