Power system stabilizers (PSSs) are devices used in electrical power systems to enhance the damping of power system oscillations and improve stability. They achieve this by providing additional control signals to the excitation system of synchronous generators, which helps maintain the voltage stability and overall performance of the power grid. In the context of wide-area control strategies, PSSs play a vital role in coordinating control actions across large geographical areas to effectively manage system dynamics and prevent disturbances from propagating.
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