Power system control based on the identification of oscillation modes

In this paper information provided by a synchronized phasor measurements system is used to identify the emergence of low damped oscillation, to select control parameters and to provide input signals to the controllers. Prony analysis is used for the oscillation modes identification. A gain-schedule control allows the selection of the parameters of a central controller according to the identified modes and mode shapes. The control parameters for selected operating points are determined by a nonconvex, nonsmooth optimization method.