Load-frequency control with disturbance accommodation

Abstract The problem of load-frequency control is investigated using disturbance-accommodation control. It is shown that the optimal accommodation of load disturbances can lead to significantly better performance than that of conventional controllers. It is further shown that the complete cancellation of all disturbance effects in the class of power systems considered is impossible. Nevertheless, the disturbance effects in system frequency can be cancelled completely. Simulation results are presented for the case of an ideal one-area system and the data clearly demonstrates the degree of performance improvement made possible by a DAC controller.