Das, M. K.2025-02-212025-03-312025-02-212016-10-01https://doi.org/10.1109/icicpi.2016.7859690https://dspacenew8-imu.refread.com/handle/123456789/2160The paper presents the application of proportional-integral (P-I) Controller for the discrete mode Automatic Generation Control (AGC) problems in the deregulated environment. Governor dead-band non-linearity has been considered in a two area deregulated power system while designing the P-I controller. Imperialist Competitive Algorithm (ICA) has been used for optimizing the gains of P-I controller and the dynamics responses are compared with and without considering optimized values of the controller gains. Simulation results show that P-I controller optimized using ICA gives better dynamic performances compared to P-I controller without optimized using ICA.enAutomatic Generation Control, Area Control Error, Imperialist Competitive Algorithm, P-I controllerArticle