AGC Tuning of an Inter-Connected Power System after Deregulation Using PSO

Abstract: Automatic generation control (AGC) of an inter-connected power system provides power demand signals for AGC power generators to control frequency and tie-line power flow due to the large load changes or other disturbances. Occurrence of large megawatt imbalance causes large frequency deviations from its nominal value which may be a threat to secure operation of power system. It is important to suppress the disturbances by the coordination of governor systems .So, it is necessary to use secondary controller to increase the stability and performance of the AGC system. This paper provides an overview for the researcher of control strategies, as well as their current use in the field of AGC problem using Particle Swarm Optimization (PSO). The proposed PSO based controller is compared against conventional I-controller and the performance of the proposed controller is found better than the conventional method. Simulations have been performed using Matlab.

Keywords: AGC (Automatic Generation Control), Deregulated Power System, Particle Swarm Optimization (PSO), PID Controller, Area Control Error (ACE).