Abstract
This paper proposes a fractional order PID (FOPID) controller for the supplementary automatic generation control (AGC) of a single area thermal power system having non-reheat turbines. The parameters of fractional PID controller are determined using genetic algorithm (GA). The effectiveness of the proposed controller is established by comparing its performance with the conventional integer order integral, PI and PID controllers based AGC. The investigations reveal that the proposed fractional order controller is better than the integer order controllers in terms of settling time, peak overshoot, steady state error and mean of sum of squared errors (MSSE).
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