Fractional Calculus Based PID Controller Tuned by SMO for LFC Application

摘要

In this investigation, to regulate the frequency a hybrid model having two area (thermal-hydro-wind & thermal-hydro-diesel) along with fractional order proportional integral derivative (FOPID) controller under MATLAB environment has been modelled. Further, the gain parameters of the offered controller are tuned with the help of recently introduced spider monkey optimization technique (SMO) by iterative method with ITAE (integral time absolute error) as the cost/objective function. At first, the modelled system is verified with the presence of AC tie-line. Further sensitivity comparative analysis has been done by amplifying the loading of the system by 15% with SMO tuned classical PID controller and offered FOPID controller. Finally, investigation of vigorous responses reveals that SMO tuned FOPID controller yield minimum oscillations on the basis of overshoot and undershoot as well as least settling time as compared to PID controller under above-mentioned circumstances.