A novel Tilt Integral Derivative plus Second Derivative Order for Load Frequency Control problem in power system

In this paper, a new fractional control scheme named as Tilt Integral Derivative with Filter plus Second Derivative Order (TIDFD
²
) has been proposed for the first time on the Load Frequency Control (LFC) problem in interconnected power system. Investigations were carried out on a three area reheat-thermal power plant taken into consideration the effect of some non-linear constraints. The controller parameters has been tuned using a powerful optimization technique known as Differential Evolution (DE) Algorithm. The Integral of the Squared Error (ISE) is used as a performance index. The advantage of the proposed controller has been confirmed by comparing the results with recently published papers in the LFC domain such as PI
^λ
DF and TIDF. Finally, the robustness of the proposed controller is examined alongside parametric variations and higher load disturbance. Obtained results showed a good performance in terms of settling time and peak overshoots.