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 (TIDFD2) 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 PIλDF 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.