In this work, various controllers, such as hybrid PID with Filter & Fractional-Order PD (hPIDN-FOPD), hPIDN-PD and PID are recommended for frequency control problems. The analysis is prepared for 2 electrical power system (PS) models i.e. 2-area and 3-area thermal systems with physical restraints. The benefit of the suggested Differential Evolution (DE) based hPIDN-FOPD controller has been shown by relating its performance with some newly published approaches, like Bacteria Foraging Optimization Algorithm (BFOA), Genetic Algorithm (GA), Firefly Algorithm (FA) and hybrid BFOA & Particle Swarm Optimization (hBFOA-PSO) techniques. The recommended approach is supplementarily investigated to a 3-area thermal PS with nonlinearity. The analysis reveals on the comparison that DE based hPIDN-FOPD offers improved results related to PID, hPIDN-PD and newly available FA tuned PID controller. The experimental authentication with the Hardware-in-the-Loop (HIL) real time (RT) simulation carried out on the OPAL-RT-OP5700 simulator.