This paper presents the implementation of the integral-double derivative with filter (IDDF) controller based on the donkey and smuggler optimization algorithm (DSA) for regulating the frequency of the interconnected power system (IPS). The functioning of the IDDF is tested on a multi-area simple thermal hydro system (MASTH) for the instance of impressing area-1 with the perturbations of 10% step load (SLP). However, the sovereignty of the IDDF is validated with other widely accepted controllers. Further, the high voltage DC (HVDC) line is laid with the MASTH for achieving better dynamical performance. The inclusion of the HVDC line improves MASTH dynamical performance, as shown by the simulation results. Ultimately, the proposed control mechanism robustness is validated by targeting, at various loadings, the MASTH with HVDC line under the DSA-based IDDF and revealed that the implemented strategy is robust at the secondary as well as at the territory level.