Application of Harris Hawks Optimization in Single Objective Optimal Power Flow

One of the most important issues in power systems that should be considered for the best planning, operation, and energy management is optimal power flow (OPF). Numerous metaheuristic optimization techniques have been proposed to address OPF issues. Recently developed is a meta-heuristic technique known as Harris Hawks Optimization (HHO), which was inspired by the behavior of Harris Hawks. Finding the best objective functions, including fuel cost, emissions, active power losses, and voltage deviation across all buses, is the main focus of this work. The real power of generators (with the exception of the swing bus generator), voltage magnitude at the PQ bus, source VAR compensations, and tap changer setting at the transformers are the control variables that must be set in order to achieve the best objective function. IEEE 57-bus power test is the standard grid that has been used by Harris Hawks Optimization (HHO) to demonstrate its superiority and efficacy in power system applications. The objective function comparison results showed the superiority of Harris Hawks Optimization (HHO) in providing better solutions than known algorithms described in the literature.