A comprehensive review: optimal capacitor placement and sizing in a distribution system

In the last few years, electricity demand increased globally, as a result, losses are also increased in the power system. Capacitors are used in the power system at shunt state to minimize these power losses. Several analytical, heuristic and their combinational approaches have been proposed in the literature for the optimal capacitor placement problem. In this paper, the analytical, heuristic-based methods, and their combinational approaches are considered, reported in the literature for the optimal capacitor placement, and the objective is to provide a comprehensive review while considering the objective functions (minimization of power losses, and capacitor cost and maximization of net saving). To express each review effectively, details are tabulated in the form of load flow process, system constraints, analytical methods, Type of capacitors and loads, system considered (IEEE, Local), outcomes in terms of minimization and maximization