Mixed integer linear programming formulation for optimal reactive compensation and voltage control of distribution power systems

This work proposes a mixed integer linear programming (MILP) formulation, based on a linear power flow that has recently been proposed in the literature, for the reactive power compensation of distribution networks through the optimal selection of capacitor banks (CB) as well as the optimal tap selection of voltage regulators (VRs) and on load tap changers (OLTCs) in order to maintain the system voltages within bounds. In the proposed formulation the voltage dependent load model is taken into account and the objective is to minimize the supply energy cost on a day-long time period. In order to evaluate the proposed model, several simulations are shown for a 34-bus radial distribution system. The results are duly discussed.