Determination of the optimal solution of the problem of optimal power flow by sensitivity analysis

We propose in this work an approach for solving the perturbed Optimal Power Flow (OPF) problem. The methodology consists in the use of sensitivity analysis to estimate new solutions after some perturbations occurring in the problem starting from optimal solution obtained via an OPF program. These perturbations consist in loading variations in some buses of the system. The sensitivity analysis technique is based on the information of second order and in the Karush–Kuhn–Tucker conditions. The obtaining of the solutions after the occurrence of perturbations in the system is direct and it doesn't need initial parameters and correction parameters as other methods like penalty and barrier used in the conventional OPF programs need. The numerical results demonstrate the potential of this methodology for the solution of the perturbed OPF problem.