Belati, Edmarcio Antonio (Universidade de São Paulo);

Souza, Alessandra Macedo de (Universidade de São Paulo);

Baptista, Edméa Cássia (Universidade Estadual Paulista);

Costa, Geraldo R. M. da (Universidade de São Paulo).

Pesquisa Operacional; volume 25, número 3, páginas 465-478. Dezembro 2005.

sensitivity analysis;

optimal power flow problem;

perturbation;

Karush-Kuhn-Tucker conditions.

We propose in this work an approach for solving the perturbated Optimal Power Flow (OPF) problem. The methodology consists in the use of sensitivity analysis to estimate new solutions after occurring some perturbations in the problem starting from optimal solution obtained via an OPF program. These perturbations consist in loading variations in some busses 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 perturbated OPF problem.