The Study Of Optimal Power Flow Based On Exterior Point Method

The paper proposed an approach using the exterior point method (EPM) for optimal power flow (OPF). The EPM algorithm has a 1.5Q super linear rate under the standard second order optimality conditions. For implementing the global convergence OPF, a global exterior point method for optimal power flow (GEPM-OPF) is constructed through combining the algorithm of backtracking line search and the EPM. The main characteristic of this method has good global convergence and fast local convergence. The GEPM-OPF was numerically implemented and tested on OPF problem from some IEEE testing systems. Numerical results show that the convergence rate of GEPM-OPF method mentioned above is verified, and the ill-conditioning of the Hessian of minimized function becomes irrelevant for the EPM once primal-dual vector enter into the neighborhood of the OPF optimum solution.