Paralleled optimal power flow algorithm based on subarea division of the power system

With the continuous expansion of the grid scale, the traditional centralized optimal power flow calculation has the difficulties of long computing time and higher dimension matrix. This paper presents a paralleled optimal power flow algorithm based on subarea division, which divides the actual grid into several independent subareas geographically according to the decomposition and coordination method, and uses the auxiliary problem principle (APP) in parallel computing. In each subarea, the multicenter-correction interior point method is used to solve the optimization problem of the subarea system. The example shows that the algorithm has good convergence and faster computing speed.