Patent ID: 6775597
Filing Date: 2004-08-10
Classification: G06F,G06Q

Abstract:
A security-constrained optimal power flow (OPF) method of operating a power system, comprising the steps of:determining power flows for a base case operation and at least one contingency case operation of the power system; linearizing an optimal power flow (OPF) problem formulation; linearizing incremental network models for the base case and the at least one contingency case; determining a solution based on the linearized OPF problem and the linearized incremental network models; determining incremental control variables; updating control variables with the incremental control variables; determining power flows for the base case and the at least one contingency case using the updated control variables; comparing the incremental control variables to a preselected threshold value and if the incremental control variables exceed the threshold, then repeating the previous steps; and controlling the power system in accordance with the control variables.