Economic Scheduling of Generation for Planning Studies

A procedure for determining economic schedules of generation for use in planning studies involving large systems is presented. These schedules are achieved by combining a load flow and dispatching routine with the calculation of incremental losses. The predominate feature is the technique used to calculate the incremental losses. Whereas previous methods required the inverse of the nodal admittance matrix for the inclusion of system losses, this operation has been replaced with a linear iterative scheme. As a result, this procedure is particularly suited to large systems.