Solution techniques for optimal power dispatch problems-A review

Optimal power dispatch is an optimization procedure to determine the schedule of generating units to serve the power demand while meeting the system constraints. It usually aims to minimize the generation cost or emission amount of generating units. Several constraints of the system such as generation limits, prohibited operating zones, and ramp rates of generating units and transmission security constraints are usually considered in the optimal power dispatch problems. This paper presents the attempts to get the optimal schedule of generators. The optimal power dispatch is discussed either as a single objective or as a multi-objective problem. In each case, the methods of optimization and the solution methodologies are presented.