Dynamic Economic Dispatch: A Review

This paper presents a review of the achievements of the optimal power dynamic dispatch problem since its inception to the present. There exist two formulations for this problem in the literature. The first formulation is the optimal control dynamic dispatch (OCDD), where the power system generation has been modelled as a control system and optimization is done in the optimal control setting with respect to the ramp rates, as input variables. The second one is a later formulation known as the dynamic economic dispatch (DED), where optimization is done with respect to the dispatchable powers of the committed generation units. In this paper we first outline the two formulations, then present an overview on the mathematical optimization methods, Artificial Intelligence (AI) techniques, and hybrid methods used to solve the problem incorporating with extended and complex objective functions or constraints. The DED problem in deregulated electricity markets is also reported KeywordsOptimization, Artificial Intelligence techniques, Dynamic Economic Dispatch, Literature review, Power Systems.