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Dynamic economic dispatch (DED) is an important dynamic problem in power system operation and control. The objective of the problem is to schedule power generation for the online units over a time horizon, satisfying the unit and ramp rate constraints. In this paper, artificial bee colony (ABC) algorithm is used to solve the dynamic economic dispatch problem for generating units with valve-point effect. The feasibility of the proposed method is validated with ten-and five-unit-test systems for a period of 24 hours. In addition, the effects of control parameters on the performance of ABC algorithm for DED problem are studied. Results obtained with the proposed approach are compared with other techniques in the literature. The results obtained substantiate the applicability of the proposed method for solving DED problems with nonsmooth cost functions in terms of solution quality and computation efficiency.

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