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Genetic algorithms based economic dispatch with application to coordination of Nigerian thermal power plants

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4 Author(s)
G. A. Bakare ; Electr. Eng. Programme, Abubakar Tafawa Balewa Univ., Nigeria ; U. O. Aliyu ; G. K. Venayagamoorthy ; Y. K. Shu'aiba

The main focus of this paper is on the application of genetic algorithm (GA) to search for an optimal solution to a realistically formulated economic dispatch (ED) problem. GA is a global search technique based on principles inspired from the genetic and evolution mechanism observed in natural biological systems. A major drawback of the conventional GA (CGA) approach is that it can be time consuming. The micro-GA (μGA) approach has been proposed as a better time efficient alternative for some engineering problems. The effectiveness of CGA and μGA. to solving ED problem is initially verified on an IEEE 3-generating unit, 6-bus test system. Simulation results obtained on this network using CGA and μGA validate their effectiveness when compared with the published results obtained via the classical and the Hopfield neural network approaches. Finally, both GA approaches have been successfully applied to the coordination of the Nigerian 31-bus system fed by four thermal and three hydro generating units. Herein, use has been made of the loss formula developed for the Nigerian system from several power flow studies. For the Nigerian case study, the μGA. is shown to exhibit superior performance than the CGA from both optimal generation allocations and computational time viewpoints.

Published in:

IEEE Power Engineering Society General Meeting, 2005

Date of Conference:

12-16 June 2005