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R. Ouiddir, M. Rahli and L. Abdelhakem-Koridak
Power Systems Optimization Laboratory
Faculty of Electrical Engineering
University of Science and Technology of Oran
El M'naouer, Oran, 31000 Algeria
E-mail: ouiddir@hotmail.com
E-mail: {rahlim, hkoridak}@yahoo.fr
A genetic algorithm is used to solve an economic dispatch problem. The chromosome
contains only the encoding of a normalized incremental cost system. Therefore, the
total number of bits of a chromosome is entirely independent of the number of units. In
the first case, the transmission line losses are calculated using the Newton-Raphson
method and kept constant. In the second case, the transmission line losses are considered
as a linear function of the real generated power. The coefficients are calculated using the
Gauss-Seidel method. This method has been applied to the western part of the Algerian
power network, and the results have been found to be satisfactory compared with other
results obtained using classical methods.
Received July 30, 2003; revised November 21, 2003 and March 25, 2004; accepted August 9, 2004.
Communicated by Chin-Teng Lin.