Farhad Namdari - Electrical Engineering Dept. Lorestan University Lorestan, Iran
Hamoun Poor Roshanfekr - Electrical Engineering Dept. Lorestan University Lorestan, Iran
iraj Faraji - Electrical Engineering Dept. Lorestan University Lorestan, Iran

The present study investigated economic load dispatch problem, taking into consideration valve point loading effect using an imperialist competitive algorithm. To portray the efficiency of the proposed method, the algorithm was applied to two popular test systems in the area including 13 and 40 thermal units. The obtained results from the algorithm were compared to those of other algorithms which indicated the efficiency and response of the proposed algorithm in solving economic load dispatch problem.

Economic Load Dispatch; Optimiziation Algorithm; Imperialist Competitive Algorithm; Valve Point Effect;