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Abstract

This paper presents a harmony search optimization (HSO) based method for solving multi-area economic load dispatch problem with a view of obtaining the global best solution. HSO, mimics the improvisation process of music players, is one of the evolutionary computing models for solving multimodal optimization problems. Each harmony is defined to denote the real power generations of all the generating units and a fitness function representing the problem objective is formulated. A repair mechanism is suggested to handle generation limit and prohibited operating region constraints. The proposed method is tested on a two area economic load dispatch problem and the results are presented.