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Improved differential evolution algorithms for handling economic dispatch optimization with generator constraints
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DOI：10.1016/j.enconman.2006.11.007.png)
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Abstract
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Global optimization based on evolutionary algorithms can be used as the important component for many engineering optimization problems. Evolutionary algorithms have yielded promising results for solving nonlinear, non-differentiable and mufti-modal optimization problems in the power systems area. Differential evolution (DE) is a simple and efficient evolutionary algorithm for function optimization over continuous spaces. It has reportedly outperformed search heuristics when tested over both benchmark and real world problems. This paper proposes improved DE algorithms for solving economic load dispatch problems that take into account nonlinear generator features such as ramp rate limits and prohibited operating zones in the power system operation. The DE algorithms and its variants are validated for two test systems consisting of 6 and 15 thermal units. Various DE approaches outperforms other state of the art algorithms reported in the literature in solving load dispatch problems with generator constraints. (C) 2006 Elsevier Ltd. All rights reserved.
Keywords:
differential evolution algorithm
economic dispatch
generator constraints
optimization
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10.9
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