Title: ? constrained differential evolution for economic dispatch with valve-point effect

Authors: Nasimul Noman; Hitoshi Iba

Addresses: Department of Electrical Engineering and Information Systems, University of Tokyo, Tokyo 113-8656, Japan. ' Department of Electrical Engineering and Information Systems, University of Tokyo, Tokyo 113-8656, Japan

Abstract: A novel and effective method for solving economic load dispatch (ELD) problem is presented in this work by integrating the ? constrained method with differential evolution (DE) algorithm. The ? constrained method sets us free from selecting the appropriate value for the penalty coefficient in the objective function, which is difficult and often chosen empirically. Differential evolution with ? constrained method (?DE) has proven to be effective in solving non-linear constrained optimisation problems. Here, the effectiveness of ?DE, in solving ELD problems is investigated by using three different ELD problems that take the valve-point loading effect into consideration. The proposed approach provides very high quality solutions which are very competitive to other existing techniques to ELD considering the valve-point effect.

Keywords: economic load dispatch; ELD; valve-point loading effect; differential evolution; epsilon constrained methods; constrained optimisation.

DOI: 10.1504/IJBIC.2011.043607

International Journal of Bio-Inspired Computation, 2011 Vol.3 No.6, pp.346 - 357

Available online: 07 Nov 2011 *

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