Solution of Different Types of Economic Load Dispatch Problems Using a Pattern Search Method

Al-Sumait, J.S., Sykulski, J.K. and Al-Othman, A.K. (2008) Solution of Different Types of Economic Load Dispatch Problems Using a Pattern Search Method. Electric Power Components and Systems, 36, (3), 250-265.


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Direct search (DS) methods are evolutionary algorithms used to solve constrained optimization problems. DS methods do not require information about the gradient of the objective function when searching for an optimum solution. One such method is a pattern search (PS) algorithm. This study presents a new approach based on a constrained PS algorithm to solve various types of power system economic load dispatch (ELD) problems. These problems include economic dispatch with valve point (EDVP) effects, multi-area economic load dispatch (MAED), companied economic-environmental dispatch (CEED), and cubic cost function economic dispatch (QCFED). For illustrative purposes, the proposed PS technique has been applied to each of the above dispatch problems to validate its effectiveness. Furthermore, convergence characteristics and robustness of the proposed method has been assessed and investigated through comparison with results reported in literature. The outcome is very encouraging and suggests that PS methods may be very efficient when solving power system ELD problems.

Item Type: Article
ISSNs: 1532-5008
Keywords: ELD, DS method, PS method, evolutionary algorithms, optimization
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 265276
Accepted Date and Publication Date:
1 March 2008Published
Date Deposited: 04 Mar 2008 14:33
Last Modified: 31 Mar 2016 14:10
Further Information:Google Scholar

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