Kinetic gas molecule optimization for nonconvex economic dispatch problem

• This paper presents KGMO algorithm to solve economic dispatch problems.
• The effectiveness of KGMO has been verified on four different ED problems.
• It is found that KGMO based approach is able to provide better solution.

This paper presents kinetic gas molecule optimization (KGMO) algorithm to solve economic dispatch problems with non-smooth/non-convex cost functions. KGMO is based on kinetic energy and the natural motion of gas molecules. The effectiveness of the proposed method has been verified on four different non-convex economic dispatch problems with valve-point effects, prohibited operating zones with transmission losses, multiple fuels with valve point effects and the large-scale Korean power system with valve-point effects and prohibited operating zones. The results of the proposed approach are compared with those obtained by other evolutionary methods. It is found that the proposed KGMO based approach is able to provide better solution.