Artificial bee colony algorithm for solving economic dispatch problems with non-convex cost functions
Description
Abstract: The main aim of this paper is to propose an efficient and reliable
algorithm to solve the economic dispatch (ED) problem with non-convex cost
functions in power systems, using artificial bee colony (ABC) algorithm. For
techno-economic reasons along with the high computation time, the ED
problem has undergone a significant amount of research over the last years, in
an effort to find the more suitable optimisation algorithm which ensures a
balance between the optimal economic contribution of each generating unit
outputs and the required computation time. The proposed algorithm is applied
to different non-convex ED problems, including prohibited operating zone
(POZ) with ramp rate limits, valve point effects with consideration of the
transmission network losses and the gaseous emission of the generating units.
Four different test systems consisting 6, 10, 15, and 20 generating units are
used to validate the consistency of the proposed algorithm to detect the optimal
solution for a given objective. The simulation results clearly indicate that the
ABC algorithm provides better results in term of quality solution and
convergence speed compared to those available in the literature.
Keywords: artificial bee colony; ABC; economic dispatch; ED; prohibited
operating zone; POZ; ramp rate limit; valve point effects; emission.