Continuous quick group search optimizer for solving non-convex economic dispatch problems

In this paper a new optimization algorithm is applied for solution of non-convex and large scale economic dispatch (ED) problems. A continuous version of quick group search optimizer (QGSO) algorithm is proposed. A more realistic ED formulation with considering valve-points effect, prohibited operating zones, transmission losses and ramp-rate limits is utilized. The performance of the proposed method is verified by implementation on five test systems. Case studies and numerical examples show that the proposed continuous QGSO algorithm has better solution quality comparing with the most of the latest reported algorithms in the literature.

► New approach to solve power systems economic dispatch. ► Considering valve-point effect, prohibited operation zones, multi-fuel options. ► The quick group search optimizer (QGSO) algorithm is modified for solving continuous optimization problems. ► Proposed CQGSO is applied on different benchmark functions and economic dispatch test systems.