Deterministically guided differential evolution for constrained power dispatch with prohibited operating zones

Archives of Electrical Engineering

T. Aruldoss Albert Victoire¹  J. Jasper¹ 

关键词: economic load dispatch;    differential evolution;    variable neighborhood search;    prohibited operating zones;    valve point effect;   

DOI  :  10.2478/aee-2013-0047

来源: Versita

【 摘 要 】

This paper presents a new approach to solve economic load dispatch (ELD) problem in thermal units with non-convex cost functions using differential evolution technique (DE). In practical ELD problem, the fuel cost function is highly non linear due to inclusion of real time constraints such as valve point loading, prohibited operating zones and network transmission losses. This makes the traditional methods fail in finding the optimum solution. The DE algorithm is an evolutionary algorithm with less stochastic approach to problem solving than classical evolutionary algorithms.DE have the potential of simple in structure, fast convergence property and quality of solution. This paper presents a combination of DE and variable neighborhood search (VNS) to improve the quality of solution and convergence speed. Differential evolution (DE) is first introduced to find the locality of the solution, and then VNS is applied to tune the solution. To validate the DE-VNS method, it is applied to four test systems with non-smooth cost functions. The effectiveness of the DE-VNS over other techniques is shown in general.

【 授权许可】

Unknown