Guest Editorial Special Section on Optimization Techniques in Renewable Energy System Planning, Design, Operation, and Control

Optimization techniques have been broadly developed in all dimensions during recent decades and accompanied by rapid definition and growth of novel practices and algorithms to tackle brewing problems. While the expansion of various methods has reached out to other areas, the depth of our knowledge about the field of study has also become far-reaching. Currently, diverse types of optimization procedures are being applied to interdisciplinary researches dramatically. Undoubtedly, optimization has turned to an essential tool in a vast area of studies from science and medicine to engineering and economy. Secure, reliable, and economic supply of the demand for electrical energy is a must which has explicitly highlighted the prominence of optimal decision-making challenges about the operation and expansion of power systems. The emergence of modern concepts and requisites such as utilization of renewable energy resources, enhancement of the energy efficiency, and appearance of new types of loads with a nonlinear behavior unlike conventional types have further escalated the complexity of decision making in this area of study. Should it be due to the necessity of modification and elaborate expansion of the power system planning, or illustrating the convenient landscape of the upcoming evolutions. Anyhow, codification and establishment of global researches in the field of power systems with proliferated generation of renewables is of high significance and is strongly tied up to the system operation and control requirements. The integration of these new technologies into the existing network enforces indispensable revision and reconfiguration of those planning, design, operation, and control procedures which were effective formerly. The objective of this special section is to bring together researchers from academia and industry with the goal to disseminate state-of-the-art research and development results on the application of Optimization techniques in renewable energy system planning, design, operation, and control.