296
Asian Journal of Engineering, Sciences and Technology - Volume 9, Issue 1 2019
By Muhammad Sufyan, Munir Azam Muhammad
Keywords: Microgrid energy system; renewable energy sources; depth of discharge; battery lifetime; firefly algorithm
In today's world, increasing power consumption need an efficient and dependable energy source. A microgrid combines distributed energy resources such as diesel generators, wind energy, and solar energy to supply electricity to society in a sustainable way. To provide a dependable and cost-effective service on energy supply and demand, battery storage is incorporated inside the microgrid, and this article presents a method combining economic scheduling and an optimum battery size model to decrease the operational cost of the isolated microgrid. As the battery's lifespan decreases, so does the battery's functioning. Thus, battery depth of discharge status must be addressed for microgrid economic scheduling. The depth of discharge has an effect on the lifespan and operating costs of energy storage. The economic dispatch and battery sizing are stated as a mixed integer nonlinear problem that the firefly method solves. When compared to other current techniques, the suggested solution resulted in a 50% reduction in operational costs. The findings indicate that running the microgrid with optimum battery size is more cost effective than operating without battery storage.