Abstract

AbstractToday, energy storage systems (ESSs) have become attractive elements in power systems due to their unique technical properties. The ESSs can have a significant impact on the growth of the presence of renewable energy sources. Growing the penetration of ESSs, in addition to creating different capabilities in the power system, will also lead to challenges. Therefore, the development of the ESSs and their operation requires accurate studies. The focus of this chapter is on modeling the ESSs in the power system studies. For this purpose, different storage technologies are studied at the first section. In this section, by investigating the characteristics of the different ESS technologies, the characteristics of each of them that should be considered in modeling are assessed. Studies show that similar modeling for all ESS technologies will affect the accuracy of the results. After that, the modeling methodologies of the ESSs will be presented. For this purpose, the proposed models are presented for ESS expansion planning and operation planning. In the expansion planning studies, the capacities and location of the ESSs are usually determined. The storage capacities include the power and energy capacities of the ESSs. In the operation planning studies, the status and amount of charge and discharge of the ESSs are determined at any time. The needful formulations for modeling the behavior of ESSs in each of the expansion and operation planning studies will be studied in this section. For this purpose, in addition to reviewing the proposed methods in the previous studies, the necessary suggestions will be provided.KeywordsEnergy storage systems (ESS)Expansion planningOperation planning

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