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Battery energy storage (BES) is an indispensable resource in stand-alone microgrids. A reliable and cost effective microgrid operation can be achieved when the BES is optimally designed and deployed. The BES lifetime, however, is greatly impacted by its operation where two important operation factors must be considered to prolong its lifetime, namely the depth of discharge and the number of cycles...
Battery energy storage (BES) has a critical role in standalone microgrids to improve reliability and reduce operation costs. Two major factors affecting the economic viability of integrating a BES to a microgrid are its investment cost and lifetime. The BES investment cost greatly depends on its size, while the BES lifetime, which can be defined as the total number of charge/discharge cycles that...
The high investment cost associated with upgrading utility grid to supply remote area's demand for electricity makes the implementation of standalone microgrids inevitable. These microgrids normally consist of a mix of energy sources such as diesel generators, photovoltaic arrays, wind turbines, and fuel cells. In order to improve the microgrid reliability, reduce its operation cost, and address operational...
The integration of energy storage system (ESS) provides various benefits to microgrids such as mitigating renewable generation variability, reducing operation cost, and supporting frequency and voltage control. Two main factors that affect the ESS function in microgrids include the size and the number of the installed ESS units. This paper investigates these two factors and develops a new mathematical...
This paper presents a model for calculating the optimal size of an energy storage system (ESS) in a microgrid considering reliability criterion. A larger ESS requires higher investment costs while reduces the microgrid operating cost. The optimal ESS sizing problem is proposed which minimizes the investment cost of the ESS, as well as expected microgrid operating cost. Utilizing the ESS, generation...
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