Feasibility study of energy storage technologies for remote microgrid's energy management systems

摘要

Energy storage improves system reliability and efficiency in remote microgrid by optimizing the power demand and generation to reduce operational costs. A lead acid battery is widely used as an energy storage device in remote microgrid due to its low cost; however, the response rate, short life cycle and depth of discharge (DoD) lead to high operational costs. Although, the ultracapacitor has considerably longer life cycle, its energy density is low and the initial cost is very high. Lithium-ion and hybrid ion batteries may have comparatively better economical prospective in terms of DoD, life cycle, and operational cost. In this paper, different energy storage technologies are considered for remote microgrid energy management systems. Results showed that the wear cost is an important factor to consider while designing the energy management system.