Evaluation of Batteries for Wind-Hybrid Systems in South Korean Islands

다국어 초록 (Multilingual Abstract)

We have proposed a method for selecting optimal energy storage systems (ESSs) for off-grid wind-hybrid power systems in SouthKorean islands, in terms of economic factors and performance. These islands are classified according to their sizes. The technicalspecifications of various batteries such as flow batteries, lead-acid batteries, and Li-ion batteries in the optimized wind-hybrid systemsof target islands were analyzed. The flow battery was found to be the best ESS for most of the test islands under the currentcircumstances. We have also evaluated several scenarios with varied prices and technical specifications of the batteries to determinethe factors that affect the selection of the optimum ESS. As a result, we found that the nominal energy of the batteries is the mostimportant factor that assures economic competitiveness of the system.

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