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Rechargeable batteries such as redox flow, which are not aged by frequent charging and discharging, have a quick response equivalent to SMES and outstanding function during overload. The battery efficiency increases when the cycle period of charging/discharging becomes shorter. In addition to leveling load, the battery is advantageous for secondary control in the power system and maintenance of power quality of distributed power resources. In this paper, we study the control performance of RF battery systems in its application to LFC. Using dynamic simulation, we show that the LFC capacity of RF battery systems is ten times that of fossil power systems due to quick response characteristics.
Sasaki et al. (Sun,) studied this question.