Abstract
In recent years, a lot of distributed power generation such as photovoltaic and wind power generation are going to be installed in power systems. However, the fluctuation of these generator outputs affects the system frequency. Therefore, introduction of battery system to the power system has been considered in order to level the fluctuation of the total power output of the distributed generation. In the present paper, the authors propose a systematic method to evaluate the appropriate battery storage capacity and the power converter capacity of the battery for the various type of wind power outputs. The minimum required capacity of the battery is determined reasonably from the viewpoints of battery cost and load frequency control system in a power system with a large penetration of wind power generation.
