ABSTRACT
This chapter presents a coordinated frequency regulation scheme between the conventional automatic generation control (AGC) participating units and a small-sized energy capacitor systems (ECS) to improve the frequency regulation performance. As the use of energy capacitor systems and other energy storage devices increases worldwide, there is a rising interest in their application in power system operation and control, especially in power system frequency regulation. A coordinated frequency regulation has been proposed for the small-sized and high-power energy capacitor system and the conventional AGC units. The performance index is evaluated under various situations on the capacity of the ECS and also on the maximum charging/discharging power to or from the ECS. The improvement of the frequency regulation performance is further increasing for the larger ECS capacity and the larger power output of the ECS. The control performance is highly improved through the proposed frequency regulation scheme.
