OPERATING RESERVE POWER SUPPLY SYSTEM IN ELECTRIC POWER SYSTEM, AND CONTROL METHOD THEREOF

摘要

PURPOSE: An operation reserve supply system of an electric power system and a control method thereof are provided to extend a replacement period of an energy storage device by reducing the frequencies of charge/discharge operations of the energy storage device. CONSTITUTION: A plurality of DC/DC converters(20) is connected to an energy storage device(10) in serial/parallel. An energy storage device is one of a battery, a super capacitor, and a super conductive storage device. A DC/AC inverter(30) transfers the output inputted from the DC/DC converter to the electric power system. A controller(40) generates a first frequency operation reserve power in the malfunction of the system. The controller includes a voltage controller, a frequency reserve controller, a phase controller, and a switching controller.