Frequency Control in AC Isolated Systems with Wind Energy Sources and Storage Systems
As wind penetration increases in power systems around the world, new challenges to the controllability and operation of a power system are encountered. In particular, frequency response is impacted when a considerable amount of power-electronics interfaced generation, such as wind, is connected to the system. So, it will become necessary to require the wind generation to supply a desired amount of active power to participate in frequency regulation or automatic generation control of the grid. However, the intermittency of wind resources can cause high rates of change (ramps) in power generation, which is a critical issue for balancing power systems. Moreover, to optimize the economic performance of power systems with high penetrations of wind power, it would be desired to require wind turbine generation systems (WTGs) to participate in grid functions. To enable WTGs to effectively participate in frequency and active power regulation and other grid functions, energy storage devices will be required to dynamically match the intermittency of wind energy. The aim of this project is to propose a coordinated control strategy of wind turbine generator and energy storage equipment for effective frequency support and grid regulations in AC Isolated Systems.