Adaptive Frequency Coincidence Coordination with Distributed Renewable Energy Sources

With the growing development of renewable energy sources (RES), it is more challenge for the frequency adjustment of power system due to the randomness and volatility. This paper investigates a control scheme based on the adaptive dynamic programming (ADP) for the frequency control of an islanded microgrid considering RES. A frequency controller is designed to adjust the output power of micro-turbine when photovoltaic (PV) power generation and wind power generation are both connected into the microgrid. Moreover, the changes of load demand are also taken into consideration. Finally, simulations are provided to verify the performance of our method compared with other methods.