Abstract
Compared with frequency regulation by wind generation system, a battery energy storage system (BESS) is a better alternative for providing frequency regulation and inertial response in a faster, more accurate and flexible manner. So, participation of BESS in an islanded microgrid frequency regulation can assist renewable distributed generators (DGs) in operating at their maximum efficiency without excessive power curtailment. Furthermore, a BESS can mitigate the frequency variation with a faster response when the frequency disturbance occurs in an islanded microgrid. If the energy capacity of the BESS is limited, a wind turbine generator can gradually take over the mid-to-long term frequency regulation tasks through emulated droop response and Automatic Generation Control (AGC) control.
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