Overall, energy storage is vital for maintaining grid stability and supporting the integration of intermittent renewable energy sources into the grid. Energy storage systems, particularly battery energy storage systems (BESS), play a crucial role in frequency regulation within. . To address these challenges, energy storage systems can be controlled to emulate the inertial response of synchronous generators by providing virtual inertia, thereby enhancing the frequency stability of power systems [4]. Frequency regulation is the process of maintaining the grid's frequency within a narrow range, typically around 50 Hz (or 60 Hz in some countries), by. .
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Current research on energy storage control strategies primarily focuses on whether energy storage systems participate in frequency regulation independently or in coordination with wind farms and photovoltaic power plants .
Can large-scale battery energy storage systems participate in system frequency regulation?
In the end, a control framework for large-scale battery energy storage systems jointly with thermal power units to participate in system frequency regulation is constructed, and the proposed frequency regulation strategy is studied and analyzed in the EPRI-36 node model.
The results of the study show that the proposed battery frequency regulation control strategies can quickly respond to system frequency changes at the beginning of grid system frequency fluctuations, which improves the stability of the new power system frequency including battery energy storage.
Numerous studies have investigated control strategies that enable distributed energy resources (DERs), such as wind turbines, photovoltaic systems, and energy storage, to contribute to primary frequency regulation.