Then, a joint scheduling model is proposed for hybrid energy storage system to perform peak shaving and frequency regulation services to coordinate and optimize the output strategies of battery energy storage and flywheel energy storage, and minimize the total operation cost of microgrid.
For the energy storage dispatch center, in order to meet the demands of peak shaving and frequency regulation in the power grid, it is necessary to allocate the grid's requirements to individual energy storage stations.
All dedicated frequency regulation energy storage stations are allocated solely for the purpose of frequency regulation, while all dedicated peak shaving energy storage stations are exclusively utilized for peak shaving.
Auxiliary service effect of frequency regulation. Hybrid energy storage system scheduling result of frequency regulation. MG needs to dispatch HESS frequently according to the Reg-D signal when participating in the power grid frequency regulation service, which poses a challenge to the economic operation of BES and FES.
Therefore, a multi-type energy storage (ES) configuration method considering State of Charge (SOC) partitioning and frequency regulation performance matching is proposed for primary frequency regulation. Firstly, the Automatic Generation Control (AGC) signal is decomposed and reconstructed using the variational mode decomposition (VMD) method.
During peak load periods, energy storage clusters deftly discharge stored energy to alleviate grid strain, concurrently adjusting power output in response to frequency variations to uphold grid stability .
These strategies are designed to optimize the performance and economic efficiency of multi-type distributed energy storage clusters in peak shaving and voltage regulation applications.
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