Research on Control Strategy of Hybrid Energy
In this paper, we investigate the control strategy of a hybrid energy storage system (HESS) that participates in the primary frequency
To leverage the efficacy of different types of energy storage in improving the frequency of the power grid in the frequency regulation of the power system, we scrutinized the capacity allocation of hybrid energy storage power stations when participating in the frequency regulation of the power grid.
Principles of Hybrid Energy Storage Participation in Grid Frequency Regulation In grid frequency regulation, a standard target frequency is typically set to 50 Hz. The grid frequency is then modulated by adjusting the rotational speed of generators to manage the power output .
Hybrid energy storage system (HESS) As RES become more integrated into the power system, large-capacity, fast-response ESS are needed to maintain grid stability . However, the above four types of single ESSs have their own limitations, which leads to the emergence of HESS .
The hybrid energy storage capacity allocation method proposed in this article is suitable for regional grids affected by continuous disturbances causing grid frequency variations. For step disturbances, the decomposition modal number in this method is relatively small, and its applicability is limited.
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