Abstract
A power allocation algorithm for energy storage PCS based on SOC sequencing is proposed, aiming at the problem that the energy management system (EMS) can allocate the power of the energy storage unit power converter (PCS) in the existing centralized electrochemical energy storage station steady-state power control, and cannot take into account the equalization of the state of charge (SOC) of the energy storage unit and the power control accuracy of the whole station. Based on the analysis of the characteristics of PCS power allocation algorithms commonly used in engineering, this paper proposes an algorithm to determine the PCS control priority based on the SOC ranking results, and then realize PCS power allocation. The simulation results show that compared with other steady-state PCS power allocation algorithms, the algorithm proposed in this paper can enable the whole station to achieve a better balance of the SOC of the energy storage unit under the premise of satisfying the power control accuracy, so that the energy storage station can provide better steady-state power support for the power grid.
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