YAN Gangui,WANG Mingqi,DUAN Shuangming,et al.Primary Frequency Regulation Control Strategy of Energy Storage Considering State of Charge Recovery[J].Automation of Electric Power Systems,2022,46(21):52-61.
YAN Gangui,WANG Mingqi,DUAN Shuangming,et al.Primary Frequency Regulation Control Strategy of Energy Storage Considering State of Charge Recovery[J].Automation of Electric Power Systems,2022,46(21):52-61. DOI: 10.7500/AEPS20210705003.
Primary Frequency Regulation Control Strategy of Energy Storage Considering State of Charge Recovery
Aiming at the problem of insufficient charging and discharging frequency regulation capability of battery energy storage system (BESS) when state of charge (SOC) is low or high
this paper proposes a primary frequency regulation control strategy of BESS considering SOC recovery. In the frequency regulation stage
based on the S-type function
the construction method of auxiliary frequency regulation control and the calculation method of frequency regulation coefficient of BESS are put forward
and the power system frequency is controlled by the frequency regulation coefficient of BESS
so as to realize the recovery of SOC and the improvement of charging and discharging frequency regulation capability of BESS when SOC is low or high. In the SOC recovery stage
by comprehensively considering the demand of SOC recovery and the limitation of power grid operation state
the appropriate output control strategy for SOC recovery is adopted. Simulation analysis verifies that the proposed strategy can recover SOC to a better state faster
solve the problem of insufficient charging and discharging frequency regulation capability of BESS when SOC is low or high to a certain extent
and effectively improve the frequency regulation effect and the SOC recovery effect.
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