The invention relates to an echelon utilization
energy storage system capacity configuration method for reducing wind curtailment, and the method comprises the steps: building an echelon utilization
energy storage system full-life cycle cost
estimation method through combining a secondary utilization process of a decommissioned
power battery; under the condition that a
power battery is used as an
energy storage element in an echelon mode,
wind power consumption income, operation benefits and environmental benefits are comprehensively considered, energy storage power constraint, energy storage capacity constraint,
power balance constraint, wind curtailment power constraint and generator set output constraint are used as constraint conditions, and a capacity configuration model of the echelon utilization
battery energy storage
system is constructed; and according to the actual
wind power data, analyzing and configuring the
wind power acceptance capability of the echelon utilization energy storage system, obtaining an optimal configuration scheme of the echelon utilization energy storage system, and performing
economic evaluation on the optimal configuration scheme. According to the method, the wind curtailment rate can be reduced, and operation benefits are increased. And when the initial SOC of the energy storage system is relatively low, the wind curtailment rate can be reduced.