The construction of energy storage power stations in wind power gathering areas can ensure the primary frequency modulation capability of the whole area and improve the economy at the same time. A storage capacity allocation method based on operational strategy is proposed for building storage power stations in wind power gathering areas. Energy storage stations use an independent operation mechanism to participate in power market transactions on the premise of ensuring the primary frequency modulation capacity of the region, so as to maximize the utilization rate and efficiency of energy storage. A two-tier model for collaborative optimization of operation configuration of energy storage power stations is proposed. The outer layer configures energy storage with the maximum return on investment in the whole life cycle as the target. The inner layer optimizes operation strategy with the maximum expected profit in daily operation as the target considering energy storage cycle life. The outer and inner layers are optimized to achieve comprehensive optimization, so as to get the result of energy storage configuration. An improved sparrow search algorithm is presented to improve the convergence rate and analyze the two-level configuration model. An example shows that the proposed method can improve the economy of energy storage while ensuring the primary frequency modulation capability of the region.