The advanced adiabatic compressed air energy storage (AA-CAES) is a promising solution to enhancing grid frequency security due to its flexible and high inertia properties. Therefore, based on distributionally robust optimization, this paper proposes a dispatch strategy with the participation of AA-CAES to enhance frequency security.
In this way, the total dispatch cost decreases. Therefore, by adjusting the confidence level and the quantity of sampling data, the power grid operators can balance the dispatch economy and frequency security. Table 5. Sensitivity analysis of parameters of distributionally robust method. Parameter combination Deviation Empty Cell
This observation indicates that the dispatch strategy without frequency security constraints can trigger a potential frequency security problem following wind power disturbance. Table 3. Comparison of the frequency indexes in some periods. Frequency index
In this proposed model, the efficiencies and capacities of dis-/charging power are affected by operating power and the air storage of the air reservoir. According to the working process on compression and expansion sides, the constant-pressure mode, sliding-pressure mode, throttling control, and hybrid strategy are introduced.
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