Abstract: For the energy storage process of compressed air energy storage systems, based on multi-disciplinary real-time simulation modeling and solution, β function method was utilized to model the external characteristics of the compressor, and the model was incorporated into the real-time simulation module. Based on this, the variation patterns of typical parameters of the unit during the inflation process were analyzed. Meanwhile, detailed analyses were conducted on the influence of intake temperature on the energy storage performance of the unit. Results show that the relative deviation of the steady-state calculated pressure ratio of the established compressed air energy storage compressor model is less than 1%, fulfilling the requirements for dynamic simulation. After being coupled with the control model, the variation patterns of key parameters during dynamic working processes such as the start-up and load variation of the compressor unit can be obtained. When the fourth compressor is integrated, the pressure disturbance to the first three compressors gradually decreases, with the disturbance to the first compressor being the greatest. When the intake temperature rises, due to temperature protection, the energy storage process of the compressor unit fails to meet the design specifications, and the charging flow rate is only 60% of that under design condition. Early integration of the fourth compressor is a feasible approach to enhance its overall gas storage performance, after early integration, the final pressure of the gas storage is 3.46% lower than that under design condition.