Porous media compressed air energy storage (PM-CAES) systems that use porous geological formations such as sandstone may provide large storage capacities in future energy systems based primarily on fluctuating renewable energy sources. In CAES systems, the instantaneous power and stored energy are closely linked to the storage pressure and the mass flow rate achievable in the geological reservoir. Therefore, a coupled simulator that accurately represents the power plant, the geostorage site, and their interactions during all potential PM-CAES system operation modes is presented in this paper. Using adiabatic and diabatic power plant topology test designs, strong feedback between the achievable storage rates and capacities of the chosen power plant design and geostorage site are found, thus confirming the benefit of this integrated modelling approach. Using a generic, highly cyclic load profile for daily peak shaving with charging and discharging rates of 100 MW and an adiabatic power plant topology, it is found that all discharging targets can be met but the achievable charging rates decrease to approximately 95 MW due to increased pressure in the geostorage after approximately 10 cycles. When a diabatic power plant design is considered, a long-term decrease in the geostorage pressure is found. Correspondingly, the charging power always meets the specifications, while the discharging power decreases slowly from the 20th storage cycle onwards to 79 MW in the 31st cycle. The newly developed simulation tool thus allows one to predict achievable power rates and geostorage pressures for PM-CAES systems, enabling the identification of efficient PM-CAES designs.

使用砂岩等多孔地质构造的多孔介质压缩空气储能 (PM-CAES) 系统可以在主要基于波动的可再生能源的未来能源系统中提供大的存储容量。在 CAES 系统中，瞬时功率和储存的能量与地质储层中可达到的储存压力和质量流量密切相关。因此，本文提出了一个耦合模拟器，它可以准确地表示发电厂、地质储层以及它们在所有潜在 PM-CAES 系统运行模式下的相互作用。使用绝热和非绝热发电厂拓扑测试设计，发现所选发电厂设计和地质存储地点的可实现存储率和容量之间的强烈反馈，从而证实了这种集成建模方法的好处。使用通用的高循环负载曲线进行日常调峰，充电和放电率为 100 MW 和绝热发电厂拓扑，发现可以满足所有放电目标，但由于增加了可实现的充电率降低到大约 95 MW大约 10 个循环后地质储层中的压力。当考虑非绝热发电厂设计时，会发现地质储存压力长期下降。相应地，充电功率始终符合规格，而放电功率从第 20 个存储周期开始缓慢下降到第 31 个周期的 79 MW。因此，新开发的模拟工具可以预测 PM-CAES 系统可实现的功率和地质储存压力，