Energy storage becomes increasingly significant for addressing imbalance of grid supply and demand. In this paper, a new cogeneration system based on combined compressed air energy storage (CAES), solid oxide fuel cell (SOFC), gas turbine (GT) and organic Rankine cycle (ORC) is proposed. SOFC-GT system replaces GT combustor of traditional CAES, and SOFC-GT can operate with high efficiency at peak time. At the same time, ORC is employed to recover the exhaust from GT. Especially, in the new system, the surplus electricity is utilized to compress air, thus eliminating power consumption of air compressor in conventional SOFC-GT. Additionally, the system can also provide heat and power for small-scale distributed generation application users. The combined system is simulated based on Aspen plus and embedded Fortran. The energy, exergy analysis and parametric sensitivity analysis are used to evaluate the system performance. The results revealed that the round-trip efficiency, exergetic round-trip efficiency and discharging electrical efficiency are 76.07%, 61.78% and 72.39%, respectively. Compared with an integrated SOFC-GT-ORC system without energy storage, the electrical efficiency of the new system increases by 17.07%. Overall, the combined system can achieve high efficiencies, which can provide important theoretical guidance for efficient energy utilization.

储能对于解决电网供需不平衡问题变得越来越重要。本文提出了一种基于组合压缩空气储能（CAES）、固体氧化物燃料电池（SOFC）、燃气轮机（GT）和有机朗肯循环（ORC）的新型热电联产系统。SOFC-GT系统取代了传统CAES的GT燃烧器，SOFC-GT可以在高峰时段高效运行。同时，采用ORC回收GT尾气。特别是在新系统中，多余的电力被用来压缩空气，从而消除了传统 SOFC-GT 中空压机的功耗。此外，该系统还可以为小型分布式发电应用用户提供热量和电力。组合系统基于 Aspen plus 和嵌入式 Fortran 进行仿真。能量，火用分析和参数灵敏度分析用于评估系统性能。结果表明，往返效率、有效往返效率和放电电效率分别为76.07%、61.78%和72.39%。与没有储能的集成SOFC-GT-ORC系统相比，新系统的电效率提高了17.07%。总体而言，组合系统可以实现高效率，可以为能源的高效利用提供重要的理论指导。新系统的电效率提高了17.07%。总体而言，组合系统可以实现高效率，可以为能源的高效利用提供重要的理论指导。新系统的电效率提高了17.07%。总体而言，组合系统可以实现高效率，可以为能源的高效利用提供重要的理论指导。