在SOFC/MGT混合分布式能源系统中,选择不同的系统参数将对SOFC乃至SOFC/MGT混合系统的输出特性、安全运行等造成很大的影响。本文建立了一个典型的SOFC/MGT混合系统计算模型,研究了透平入口温度及燃气轮机压比对混合系统性能的影响。结果表明,透平入口温度和压比增大时,系统的输出功率和效率都会下降,而透平入口温度和压比较小时,SOFC及混合系统因温度过高而产生损坏的可能性增加。因而,在进行SOFC/MGT混合系统进行设计时,应综合考虑,透平入口温度和压比应选择在较合适的范围内。“,”In a SOFC/MGT hybrid distributed energy system,the performance and safety are greatly influenced by the parameters of MGT.In this paper,a typical numerical model of SOFC/MGT system has been built up.The effects of turbine inlet temperature（TIT） and pressure ratio（PR） to the performance of the hybrid system have been investigated.The results show that the output power and efficiency of the system will come down with the TIT or PR increasing;on the contrary, the possibility that the SOFC and hybrid system may be destroyed will grow with lower value of TIT or PR.Consequently,while a SOFC/MGT hybrid system is designed,it is very important to select appropriate value of TIT and PR.