中文摘要：

为给微网中基于微型燃气轮机的冷热电联产设备选型提供参考，从多方面分析了两种不同结构的微型燃气轮机特点，并根据微型燃气轮机不同运行模式切换、不同负荷类型以及不同拓扑结构下的动态特性进行了研究．结果表明：微网运行模式切换过程中，单轴MT允许负荷变化的范围要比分轴MT大；单轴结构MT适用于负荷类型较多情况，而分轴结构的MT则受负荷类型影响相对大些；串联微网结构下MT对应的负荷允许变化范围比并联结构的小．

英文摘要：

In order to provide a selecting reference for combined cooling heating and power （CCHP） based on microturbine in microgrid, the characteristics of two microturbines with different structures were analyzed from several points of view and the dynamic characteristic were investigated according to different operation modes,load types and topology structures of microturbine. The results show that single shaft microturbine （MT） can endure more load variety than split shaft MT in the process of micro grid operation mode switching;single shaft MT fits more load types,while split shaft MT would be affected by load type more easily ;load change of MT in series is smaller than that in parallel connection.