目前，燃气轮机基本都是以天然气或重油作为燃料进行设计的，而在IGCC电站中供给燃气轮机的燃料为煤气化产生的低热值合成气，其主要成分是H2和CO。由于燃料特性的变化，一方面需要对燃气轮机进行适当的硬件改造，另一方面需要重新设定燃气轮机的运行工况点，以满足燃用低热值合成气的要求。文章初步分析了燃气轮机燃用低热值合成气时，燃气轮机主要系统性能的变化特点，并介绍了相应的应对措施，以满足燃气轮机稳定运行的要求。

The fuel for gas turbine is normally natural gas or heavy oil, which used in the IGCC(integration generation combined cycle) is syngas with main compositions of H2 and CO. The variations of composition and heating value of fuel will lead to the requirement of some modifications for gas turbine, and the reset of operating condition points. In the paper, the characteristics of gas turbine for firing syngas are firstly analyzed, and then some measures to improve the performance of gas turbine introduced.