本文基于对IGCC系统的全面分析研究，归纳总结了导致燃气轮机工况变化的主要原因；应用双开口变量(整体空分系数(Xas)和氮气回注系数(Xgn))和折合系统效率的概念，建立了IGCC中燃气轮机全工况特性简化模型；并通过大量定量计算，得出不同Xas和Xgn组合条件下，IGCC中燃气轮机全工况网络特性，为确定系统变工况最佳调节规律提供全面信息
In this paper, the key factors, which affects theoff-design characteristic of gas turbine (GT) in IGCC, are analyzed;the off-design characteristic model of GT with two openingvariables -- ASU-integrated coefficient (Xas) andNitrogen-reinjected coefficient (Xgn) -- and IGCC overall efficiency, isinvestigated; the performances both resulting from the part-load workingcondition and the varied atmosphere temperature are calculated andcompared under various possible combination of Xas and Xgn;a lot of computation is carried out and some helpful results are obtained
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