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CN101382512A 用于确定进入燃烧器的燃料成分的方法和系统 有权

用于确定进入燃烧器的燃料成分的方法和系统
摘要：
用于确定进入燃烧器(28)的燃料(16)成分的方法和系统。该方法包括：确定进入燃烧器(28)的燃料(24)温度；利用燃料性质和燃料喷嘴(26)有效面积(Ae)计算第一估计的总燃料流量；并利用气动热循环模型(14)分析来计算第二估计的总燃料流量。将第一估计的总燃料流量与第二估计的总燃料流量比较，由第一估计的总燃料流量和第二估计的总燃料流量之间的差值确定燃料的低发热值。用于控制燃气轮机(10)的方法和系统，包括：计算燃料(16)成分对燃气轮机(10)的性能的影响，并将一个或多个性能参数与一个或多个参数界限(40)比较。根据比较的结果改变燃气轮机(10)的一个或多个机械控制器(42)。
摘要（英）：

Disclosed is a method and system for determining composition of a fuel (16) entering a combustor (28). The method includes determining a temperature of the fuel (24) entering the combustor (28), calculating a first estimated total fuel flow utilizing fuel properties and the effective area (Ae) of a fuel nozzle (26), and calculating a second estimated total fuel flow utilizing an aero-thermal cycle model (14) analysis. The first estimated total fuel flow is compared to the second estimated total fuel flow and a lower heating value of the fuel is determined from a difference between the first estimated total fuel flow and the second estimated total fuel flow. A method and system for controlling a gas turbine (10) includes calculating effects of the fuel (16) composition on performance of the gas turbine (10) and comparing one or more performance parameters to one or more parameter limits (40). One or more machine controls (42) of the gas turbine (10) are changed based on the results of the comparison.

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