分轴燃气轮机大扰动动态过程计算
COMPUTATION OF DYNAMIC PROCESS WITH LARGE DISTURBANCE FOR SPLIT-SHAFT GAS TURBINE
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摘要: 由我国自行设计和生产的燃气-蒸汽联合循环装置已经在东炼试运成功。其燃气轮机是用斯贝核心机改型的分轴燃气轮机。发电机组采用了双转速调节系统来代替功频调节系统,以消除气体燃料热值变化引起的工况变化。为确保甩负荷时大扰动动态过程计算的准确度,采用了以非稳态工况为起始点的数学模型,用变系数分段小偏差线性化的方法计算大扰动的动态过程,从而解决了非线性系统动态过程的计算问题。Abstract: Taking Spey core engine used in a gas-stream combined cycle as an example, this paper deals with computation of dynamic process with large disturbance for split-shaft gas turbine with a variable-coefficient divisional small-disturbance for linearization method.
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