信号流图在线性系统的求解中得到了广泛的应用 .将信号流图理论引入电站热力系统的计算、分析中 ,构造出热力系统火用流图并进行热力系统火用经济性分析 ,在热力系统计算中尚属首次 .该方法简洁、直观 ,结论正确 .这种利用系统工程的观点进行电站热力系统分析的方法 ,为热力系统的研究开拓了思路 The signal flow diagram has been widely used in solving linear systems.The signal flow diagram theory is introduced into the calculation and analysis of the thermal power system of the power station, and the thermal flow diagram of the thermal system is constructed and the economic economic analysis of the thermal system is performed. It is the first time in system calculation that the method is concise and intuitionistic and the conclusion is correct.This method of analyzing the thermal system of power plant from the viewpoint of system engineering opens up a new idea for the research of thermal system