Dynamic Modelling and Simulation of Combustion Mode Switching Process in Gas Turbine
To meet the requirements of increasingly stringent standards for nitrogen oxides(NOx)emission,the lean-premixed combustion mode is widely applied in heavy-duty gas turbines for power generation.With the application of this technology,the flame temperature can be reduced,so as to decrease the NOx emission.To verify the combustion mode control system in an F-class heavy-duty gas turbine,based on the mechanism model of simplified chemical reaction for natural gas combustion,a network module library for chemical reactor was established,and a simulation research was conducted on the switching process of combustion mode.Based on the modelling technology of Simulink model diagram,a dynamic modelling for the dramatic changing process such as ignition and burn out is realized.Through simulating,it is verified that the established model can accurately reflect the influence of flow distribution ratios of different fuel nozzles on the combustion temperature and emission component,while the real-time simulation with a lower computational expense for combustion mode switching can be realized.
gas turbinelean-premixed combustioncombustion modechemical reactor networkdynamic simulation
万方数据
维普
