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以泰州电厂1000 MW超超临界机组为对象,对超超临界机组的动态特性进行了研究,通过机理分析和模型简化,采用集中参数的方法,建立了从省煤器、蒸发受热面、过热器到汽轮机的综合模型.建模过程中,将相变点的位置作为独立变量置入模型,成功解决了超超临界工况下机组动态仿真所面临的问题.并进行了二次建模,便于计算机的仿真实现.在仿真模型上进行了阶跃扰动试验,试验结果与实际机组的动态特性基本一致.该模型的建立为超超临界机组系统工程分析和仿真机的开发打下了良好的基础.
Taking the 1000 MW ultra-supercritical pressure unit of Taizhou Power Plant as an example, the dynamic characteristics of the ultra-supercritical pressure unit are studied. Through the mechanism analysis and model simplification, To the comprehensive model of the steam turbine.In the modeling process, the position of the phase transition point is put into the model as an independent variable, which successfully solves the problems faced by the unit dynamic simulation under the ultra-supercritical conditions and carries out the second modeling Computer simulation is carried out.A step disturbance test is carried out on the simulation model, and the experimental results are basically the same as the actual ones.The establishment of this model lays a good foundation for the engineering analysis and simulation of ultra-supercritical power plant.