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通过分析超临界机组的燃料质量流量扰动、给水质量流量扰动和汽轮机调门开度扰动对主蒸汽压力和分离器出口温度的影响,得出相应的动态特性和各参数之间的关联性,从原理上给出燃料指令、给水指令与煤水比之间的相互关系,确定了机组指令与锅炉指令的静态和动态关系.提出超临界机组汽水一体化的控制理念,采用变设定值、变参数、动态前馈的控制方式优化控制策略,使超临界机组能稳定快速地跟随AGC的要求,同时保证机组变参数运行的稳定性.
By analyzing the influence of fuel mass flow perturbation, disturbance of feedwater mass flow and turbulence of turbomachine valve on main steam pressure and outlet temperature of supercritical unit, the corresponding dynamic characteristics and the correlation between the parameters are obtained. From the principle The relationship between the fuel command and the water-to-coal ratio is given, and the static and dynamic relationship between the unit command and the boiler command is determined.The control idea of the integrated steam and water control of the supercritical unit is proposed, and the variable setting, variable parameter , Dynamic feedforward control optimization control strategy to make supercritical units can follow the AGC requirements quickly and steadily, while ensuring the stability of the variable parameters of the unit.