西门子主汽温度控制策略的仿真研究

火电厂的主汽温度存在大惯性、大延迟等缺陷,而常规串级控制难以取得良好的控制效果.针对以上问题,提出采用西门子公司的主汽温度控制策略控制主汽温.它是一个具有导前温度信号的双回路汽温调节系统,其内回路采用导前温度为反馈信号,通过计算进入过热器的蒸汽具有的焓值来确定喷水减温阀出口温度的设定值.仿真结果表明,此控制策略具有抗干扰能力强、对惯性和延迟适应性好等优点.

Simulation Research on Siemens'Control Strategy for Main Steam Temperature

As an important controlled object in fossil-fired power plant,the main steam temperature features large inertia and time lag.It is difficult to reach good control effect by using conventional cascade control.In accordance with this issue,the control strategy offered by Siemens is proposed.This strategy is based on a dual-loop steam temperature regulating system with lead-temperature signal.The inner loop uses the lead-temperature as the feedback signal,through calculating the enthalpy of the steam entering ...