标题: [下载]一种考虑控制系统耦合关系的汽包锅炉 [打印本页] 作者: 科技先锋 时间: 2008-12-7 20:12 标题: [下载]一种考虑控制系统耦合关系的汽包锅炉 <p>ABSTRACT: Considering the coupling relationship of the<br/>control systems, and using the basic physical theory, a<br/>simplified model for drum boiler was set up and analyzed. In<br/>the modeling process, a new state parameter named by<br/>pressure-variation enthalpy was proposed. Then the effecting<br/>factors of the state parameter were studied. Due to using the<br/>parameter, the simplified model can reflect the influence of the<br/>feed water and spray water. After that, a new type feedforward<br/>signal in water level control system and main steam<br/>temperature control system was constructed, which can<br/>effectively weaken the influence of other coupling control<br/>systems and further improve the control effects. This paper<br/>provided a new idea and method to study the complex power<br/>plant units.<br/>KEY WORDS: boiler model; coupling characteristics;<br/>pressure-deviation enthalpy ; feedforward signal<br/>摘要：考虑了控制系统间的耦合关系，根据基本物理定律，建立了一种汽包锅炉简化模型，并对模型进行了分析。在建模过程中，提出了系统压力变动焓的概念，对影响系统压力变动焓的因素进行了分析。利用该参数把锅炉给水和减温水的影响引入汽包锅炉简化模型，体现了控制系统间的耦合影响。同时，提出了一种新的水位控制系统和主汽温控制系统前馈信号，可更好地削弱耦合回路的影响，进一步改善控制效果。文中为研究复杂的电站机组系统提供了一种新思路和新方法。<br/></p><p>关键词：锅炉模型；耦合特性；压力变动焓；前馈信号</p><p><br/></p>作者: 北漂 时间: 2015-3-4 14:06
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