基于模糊控制的600MW超临界机组协调控制系统设计

发布时间：2018-02-26 20:34

本文关键词： 超临界机组协调控制系统机理建模模型降阶格拉姆解耦模糊控制　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：超临界机组锅炉和汽轮机之间运行特性的显著差异性要求建立锅炉与汽轮机之间的协调控制机制,其控制品质直接影响超临界机组的安全、稳定、经济运行。所以超临界机组协调控制系统是超临界机组热工控制的重点和难点。以某600MW超临界机组协调控制系统为研究对象,分别对其特点、基本方案、分类和运行方式进行了详细的分析,并对其模型进行机理分析,运用集总参数法与模块化建模结合起来的方法建立该机组的线性模型；并对所建模型进行Pade算法降阶,采用格拉姆矩阵解耦的方法,对其进行解耦。运用模糊控制的原理,分别设计了基于模糊控制的微分补偿环节和基于模糊控制的锅炉主控制器、汽机主控制器。仿真实验表明,该策略能够使其迅速趋于稳定值,具有较好的负荷响应能力和抗干扰能力。
[Abstract]:The remarkable difference of operation characteristics between supercritical unit boiler and steam turbine requires the establishment of coordinated control mechanism between boiler and steam turbine, and its control quality directly affects the safety and stability of supercritical unit. Therefore, the coordination control system of supercritical unit is the key point and difficulty of supercritical unit thermal control. Taking the coordination control system of a 600MW supercritical unit as the research object, the characteristics, basic scheme, classification and operation mode of the system are analyzed in detail, and the mechanism of the model is analyzed. The linear model of the unit is established by the combination of lumped parameter method and modular modeling, and the Pade algorithm is used to reduce the order of the model, and the Gramm matrix decoupling method is used to decouple it. The differential compensation link based on fuzzy control and boiler main controller and turbine main controller based on fuzzy control are designed respectively. It has better load response ability and anti-interference ability.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM621.6

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