计算机应用 ›› 2015, Vol. 35 ›› Issue (12): 3597-3601.DOI: 10.11772/j.issn.1001-9081.2015.12.3597

• 行业与领域应用 • 上一篇    下一篇

基于Smith控制与预测函数控制的再热汽温多变量控制快速计算方法

王富强1,2, 李晓理2, 张秋生1, 张金营1   

  1. 1. 神华国华(北京)电力研究院有限公司技术研究中心, 北京 100025;
    2. 北京科技大学自动化学院, 北京 100083
  • 收稿日期:2015-05-05 修回日期:2015-08-07 出版日期:2015-12-10 发布日期:2015-12-10
  • 通讯作者: 李晓理(1971-),男,辽宁沈阳人,教授,博士,主要研究方向:系统辨识、自适应控制
  • 作者简介:王富强(1983-),男,河北衡水人,工程师,博士,主要研究方向:智能控制、预测控制;张秋生(1972-),男,河北石家庄人,教授级高级工程师,硕士,主要研究方向:火电厂热控自动控制;张金营(1984-),男,山东德州人,工程师,博士,主要研究方向:智能优化算法。
  • 基金资助:
    国家自然科学基金资助项目(61473034);高等学校博士学科点专项科研基金资助项目(博导类)(20130006110008)。

Fast calculation method of multivariable control for reheat steam temperature based on Smith control and predictive functional control

WANG Fuqiang1,2, LI Xiaoli2, ZHANG Qiusheng1, ZHANG Jinying1   

  1. 1. Technology Research Center, Shenhua Guohua;Beijing, Electric Power Research Institute Corporation Company Limited, Beijing 100025, China;
    2. School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2015-05-05 Revised:2015-08-07 Online:2015-12-10 Published:2015-12-10

摘要: 针对再热汽温控制系统控制变量多、控制难度大等问题,提出了一种基于Smith控制与预测函数控制(PFC)的多变量控制快速计算方法。首先,将再热汽温多变量控制系统分解为三个单变量控制系统,在每个单变量控制系统中,将其中两个控制量作为干扰项;其次,根据Smith控制思想,设计每个单变量控制系统;最后在改进预测函数控制的性能指标的基础上,综合考虑三个单变量控制系统,实现对再热汽温度的控制。再热汽温控制仿真实验表明所提方法的计算速度是传统约束条件下预测控制的50倍左右,并且调整参数少,物理意义明确。实验结果表明该算法在现场使用中能够有效地提高再热汽温控制品质。

关键词: 多变量预测函数控制, Smith控制方法, 再热汽温控制, 烟气挡板, 燃烧器摆角, 喷水减温, 模型失配

Abstract: The reheat steam temperature control system has the problems of multivariable control, difficult control, and so on. In order to solve the problems, a fast calculation method of multivariable control for reheat steam temperature was proposed,which was based on Smith control method and Predictive Functional Control (PFC) method. First of all, the reheat steam temperature multivariable control system was decomposed into three single-variable control systems. In every single-variable control system, the other two control volumes were taken as the interference terms. Secondly, according to Smith control idea, every single-variable control system was designed. Finally, on the basis of improving the performance index of the predictive functional control, three single-variable control systems were considered synthetically to realize the reheat steam temperature control. The simulation results of reheat steam temperature control show that with less parameters and explicit physical meaning, the proposed method is about 50 times as fast as the traditional predictive control with constraint conditions. The experimental results show that the proposed algorithm can effectively improve the quality of the reheat steam temperature control in the field.

Key words: multivariable predictive functional control, Smith control method, reheat steam temperature control, flue gas damper, burner angular, spray water cooling, model mismatch component

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