上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (10): 1504-1508.

• 自动化技术、计算机技术 • 上一篇    下一篇

电厂过热汽温串级系统的约束预测控制

冯建苗，李少远   

  1. (上海交通大学 系统控制与信息处理教育部重点实验室， 上海 200240)
  • 收稿日期:2010-12-15 出版日期:2011-10-31 发布日期:2011-10-31
  • 基金资助:

    国家自然科学基金资助项目(60825302, 60934007，61074061)

Cascade Constrained Model Predictive Control for Power Plant Superheated Steam Temperature System

 FENG  Jian-Miao, LI  Shao-Yuan   

  1. (Key Laboratory of System Control and Information Processing, Ministry of Education of China, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2010-12-15 Online:2011-10-31 Published:2011-10-31

摘要： 针对实际电厂过热汽温系统中减温水阀门受到物理约束限制，外环控制器计算的设定值造成执行机构饱和从而影响系统性能的问题，提出了串级预测控制算法，并采用约束预测控制算法进行求解，在系统约束范围内求得系统性能的优化解，对电厂过热汽温控制系统进行了仿真论证.仿真结果表明，过热汽温系统控制量能被有效控制在约束范围内，并且系统保持了良好的运行结果.

关键词: 串级控制, 预测控制, 过热汽温系统, 约束

Abstract: Power plant superheated steam temperature system is characterized by large inertia and large lag. Usually spray system is applied to form a cascade control system and cascade PID scheme is usually employed to control superheated steam temperature. The spray valve is subject to physical constraints so that actuator saturation happens because of the set point computed by the outer loop controller. The method of cascade model predictive control was applied. Constrained model predictive control(CMPC) was used to handle constraints and obtain optimal solution with system satisfying the corresponding constraints. In addition, simulation of superheated steam system was realized.

Key words: cascade control, predictive control, superheated steam temperature system, constraint

中图分类号: