循环流化床锅炉优化控制实现方法研究

摘要

循环流化床锅炉由于其对于燃料适应性强,燃烧效率高,污染控制特性好,负荷调节范围大等优点,在工业生产以及发电领域有很广泛的应用.但是由于其燃烧过程非线性,时变,大滞后,多变量耦合等特性,使得流化床锅炉很难达到设计要求,工作在十分不经济的工况下.因此,研究流化床锅炉燃烧特性,提高流化床锅炉的自动控制水平对于发挥流化床锅炉的优点具有很大的意义.在分析流化床传统控制方法的基础上,得出只有采用先进智能控制算法才能够适应流化床燃烧对象的特性,而先进智能算法在现场控制系统中很难实现,因此将先进智能算法和外接优化控制站相结合,提高流化床锅炉自动控制水平.通过实际运行效果表明,方案可行并具有一定的推广性.%In this paper,on the basis of the analysis of fluidized bed traditional control method,we derived that only by adopting advanced intelligent control algorithm to be able to adapt to the characteristics of the object of the fluidized bed combustion,but the advanced intelligent algorithms are difficult to achieve in the field control system.We combined an advanced intelligent algorithm with external optimization controllers to improve the level of fluidized bed boiler automatic control.The actual operation results show that the scheme is feasible and can be generalized