锅炉燃烧系统改造优化的应用研究

针对目前很多工业锅炉由于燃烧组织的不合理以及操作、管理水平的偏低,存在着效率偏低以及污染严重的问题,同时由于锅炉的非线性、大惯性和滞后性的特点,对于锅炉系统特别是燃烧系统很难建立准确的数学模型,使得传统的基于模型的控制方法难以适用。设计了一套自寻优串级模糊控制系统。该系统引入炉膛辐射能的概念,用此信号前馈来及时反映燃料量的变化。同时,采用了自寻优参数模糊控制器来提高控制品质。利用实际现场数据对该方法进行了仿真验证,该系统具有良好的控制效果,明显提高了锅炉燃烧系统的控制效果。

Application Research of Combustion System for Medium and Small Sized Boilers

A new method to control combustion system of boilers is brought forward. The method uses radiation technology as the signal of fuel quantity. The system is easy to extend and can improve the boiler efficiency. It combines fuzzy control, conventional control and cascade control so as to increase the system reliability. A simulation of this method is performed using practical industrial data and by comparison with the simulation results based on conventional method, it shows that the method provides better control effect.