燃煤电站锅炉二次风控制系统优化  

The Optimizing Control of the Secondary Air Control System of Power Plant

作　　者：丁承刚 郭士义 石伟晶 王景成[2] 

机构地区：[1]上海电气电站环保工程有限公司,上海201612 [2]上海交通大学自动化系系统控制与信息处理教育部重点实验室,上海200240

出　　处：《电气自动化》2016年第4期106-109,共4页Electrical Automation

基　　金：国家自然科学基金(61174059;61233004;61433002);国家973项目(2013CB035406);2015年度上海市高端智能装备首台突破和示范应用专项

摘　　要：针对二次风控制系统中的风煤比优化问题进行研究。首先,以锅炉热平衡原理为基础,分析了过量空气系数、飞灰含碳量及排烟温度对锅炉效率的影响,建立了热经济性参数在烟气含氧量影响下的计算模型和以锅炉效率为目标的最佳烟气含氧量数学模型。其次,对于二次风控制系统,提出了用Smith模糊PID控制器替换传统的PID控制器的控制方法。最后,通过实验仿真比较两种控制器在被控对象模型匹配和不匹配情况下的控制性能。The paper addresses the wind coal ratio optimization problem for secondary air control system. Firstly, on the basis of the basic theory of boiler thermal balance, this paper explains the effects of excess air coefficient, unburned carbon content in fly ash and boiler＇s exhaust gas temperature on boiler efficiency, and establishes the mathematical model of boiler＇s thermal economy parameters affected by the flue gas oxygen content and partial differential equation of the optimal oxygen content in flue gas aiming to improve boiler efficiency. Then, for the second air control system, a control approach is proposed by Smith fuzzy PID instead of the traditional PID. Further, control performances are compared between two different controllers under the model is matching and ~matching via simulation experiments.

关 键 词：二次风控制系统 最佳烟气含氧量 飞灰含碳量 SMITH预估器 模糊PID控制 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]