循环流化床机组的自抗扰控制研究  

Research on active disturbance rejection control for circulating fluidized bed unit

作　　者：吴振龙 张玉琼 李东海[1] 王灵梅[3] WU　Zhenlong;ZHANG　Yuqiong;LI　Dongha;WANG　Lingmei(State　Key　Lab　of　Power　Systems,Dept　of　Energy　and　Power,Tsinghua　University,Beijing　100084,China;China　Electric　Power　Research　Institute,Beijing　100192,China;The　Engineering　College,Shanxi University,Taiyuan　030013,China)

机构地区：[1]清华大学能动系电力系统国家重点实验室,北京100084 [2]中国电力科学研究院,北京100192 [3]山西大学工程学院,山西太原030013

出　　处：《西安理工大学学报》2018年第1期74-80,共7页Journal of Xi'an University of Technology

基　　金：国家重点研发计划资助项目(2016YFB0901405);山西省煤基重点科技攻关资助项目(MD2014-07)

摘　　要：本文建立了循环流化床机组协调控制系统的非线性模型,根据现场运行数据辨识出模型中的动态参数。为更好的理解机组中各参数的动态关系,对该非线性模型的动态特性进行了理论分析,并通过仿真实验进行了验证。为提高机组的控制品质,协调控制系统采用直接能量平衡的控制结构,并且锅炉控制回路采用基于动态比例增益的前馈信号和改进的自抗扰控制器来提高回路的响应速度和抗干扰能力。仿真表明,采用自抗扰控制器的回路具有更快的跟踪性能和更强的抗干扰能力,Monte-Carlo随机试验也验证了自抗扰控制器具有更好的鲁棒性。A nonlinear model of the Coordinated Control System(CCS)for circulating fluidized bed unit is established in this paper,with the dynamic parameters in the model identified based on the operation data.To better understand the dynamic relationship among the parameters in the model,the dynamic characteristics of the nonlinear model are analyzed theoretically,with the dynamic characteristics validated by the simulation.To improve the control quality of the unit,the Direct Energy Balance(DEB)control structure is proposed for CCS.To enhance the response speed and the anti-disturbance performance,the feedforward signal based on the dynamic proportional gain and an improved Active Disturbance Rejection Controller(ADRC)are applied in the boiler control loop.Simulation results demonstrate that the tracking performances and anti-disturbance performances are simultaneously improved in both loops with the proposed control strategy,and that the robustness performances are also improved in randomized Monte-Carlo test.

关 键 词：协调控制系统 动态特性 直接能量平衡 自抗扰控制器 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]