基于等价输入干扰方法的再热汽温预测控制  

Predictive Control of Reheated-steam Temperature Using Equivalent Input Disturbance Approach

作　　者：陈刚 华山 倪向红 杜友武 孙立 CHEN Gang;HUA Shan;NI Xianghong;DU Youwu;SUN Li(State Key Laboratory of Low-carbon Smart Coal-fired Power Generation and Ultra-clean Emission,China Energy Science and Technology Research Institute Co.,Ltd.,Nanjing 210046,Jiangsu Province,China;Guoneng Nanjing Electric Power Test and Research Co.,Ltd.,Nanjing 210046,Jiangsu Province,China;The School of Electrical and Information Engineering,Jiangsu University of Technology,Changzhou 213001,Jiangsu Province,China;National Engineering Research Center of Power Generation Control and Safety,School of Energy and Environment,Southeast University,Nanjing 210018,Jiangsu Province,China)

机构地区：[1]国家能源集团科学技术研究院有限公司,低碳智能燃煤发电与超净排放全国重点实验室,江苏南京210046 [2]国能南京电力试验研究有限公司,江苏南京210046 [3]江苏理工学院电气信息工程学院,江苏常州213001 [4]东南大学能源与环境学院,大型发电装备安全运行与智能测控国家工程研究中心,江苏南京210018

出　　处：《动力工程学报》2025年第2期275-281,共7页Journal of Chinese Society of Power Engineering

基　　金：国家重点研发青年科学家项目(2022YFB4100500);江苏省自然科学基金资助项目(BK20221404);常州市自然科学基金资助项目(CJ20220068)。

摘　　要：针对再热汽温控制系统存在大惯性、大时滞和易受扰的问题,提出一种基于等价输入干扰(Equivalent Input Disturbance,EID)估计与补偿的预测控制方法,以提高系统控制的精度。构建状态观测器和EID估计器,估计扰动在控制输入端的一个等价量。由于系统时滞产生相位差,导致无法利用扰动估计值进行实时补偿,根据泰勒级数原理,设计扰动预测器,计算扰动预测值,利用该预测值在输入端对扰动进行反向补偿。基于被控对象模型,提出一种新型状态预测方法,利用预测值设计反馈控制规律。基于分离原理将控制系统分解为扰动抑制和跟踪控制2个子系统,得出系统稳定性条件和参数设计步骤。仿真结果表明:所提方法可获得满意的控制精度和抗干扰性能。Aiming at the issues concerning large inertia,significant time delay,and susceptibility to disturbances of reheated-steam temperature,a predictive control scheme was proposed to improve its control performance based on the equivalent input disturbance(EID)approach.A state observer and an EID estimator were devised to estimate an equivalent signal of a disturbance on the control input channel.Due to the phase lag caused by the time delay,the estimate cannot be used for real-time compensation.A disturbance predictor was designed to produce a prediction of the disturbance based on Taylor series theory.As a result,the prediction instead of the estimate of a disturbance was employed for the compensation on the control input channel.A new predictive scheme was proposed to obtain future information on the system state based on the plant model.A state feedback control law was designed using the future state.The control system was divided into two subsystems including disturbance attenuation and tracking control,thereby obtaining the stability criteria and design procedure.Simulation results show that the proposal can achieve the satisfactory performance of control accuracy and anti-disturbance.

关 键 词：控制理论 再热汽温 预测控制 等价输入干扰 扰动抑制 时滞 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]