基于奈奎斯特曲线的振荡对象自抗扰控制参数整定  

Parameter tuning of active disturbance rejection control for oscillating system based on Nyquist curve

作　　者：吕涛[1] 黄焕袍 汪朝晖 朱民[1] 田彬 禚玉群[1] LYU Tao;HUANG Huan-pao;WANG Zhao-hui;ZHU Min;TIAN Bin;ZHUO Yu-qun(Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;Beijing Engineering Research Center of Power Station Automation,Beijing GuoDian ZhiShen Co.,Ltd.,Beijing 100085,China)

机构地区：[1]清华大学能源与动力工程系,北京100084 [2]国能智深控制技术有限公司北京市电站自动化工程技术研究中心,北京100085

出　　处：《控制与决策》2024年第11期3859-3865,共7页Control and Decision

基　　金：华能集团总部科技项目‘基础能源科技研究专项’项目(HNKJ20-H50);国家重大科技专项项目(J2019-III-0020-0064)。

摘　　要：针对电力系统中存在的振荡、波动以及控制器参数难以整定的问题,提出一种基于奈奎斯特曲线的振荡对象自抗扰控制参数整定方法.首先将自抗扰控制器等价为二自由度控制结构,绘制奈奎斯特曲线,即可根据期望左渐近线或交点计算出对象最快响应情况下对应的控制器参数;在此基础上调整相应参数大小以获得预期的响应速度,具有直观性和简洁性,方便工业现场运行人员调参,并可拓展至任意阶对象和控制器;在脱硝系统的仿真实验表明,所提出的参数整定方法与相关文献中二阶振荡模型的PID参数整定方法相比,调节时间、跟踪IAE指标、抗扰IAE指标为PID方案的34.58%、62.60%、2.24%,具有较优越的控制性能和抗干扰性能.In order to solve the problems of oscillation,fluctuation and controller parameter tuning in power systems,this paper presents a parameter tuning method of active disturbance rejection control based on Nyquist curve.Firstly,the active disturbance rejection controller is equivalent to a two degree of freedom control structure,and then Nyquist curve is drawn.The corresponding controller parameters can be calculated according to the expected left asymptote or intersection point,and the corresponding parameters can be adjusted to obtain the expected response speed.This method is intuitive and concise,convenient for industrial field operators to tune parameters,and can be extended to any order of objects and controllers.The simulation experiment on a denitrification system shows that compared with the PID parameter tuning method for second-order oscillation models in relevant literature,the adjusting time,the tracking IAE index and the disturbance rejection IAE index of the proposed method is 34.58%,62.60%and 2.24%of the PID scheme respectively,which has superior control performance and anti-interference performance.

关 键 词：奈奎斯特曲线 振荡对象 自抗扰控制 二自由度控制结构 参数整定 稳定性分析 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]