发电技术2025，Vol.46Issue(2)：344-352,9.DOI:10.12096/j.2096-4528.pgt.23147
超临界机组燃水比系统的自耦PID控制方法
Research on Auto-Coupling PID Control Method of Firing Rate to Feed Water Ratio System of Supercritical Unit
摘要
Abstract
[Objectives]Aiming at the problems of strong coupling,large load,and weak disturbance resistance in the firing rate to feed water ratio(FR/FW)control process of supercritical units,a new type of auto-coupling PI(ACPI)control method is proposed based on the theory of auto-coupling PID control.[Methods]The multivariable FR/FW system is equivalent to multiple single-variable closed-loop systems,and all complex factors such as the coupling,known or unknown internal dynamics,and external disturbances of the FR/FW system are defined as total disturbances.Then,the FR/FW control system is equivalently mapped to a linear disturbance system,and a controlled error system under total disturbance excitation is constructed.Based on this,a speed factor based ACPI controller is designed for each single variable system,and the robust stability and disturbance resistance of the control system are analyzed in the complex frequency domain theory.[Results]Compared with PI and active disturbance rejection control methods,the ACPI control method has fast response speed,dynamic quality without overshoot,and strong steady-state performance with strong disturbance resistance.[Conclusions]It is of great significance to improve the control accuracy and robustness of the FR/FW system in supercritical units.关键词
火力发电/超临界机组/燃水比(FR/FW)/自耦PI(ACPI)/速度因子/抗扰动鲁棒性Key words
thermal power generation/supercritical unit/firing rate to feed water ratio(FR/FW)/auto-coupling PI(ACPI)/velocity factor/robustness against disturbance分类
能源科技引用本文复制引用
张国林,曾喆昭,唐钰淇..超临界机组燃水比系统的自耦PID控制方法[J].发电技术,2025,46(2):344-352,9.基金项目
湖南省教育厅重点项目(21A0183) （21A0183）
长沙理工大学研究生科研创新项目(CSLGCX23060).Project Supported by Key Project of Hunan Provincial Department of Education(21A0183) （CSLGCX23060）
Changsha University of Science and Technology Graduate Research Innovation Project(CSLGCX23060). （CSLGCX23060）
