Research on Auto-Coupling PID Control Method of Firing Rate to Feed Water Ratio System of Supercritical Unit

ZHANG Guolin; ZENG Zhezhao; TANG Yuqi

doi:10.12096/j.2096-4528.pgt.23147

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Research on Auto-Coupling PID Control Method of Firing Rate to Feed Water Ratio System of Supercritical Unit

Power Generation and Environmental Protection | 更新时间：2026-06-29

- Research on Auto-Coupling PID Control Method of Firing Rate to Feed Water Ratio System of Supercritical Unit
- Power Generation Technology Vol. 46, Issue 2, Pages: 344-352(2025)
- 作者机构：
  
  1.长沙理工大学电气与信息工程学院，湖南省长沙市 410114
  2.湖南喆昭自动化控制技术有限公司，湖南省长沙市 410000
- 作者简介：
- 基金信息：
  
  Key Project of Hunan Provincial Department of Education(21A0183);Changsha University of Science and Technology Graduate Research Innovation Project(CSLGCX23060)
- DOI：10.12096/j.2096-4528.pgt.23147
  CLC： TK 221
- Received：02 May 2024，
  
  Revised：2024-08-25，
  
  Published：30 April 2025
- 稿件说明：
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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(02):344-352.

ZHANG Guolin,ZENG Zhezhao,TANG Yuqi.Research on Auto-Coupling PID Control Method of Firing Rate to Feed Water Ratio System of Supercritical Unit[J].Power Generation Technology,2025,46(02):344-352.
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(02):344-352. DOI： 10.12096/j.2096-4528.pgt.23147.

ZHANG Guolin,ZENG Zhezhao,TANG Yuqi.Research on Auto-Coupling PID Control Method of Firing Rate to Feed Water Ratio System of Supercritical Unit[J].Power Generation Technology,2025,46(02):344-352. DOI： 10.12096/j.2096-4528.pgt.23147.

摘要

目的

针对超临界机组燃水比(firing rate to feed water ratio，FR/FW)控制过程中存在强耦合性、负荷量大和抗扰动能力弱等问题，根据自耦PID控制理论提出了自耦PI(auto-coupling PI，ACPI)新型控制方法。

方法

将多变量FR/FW系统等效为多个单变量闭合回路系统，并将FR/FW系统的耦合性、已知或未知内部动态、外界扰动等一切复杂因素定义为总扰动，进而将FR/FW控制系统等价映射为线性扰动系统，构建了在总扰动激励下的受控误差系统。在此基础上，对每个单变量系统设计了基于速度因子的自耦PI控制器，并在复频域理论分析了控制系统的鲁棒稳定性和抗扰动鲁棒性。

结果

与PI、自抗扰控制方法相比，ACPI控制方法具有响应速度快、无超调的动态品质与抗扰动能力强的稳态性能。

结论

研究成果对提升超临界机组FR/FW系统的控制精度与鲁棒性具有重要意义。

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

Keywords

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