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
张国林(1999),男,硕士研究生,主要研究方向为智能控制,zgl10288316@163.com;
曾喆昭(1963),男,博士,教授,主要研究方向为智能控制与智能计算,本文通信作者,508984293@qq.com;
唐钰淇(2001),男,硕士研究生,主要研究方向为智能控制,564530999@qq.com。
收稿:2024-05-02,
修回:2024-08-25,
纸质出版:2025-04-30
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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.
目的
2
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
2
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
2
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
2
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。
Objectives
2
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
2
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
2
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
2
It is of great significance to improve the control accuracy and robustness of the FR/FW system in supercritical units.
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