基于复杂热力系统动态特性的机组两级再热汽温多变量解耦控制方法  

Multivariable Decoupling Control Method for Steam Temperature of Two-Stage Reheat Units Based on Dynamic Characteristics of Complex Thermal System

作　　者：王海 张继东 赵俊杰 赵博石 胡勇 WANG Hai;ZHANG Jidong;ZHAO Junjie;ZHAO Boshi;HU Yong(China Energy Group Zhejiang Power Generation Co.,Ltd.,Hangzhou 310020,China;Guoneng Zhejiang Beilun No.1Power Generation Co.,Ltd.,Ningbo 315800,China;Guodian Inner Mongolia Dongsheng Thermal Power Co.,Ltd.,Ordos 017000,China;Guodian Power Development Co.,Ltd.,Beijing 100101,China;School of Energy and Power Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国家能源集团浙江电力有限公司,浙江杭州310020 [2]国能浙江北仑第一发电有限公司,浙江宁波315800 [3]国电内蒙古东胜热电有限公司,内蒙古鄂尔多斯017000 [4]国电电力发展股份有限公司,北京100101 [5]华北电力大学能源与动力工程学院,北京102206

出　　处：《锅炉技术》2022年第5期9-14,共6页Boiler Technology

基　　金：国家自然科学基金(51806063)。

摘　　要：复杂热力系统具有大惯性以及多变量强耦合等动态特性,构建其动态过程的数学模型难度较高,使传统的控制方法无法奏效。为提升机组2级再热汽温多变量解耦控制的效率与抗干扰性,提出一种基于复杂热力系统动态特性的机组2级再热汽温多变量解耦控制方法。通过分析复杂热力系统的机组2级再热汽温流程,得到2级再热汽温调节过程;根据复杂热力系统动态特性,引入自抗扰控制技术,分析多变量自抗扰解耦控制原理,设计自抗扰控制器,解决机组2级再热汽温多变量解耦问题,提升解耦控制方法的鲁棒性。实验结果表明:所提出方法能够有效解耦控制机组2级再热汽温,具备较高的控制效率与抗干扰性。The complex thermal system has the dynamic characteristics of large inertia and multivariable strong coupling,so it is difficult to construct the mathematical model of its dynamic process,which makes the traditional control methods ineffective.In order to improve the efficiency and anti-interference performance of multivariable decoupling control of twostage reheat steam temperature,a multivariable decoupling control method of two-stage reheat steam temperature is proposed based on the dynamic characteristics of complex thermal system.By analyzing the two-stage reheat steam temperature flow of complex thermal system,the two-stage reheat steam temperature regulation process is obtained.According to the dynamic characteristics of the complex thermal system,the active disturbance rejection control(ADRC)technology is introduced to analyze the principle of multivariable ADRC decoupling control,and the ADRC controller is designed to solve the multivariable decoupling problem of the steam temperature of the two-stage reheat unit,and improve the robustness of the decoupling control method.Experimental results show that the proposed method can effectively decouple and control the two-stage reheat steam temperature of the unit,and has high control efficiency and anti-interference performance.

关 键 词：复杂热力系统 动态特性 机组 2级再热汽温 多变量 解耦控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]