耦合过热汽温调节的直流炉燃煤机组抗干扰机炉协调控制系统  

Anti-disturbance Coordinated Control System of Once-through Boiler Coal Fired Units Coupled With Superheated Steam Temperature Regulation

作　　者：范赫 苏志刚[2] 彭献永 周怀春 FAN He;SU Zhigang;PENG Xianyong;ZHOU Huaichun(School of Low-Carbon Energy and Power Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu Province,China;School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu Province,China)

机构地区：[1]中国矿业大学低碳能源与动力工程学院,江苏省徐州市221116 [2]东南大学能源与环境学院,江苏省南京市210096

出　　处：《中国电机工程学报》2025年第3期1010-1021,I0017,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：中央高校基本科研业务费专项资金资助项目(202300333);国家自然科学基金项目(51676034)。

摘　　要：为帮助电网消纳间歇性可再生能源发电量,直流炉燃煤机组需要大范围变负荷运行,同时维持过热汽温稳定,然而机组变负荷运行中的多种扰动和系统非线性会降低机组负荷跟踪速率和过热汽温控制品质。因此,该文结合含过热汽温的机炉协调系统动态模型,构建非线性控制方法,并利用高阶滑模观测器估计系统中的多种扰动,提出一种耦合过热汽温调节的机炉协调系统抗干扰控制方法。结果表明:与传统比例积分控制、二自由度比例积分及线性自抗扰控制方法相比,所设计控制系统最大绝对误差降低超过90%。该文方法能使机组快速跟踪负荷指令,有效抵制多种扰动,同时维持过热汽温稳定,保证机组安全经济运行。To help power grid absorb intermittent renewable energy generation,once-through boiler coal fired units are required to be operated in a wide load range,and meanwhile superheated steam temperature should be maintained stable.However,various disturbances and system nonlinearity can reduce load tracking rate and control performance of superheated steam temperature during varying load operation.Therefore,this study proposes an anti-disturbance control method of boiler-turbine coordinated system coupled with superheated steam temperature regulation.In this method,a dynamic model of the system is adopted to construct nonlinear control algorithm,and the high order sliding mode observer is used to estimate various disturbances in system.Simulation results reveal that compared with traditional proportional integral,two-degree-of-freedom proportional integral and linear active disturbance rejection control methods,the max absolute errors of system outputs decrease by more than 90%.Therefore,the designed method enables once-through boiler coal fired units to track load command rapidly and reject various disturbances effectively,while simultaneously maintaining superheated steam temperature stable so as to ensure safe and economic operation of the units.

关 键 词：直流炉燃煤机组 机炉协调系统 过热汽温 抗干扰控制 

分 类 号：TK39[动力工程及工程热物理—热能工程]