中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2011年
23期
94-100
,共7页
汽包锅炉单元机组%协调控制系统%线性自抗扰控%制%动态解耦%扩张状态观测器
汽包鍋爐單元機組%協調控製繫統%線性自抗擾控%製%動態解耦%擴張狀態觀測器
기포과로단원궤조%협조공제계통%선성자항우공%제%동태해우%확장상태관측기
drum boiler-turbine units%coordinated control%linear active disturbance rejection control%dynamic decoupling%expanded state observer
在线性自抗扰控制技术基础上,引入解耦补偿器,提出汽包锅炉单元机组协调系统的新控制方案。该方案首先对单元机组设计解耦补偿器,进行一定程度解耦;再将其他通道耦合作为扰动,分别设计炉侧和机侧线性自抗扰控制器,进一步消除耦合的影响。由于线性自抗扰控制技术采用扩张状态观测器,可以对扩张状态(系统未建模动态摄动和未知扰动1进行在线实时估计,因此其设计的扰动补偿可以不依赖于模型达到快速消去扰动的效果。将该方法应用于一500MW汽包锅炉单元机组协调系统进行仿真研究,结果表明该方案可以实现良好的动静态解耦,有较强的鲁棒性和抗干扰能力,并且算法简单、调试容易。
在線性自抗擾控製技術基礎上,引入解耦補償器,提齣汽包鍋爐單元機組協調繫統的新控製方案。該方案首先對單元機組設計解耦補償器,進行一定程度解耦;再將其他通道耦閤作為擾動,分彆設計爐側和機側線性自抗擾控製器,進一步消除耦閤的影響。由于線性自抗擾控製技術採用擴張狀態觀測器,可以對擴張狀態(繫統未建模動態攝動和未知擾動1進行在線實時估計,因此其設計的擾動補償可以不依賴于模型達到快速消去擾動的效果。將該方法應用于一500MW汽包鍋爐單元機組協調繫統進行倣真研究,結果錶明該方案可以實現良好的動靜態解耦,有較彊的魯棒性和抗榦擾能力,併且算法簡單、調試容易。
재선성자항우공제기술기출상,인입해우보상기,제출기포과로단원궤조협조계통적신공제방안。해방안수선대단원궤조설계해우보상기,진행일정정도해우;재장기타통도우합작위우동,분별설계로측화궤측선성자항우공제기,진일보소제우합적영향。유우선성자항우공제기술채용확장상태관측기,가이대확장상태(계통미건모동태섭동화미지우동1진행재선실시고계,인차기설계적우동보상가이불의뢰우모형체도쾌속소거우동적효과。장해방법응용우일500MW기포과로단원궤조협조계통진행방진연구,결과표명해방안가이실현량호적동정태해우,유교강적로봉성화항간우능력,병차산법간단、조시용역。
A novel scheme for the coordinated control of drum boiler-turbine units was presented based on the principle of linear active disturbance rejection control(LADRC) and decoupling compensator. A decoupling compensator was designed based on a simplified linear boiler-turbine model which captured the essential dynamics and interaction of a unit, then LADRCs for boiler and turbine were designed separately to further reduce the coupling by taking it as disturbance. Since LADRC estimated real-time disturbance via extended state observer (ESO), it can eliminate disturbance quickly via a disturbance compensation independent of the accurate mathematical model of the plant. The method was applied to a 500 MW drum boiler-turbine unit and the results show that it can provide good decoupling, strong robust ability and disturbance rejection; moreover, it is easy to tune and implement.