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ID:46298111
大小:2.46 MB
页数:5页
时间:2019-11-22
《大型火电机组协调系统的线性自抗扰控制》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第33卷第02期计算机仿真2016年2月文章编号:1006—9348(2016)02—0180—05大型火电机组协调系统的线性自抗扰控制陈宇1,张锐锋1,徐贵光2,聂海龙2(1.贵州电力试验研究院,贵州贵阳550002;2.北京四方继保自动化股份有限公司,北京100084)摘要:针对大型火电机组协调系统的非线性、变参数和多变量强耦合特性,以及机组参与电网调峰调频常处于变负荷工况运行的特点,为提高协调系统的控制性能,以某660MW大型火电机组协调系统为对象。设计了协调系统的线性自抗扰控制器(LADRC),针对锅炉侧的迟滞对锅炉LA
2、DRC增加了前馈补偿,同时利用扩张状态观测器以消除内外扰动对系统的耦合影响。在超临界机组全范围仿真平台上,分别采用原PID控制器和改进的LADRC进行降负荷扰动仿真。结果表明,改进后的LADRC控制器对负荷和主汽压力的抗扰控制效果优于PID控制器。改进算法简单,整定参数少,并易于工程应用。关键词:大型火电机组协调系统;线性自抗扰控制;扩张状态观测器;前馈中图分类号:TM743文献标识码:BLinearActiveDisturbanceRejectionControlforCoordinatedSystemofLargeTherm
3、alPowerUnitCHENYul,ZHANGRui—fen91,XUGui—guan92,NIEHai—lon92(1.GuizhouElectricPowerTestingandResearchInstitute,GuiyangGuizhou550002,China;2.BeijingSifangAutomationCo.Lid.,Bering100084,China)ABSTRACT:Directingagainstthefeaturesofnonlinear,variable—parameterandstrong—co
4、uplinginthecoordina-tionsystemoflargethermalpowerunitswhichoftenparticipatepeakregulationandfrequencymodulationtomeetpowergriddemand,thispaperanalyzedthecharacteristicsofthecoordinatedcontrolsystemfora600MWsupercriticalpowerunit.Adoublelinearactivedisturbancerejectio
5、ncontrollers(LADRC)wasdesignedbasedonfeedforwardintheboliercontollerasdecouplingcompensationsetperturbation.weusedanextendedstateobservertoestimatethedisturbanceofunmodeleddynamicandunknowninreal—time,andcompensatedtheobserveddisturbancetothesys-terntoeliminatedistur
6、bancerapidlyandtoachievedecouplingofthecoordinationsystem.TheLADRCWaspro-grainedwithMatlabandreal·—timedatacommunicationbetweenMatlabandafull——scopesimulatorofthe600MWsuperciticalunitWasimplementedbasedonUDP/IPprotoc01.kad—downdisturbancetestsforboththeoriginalPIDcon
7、trollerandtheLADRCwithdifferentparameterswerecarriedoutrespectively.Itisshownthattheanti—disturb-alicecontroleffectofLADRCforloadandmainsteampressureissignificantlybatterthanthePIDcontroller.ThisLADRCcontrolschemeCanachievegoodstaticanddynamicdeeouplingwithstrongerro
8、bustnessandanti—interfer-enceability,andthealgorithmissimple,withlessparameterstosetandeasytoapplyinengineering.KEyWoImS:C00minated
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