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1、第33卷第02期計(jì)算機(jī)仿真2016年2月文章編號(hào)：1006—9348(2016)02—0180—05大型火電機(jī)組協(xié)調(diào)系統(tǒng)的線性自抗擾控制陳宇1，張銳鋒1，徐貴光2，聶海龍2(1．貴州電力試驗(yàn)研究院，貴州貴陽(yáng)550002；2．北京四方繼保自動(dòng)化股份有限公司，北京100084)摘要：針對(duì)大型火電機(jī)組協(xié)調(diào)系統(tǒng)的非線性、變參數(shù)和多變量強(qiáng)耦合特性，以及機(jī)組參與電網(wǎng)調(diào)峰調(diào)頻常處于變負(fù)荷工況運(yùn)行的特點(diǎn)，為提高協(xié)調(diào)系統(tǒng)的控制性能，以某660MW大型火電機(jī)組協(xié)調(diào)系統(tǒng)為對(duì)象。設(shè)計(jì)了協(xié)調(diào)系統(tǒng)的線性自抗擾控制器(LADRC)，針對(duì)鍋爐側(cè)的遲滯對(duì)鍋爐LA
2、DRC增加了前饋補(bǔ)償，同時(shí)利用擴(kuò)張狀態(tài)觀測(cè)器以消除內(nèi)外擾動(dòng)對(duì)系統(tǒng)的耦合影響。在超臨界機(jī)組全范圍仿真平臺(tái)上，分別采用原PID控制器和改進(jìn)的LADRC進(jìn)行降負(fù)荷擾動(dòng)仿真。結(jié)果表明，改進(jìn)后的LADRC控制器對(duì)負(fù)荷和主汽壓力的抗擾控制效果優(yōu)于PID控制器。改進(jìn)算法簡(jiǎn)單，整定參數(shù)少，并易于工程應(yīng)用。關(guān)鍵詞：大型火電機(jī)組協(xié)調(diào)系統(tǒng)；線性自抗擾控制；擴(kuò)張狀態(tài)觀測(cè)器；前饋中圖分類號(hào)：TM743文獻(xiàn)標(biāo)識(shí)碼：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
