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Applicationmethodofgeneralizedpredictivecontrolforhydraulic
turbineregulatingsystem underfrequencycontrolmode
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CHENJinbao ,LIUShaohua,CHENShang,ZOUYidong ,ZHENGYang ,XIAOZhihuai
(1.SchoolofPowerandMechanicalEngineering,WuhanUniversity,Wuhan 430072,China
2.KeyLaboratoryofHydraulicMachineryTransients,MinistryofEducation,WuhanUniversity,Wuhan 430072,China
3.NanjingNanruiJibaoElectricCo.,Ltd,Nanjing 210000,China
4.ChinaYangtzePowerCo.,Ltd.ThreeGorgesPowerPlant,Yichang 443000,China)
Abstract:ThePIDcontrolstrategyforhydropowerunitsunderfrequencycontrolmodehasthedisadvantageofpoor
robustness.Toaddressthisissue,thispaperproposesanadaptivegeneralizedpredictive(AGPC)basedondouble
models ,real - timefeedbacklinearization,nonlinearcharacteristiccompensator,andgeneralizedpredictivecon
trollertoachievereal - timeoptimalcontrolofhydropowerstationsunderalloperatingconditions.Firstly ,ahigh -
precisionnonlinearhydro - turbinemodelisconstructedbasedontheBPneuralnetworkandtheimprovedsalp
swarmalgorithm ,andanonlinearhydraulicturbineregulationsystem simulationplatform isbuiltbycombining
modulessuchasthePIDcontroller ,diversionsystem,servosystem,andgenerator.Then,throughquantitative
calculations ,theirrationalityofdirectlyapplyinggeneralizedpredictivecontrollertothenonlinearhydraulicturbine
regulationsystemisrevealed.Furthermore ,combiningreal - timefeedbacklinearizationwithanonlinearcharacter
isticcompensatordesignedbasedonpredictivecontrolsignals ,theapplicationstrategyofgeneralizedpredictive
controllerunderfrequencycontrolmodeisproposedforhydropowerstations.Finally,anonlinearhydraulicturbine
regulationsystemsimulationplatformbasedonAGPCisbuilt,andtheapplicability,reliability,andexcellentro
bustnessoftheproposedcontrolstrategyareverifiedbytherealdataofahydropowerstation.
Keywords:generalizedpredictivecontrol;hydropowerunits;feedbacklinearization;doublemodels;nonlinear
characteristiccompensator
(责任编辑:王 婧)
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