线性自抗扰控制器在孤岛微网负荷频率控制中的应用

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1、万方数据华北电力火学硕士学位论文AbstractElectricityiSthemainpowerinthemodemindustry．Microgridasoneofthedevelopmentdirectionofelectricpower，thepowerqualityofwhichishigher，therequirementofcontrolqualityisalsobecominghigherandhigher．ThewidespreadapplicationofPIDcontroller

2、isdifficulttoobtainsatisfactorycontroleffectasthefeaturessuchasstrongrandom，turbulent，nonlinearofmicrogridloadfrequencycontrolproblemsbecomingmoreandmoreoutstanding．Therefore，peoplearealwayslookingforbettercontroltechnology,LinearActiveDisturbanceReject

3、ionControlisoneofthecontroltechnologies．ThisdissertationisbasedonthenormalLADRC，itcombinedthealgorithmofparticleswarm，whichisbasedonthenatureselection，andmakeLADRCcontrollereasiertobefulfilledandmorepopular．Basedonthemethodabove，andfocusedonatraditional

4、problemofisolatedmicrogridloadfrequencycontrol，accordingtoitsblockdiagram，thisdissertationdeduceitscertaintransferfunctionmodel，andresearchLADRCfour—levelextendedstateobserver．ComparedwiththesimulationresultofthemethodoftraditionalPIcontroller,itshowsth

5、at，forcertaincondition，LADRCcanmakeagoodtrackingperformanceatalowcontrolpower，andithadadistinctadvantageofresistingthedisturbanceofthenoise．Furthermore，bymodifyingtheparameters，LADRCwillbemorerobust，whichfulfillsthepurportofall—regimecontrolbyusingsingl

6、econtroller．TheLADRCmethodisalsosuitableforusingatothermicrogridcontrolsystemThisarticlepreliminarystudiedmicrogridload仔equencycontrolproblemswhichcontainthelarge-scalewindpower，Introducedthecontrolprincipleofthedoubly-fedinductionwindturbinewhichsuppor

7、tmicrogridfrequencyadjustment，Forthecontrolmodelcontaininglarge—scalewindpower，comparedwithPIcontrol·lerandfuzzyPI，thisstudyanalyzetheperformanceofLADRCcontrollerAnalysisandsimulationresultsconsistentlyshowthattheLADRCeffectivewindpermeabilityincreasein

8、fluenceonmicrogridfrequencycontrol，andhasarobustnessperformancetosomedegree．TheresearchresultofthisarticleshowsthatLADRChaveacertainbrightfutureinthecontrolproblemofmicrogridloadfrequencycontrolproblems．Keywords：loadfrequencycont