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1、Gridfaultanddesign-basisforwindturbines-FinalreportRisø-R-ReportAncaD.Hansen,NicolaosA.Cutululis,HelenMarkou,PoulSørensen,FlorinIovRisø-R-1714(EN)January2010Risø-R-1714(EN)Author:AncaD.Hansen,NicolaosA.Cutululis,HelenMarkou,PoulSørensen,FlorinIovJanuary2010Title:
2、Gridfaultanddesign-basisforwindturbines-FinalreportDivision:WindEnergyDivisionAbstract(max.2000char.):ISSN0106-2840ThisisthefinalreportofaDanishresearchproject“GridfaultISBN978-87-550-3789-2anddesign-basisforwindturbines”.Theobjectiveofthisprojecthasbeentoassessa
3、ndanalyzetheconsequencesofthenewgridconnectionrequirementsforthefatigueandultimatestructuralloadsofwindturbines.Thefulfillmentofthegridconnectionrequirementsposeschallengesforthedesignofboththeelectricalsystemandthemechanicalstructureofwindturbines.Thedevelopment
4、ofwindContractno.:Energinet.dkturbinemodelsandnovelcontrolstrategiestofulfilltheTSO’s200616319requirementsareofvitalimportanceinthisdesign.Dynamicmodelsanddifferentfaultride-throughcontrolstrategieshavebeenGroup'sownreg.no.:developedandassessedinthisprojectforthr
5、eedifferentwind1115058-01turbineconcepts(activestallwindturbine,variablespeeddoubly-fedinductiongeneratorwindturbine,variablespeedmultipoleSponsorship:permanentmagnetwindturbine).Acomputerapproachforthequantificationofthewindturbinesstructuralloadscausedbythefaul
6、tride-throughgridrequirement,Cover:hasbeenproposedandexemplifiedforthecaseofanactivestallwindturbine.Thisapproachreliesonthecombinationofknowledgefromcomplimentarysimulationtools,whichhaveexpertiseindifferentspecializeddesignareasforwindturbines.Inordertoquantify
7、theimpactofthegridfaultsandgridrequirementsfulfillmentonwindturbinesstructuralloadsandthusontheirlifetime,arainflowandastatisticalanalysisforfatigueandultimatestructuralloads,respectively,havebeenperformedandcomparedfortwocases,i.e.onewhentheturbineisimmediatelyd
8、isconnectedfromthegridwhenagridfaultoccursandonewhentheturbineisequippedwithafaultride-throughcontrollerandthereforeitisabletoremainconnectedtothegridduringthe
