REpower 6M Offshore Wind Power.docx

REpower 6M Offshore Wind Power.docx

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REpower6MOffshoreWindPower

TheNextStep:

TheREpower6MOffshoreWindPowerPlant

Isitpossibletoincreasetheyieldsofanoffshorewindpowerplantby15percentwithouthavingtochangeitsdimensions?

Itis.Thesolutiontothischallengeistoconstantlyrefinetheplantsexistenttechnologyformaximumoptimization.Followingthisprinciple,ourengineershaveusedtheproven5Mwindturbineasabasisfordesigningthe6Moffshoremodel–andhavethusdevelopedawindturbinewithanominalpowerof6.15megawattsandarotordiameterof126metersthatranksamongthemostpowerfuloffshorewindpowerplantsintheworld.

RedundantComponentstoPreventWindTurbineDowntimes

Todeliveranoptimalperformance outontheopenseathe6Mwindturbinehasbeendesignedtomatchthechallengesoflargeoffshorewindfarmsanddeepwaters.Manyofitscomponentsfeaturearedundantdesign,thusincreasingitsavailability.Varioussensorsensurethatanyfailureisdetectedandfixedasquicklyaspossible.Incaseofmaintenance,the6M’sspaciousdesignallowsformaximumcomforttoensurequickrepairs.

APowerfulElectricalSystem

TheREpower6Misnotonlygroundbreakingintermsofreliabilityandmaintenance.Anadvancedcoolingsystemforthegeneratorenablestheoffshorewindpowerplanttodeliveracontinuouscapacityof6megawatts.Therefinedelectricalsystemguaranteesalonglifespanandhighestyieldsatminimaloperatingcosts.

TheAdvantagesofOffshoreWindPowerPlants

∙Significantlyhigheryieldduetomoreconstantandhigherwindspeed

∙Noconstructionalrestrictionsregardingheightandrotordiameter

∙Onlyminoroperationalrestrictions（shadowcast,soundemission,etc.）

∙Availabilityofextremelylargeareas

The6MOffshoreWindPowerPlantinOperation:

∙Ellhöft,Schleswig-Holstein,Germany（2009）

∙ThorntonBankII&III,Belgium（2012）

∙EasternNorthSea,Germany（2012）

technicaldata

Ratedpower

6,15MW

RotorDiameter

126m

HubHeights

100-117mOnshore,85-95mOffshore

PowerControl

Pitch（electrical）

RotorSpeed

7,7-12,1rpm（+15%）

On-boardcrane:

∙Hydraulicmarineon-boardcrane

∙Practicallyallrequiredmaintenanceworkcanthusbecarriedout

∙Largeswivelrangeandhighloadcapacity

∙Canbeflexiblyusedviaremotecontrol

Easeofmaintenance:

∙Generousspaceavailableinthenacelleforergonomicallyoptimizedandreliablemaintenance

∙Convenientaccesstothehub,regardlessoftheweather,withouthavingtoleavethenacelle

∙Optimalaccessibilitytoallcomponents

∙Safemaintenanceworkisguaranteedduetothecoveringofallrotatingcomponents

∙Whererequired,comprehensivedismantlingoptionsontheinstallation

Environment:

∙Noleakageoflubricantsfromthehubandnacelledueto:

olabyrinthinthespinner,

ogreaseandoilcollectingpansintegratedinthemainframe

ocoamingedgesinthenacellepanelingand

ogreasepanundertheazimuthgearing

∙ClosedsystemforthecentrallubricationofthebladebearingsProtectionofmanandmachinethroughtheshieldingofallrelevantcables

Fireprotection:

∙Fullyautomaticsystemwithactivedetectors（forsmokeandaerosols）andflue-gasextractioninthenacelle,switchgearcabinetsandtransformerroom

∙Automaticnitrogenmulti-zoneextinguishingsystemfortheelectricalcomponents

∙CO2andABCfireextinguishersformanualfirefightinginthetowerandnacelle

∙

Generator/converter:

∙Yield-optimizedvariablespeedrange

∙Fullyenclosedgeneratorwithwater/airheatexchanger

∙Lowconverterlossesandhighoverallefficiencyduetotherestrictionoftheconverteroutputtomax.20%oftheoveralloutput

∙Redundantconvertersystem（reducedoperationofupto66%oftheratedoutputispossibleifaconverterfails）

Frameconstructionminimizestheoscillationsandvibrations

Transformer:

∙Castresindry-typetransformerwithveryhighenvironmentalcompatibility

∙Reducedmassandlowfirerisk

∙Fullyenclosedinstallationwithair/airheatexchanger

∙Selectableoutputvoltageswith20,30and33kV

Gearsystem:

∙3-stageplanetaryhelicalgearsystem（2xplanetarygears,1xhelicalgear）

∙Designedacc.totheREpowergearsystemguidelinemeetingthemoststringentrequirementsintermsofservicelifeandquietrunning

∙Optimizedefficiency

∙Improvedstructure-bornesoundinsulation

∙Lowtemperaturelevelduetoanefficientoilcoolingsystembymeansofanoil/airheatexchanger

∙Three-stageoilfilteringsystemformaximumoilquality

∙Integratedoilparticlecounter

Rotorblade:

∙Load-optimized,lightGRPconstruction

∙Outstandinglightningprotectionduetomulti-receptorsystem

Tubetower:

∙Optimalintegrationofthecompleteelectricalsystem,consistingofthegenerator,converterandtransformer,intothenacelle