()windturbinewindpowerstationwindfarmwindturbinegeneratorsystemWTGShorizontalaxiswindturbineverticalaxiswindturbinehub(forwindturbine)nacellesupportstructureforwindturbineshutdownforwindturbinenormalshutdownforwindturbineemergencyshutdownforwindturbineidlingblockingparkingstandstillbrakeparkingbrakerotorspeedcontrolsystemprotectionsystemyawingdesignsituationdesignsituationloadcaseexternalconditionsdesignlimitslimitstateserviceabilitylimitstatesultimatelimitstateultimatelimitstatesafelifecatastrophicfailurelatentfaultdormantfailurewindcharacteristicwindspeedwindvelocityrotationallysampledwindvelocityratedwindspeedcut-inspeedcut-outspeedannualaverageannualaveragewindspeedmeanwindspeedextremewindspeedsurvivalwindspeedreferencewindspeedwindspeeddistributionRayLeighdistributionWeibulldistributionwindshearwindprofilewindshearlawwindshearexponentlogarithmicwindshearlawpowerlawforwindsheardownwindupwindgustroughnesslengthturbulenceintensityturbulencescaleparameterinertialsub-rangewindsitemeasurementparametersmeasurementseatmaximumwindspeedwindpowerdensitywindenergydensitydiurnalvariationannualvariationhubheightwindenergystandardatmosphericstateinfluencebythewindsheargustinfluencefrequencyofwindspeedenvironmentoperationalenvironmentclimateoceanclimatecontinentalclimateopen-airclimateindoorclimateextremedailymeanextrememaximumannualmaximumannualextremedailymeanoftemperaturemeanmonthlytemperatureairhumidityabsolutehumidityrelativehumidityprecipitationrainfreezingrainrimeglazehaildewfogsaltfogthunderstormsnowloadstandardairpressuremeansealevelaltituderadiantfluxsolarradiationdirectsolarradiationskyradiationsolarconstantsolarspectrumblackbodywhitebodygreenhouseeffectambienttemperaturesurfacetemperatureinterconnectionoutputpowerratedpowermaximumpowernetworkconnectionpointpowercollectionsystemsiteelectricalfacilitiespowerperformancenetelectricpoweroutputpowerperformancefreestreamwindspeedsweptareahubheightmeasurementpowercurveextrapolatedpowercurveannualenergyproductionavailabilitydatasetforpowerperformancemeasurementaccuracyuncertaintyinmeasurementmethodofbinsmeasurementperiodmeasurementsectordiurnalvariationspitchangledistanceconstanttestsiteflowdistortionobstaclescomplexterrainwindbreaksoundpressurelevelweightedsoundpressurelevel;soundlevelapparentsoundpowerleveldirectivitytonalityacousticreferencewindspeedstandardizedwindspeedreferenceheightreferenceroughnesslengthreferencedistancegrazinganglewindrotorrotordiameterrotorsweptareatiltangleofrotorshaftyawingangleofrotorshaftratedturningspeedofrotormaximumturningspeedofrotorrotorwakewatransmissionratiogeargearpairgearpairwithparallelaxestrainofgearsplanetarygeartrainpinionwheel,geardriving,geardrivengearplanetgearplanetcarriersungearringgearexternalgearinternalinternalgearpairspeedincreasinggearspeedincreasinggeartraincenterdistancespeedincreasingratiotoothflankworkingflanknon-workingflankmodulenumberofteethmeshinginterferenceprofilemodification,profilecorrectionengagement,meshaddendummodificationongearsgearswithaddendummodificationcylindricalgearspurgearhelicalgearsingle-helicalgearpitchpointpitchcircletipcirclerootcirclediameterandradiusfacewidthtooththicknesspressureanglecircumferentialbacklashwormwormwheelcouplingrigidcouplinguniversalcouplingsecuritycouplingtoothtoothspacehelicalgeardouble-helicalgearpitchnormalpitchaxialpitchtoothdepthinputshaftoutputshaftpinrollerplanetarygeardrivemechanismcentergearsingleplanetarygeartrainflexiblegearrigiditygearflexiblerollingbearingoutputcouplingrigiditytorsionalrigidityflexuralrigiditycoefficientoftorsionalstartingtorquetransmissionerrortransmissionaccuracynaturalfrequencyelasticcouplingrigidcouplingOldhamcouplingintegratedcouplingdynamiccouplingsplinedcouplingcastellatedcouplingradialpincouplingperiodicvibrationrandomvibrationpeakvaluecriticaldampingdampingcoefficientdampingratiovibrationisolatorvibrationfrequencyamplitudedisplacementamplitudevelocityamplitudeaccelerationamplitudetelemonitoringprotocolrealtimesimplextransmissionhalf-duplextransmissionduplextransmissionfrontendprocessorremoteterminalunitmodulator-demodulatordataterminalequipmentinterfacedatacircuitinformationstateinformationtappositioninformationmonitoredinformationequipmentfailureinformationalarmreturninformationsetpointvalueintegratedtotalintegratedvalueinstantaneousmeasuredcountedmeasuredmeteredmeasuredmeteredreadingacknowledgementsignalanalogsignalcommandbytebitaddressbaudencodedecodecodecentralizedcontrolprogrammablecontrolminicomputerprogramanaloguecontroldigitalcontrolstrongcurrentcontrolweakcurrentcontrolunitcontrollocalcontrolinterlockeranalogueboardswitchboardcontroldeskemergencystoppush-buttonlimitswitchlimitspeedswitchon-loadindicatorscreendisplaydisplaylampstartingsignalpointofcommoncouplingflickerdatabasehardwarehardwareplatformlayerlevelclassmodelresponsetimesoftwaresoftwareplatformsystemsoftwaretrip-freebasicerrorone-to-onecontrolmodeprimarycurrentprimaryvoltagesecondarycurrentsecondaryvoltagelowvoltageapparatusratedoperationalvoltageratedoperat