Development-of-Wind-Power-Generation

DevelopmentofWindPowerGeneration姓名：专业：学号：日期：1DevelopmentofWindPowerGeneration1.IntroductionWiththegrowingconsumptionofnon-renewableresourcessuchasoilandtheseriousproblemsofenvironmentalpollutioncausedbyfossilfuels,Countriesaroundtheworldcompetetoinvestalargeamountofmanpowerandmoneyinresearchandapplicationofrenewableresources.Windenergyhasastrongcompetitiveedgeinrenewableenergyuse.Windpowernotonlytechnicallymature,businessoperationslevelisalsorising.Asoneofthemostimportantalternativeenergysources,windpowerisbeinglarge-scaledevelopmentandutilization.Windpowergenerationtechnologyalsohasmadesignificantprogressatthesametime.Inrecentyears,China'swindpowerindustryhasalsodevelopedrapidly,becomingoneoftheworld'smajormarketsafterEuropeandtheUnitedStates.Withthescaleofwindpoweraccountedforasubstantialincreaseintheproportionofnetworkcapacity.Duetoasubstantialincreaseinwindpowerinthegridscale,theexistingregularpoweradjustmentandcontrolofpowergridoperationabilityisweakened.Andwindpowerisdifficulttoperformthesameastheconventionalpowerexecutionsystemoffrequencymodulation,regulatingtasks,andinhibitionofpoweroscillationofthesystem.SoProblemsaboutwindfarmsconnectedtothegridtechnologyandtheimpactofthewindfarmgridoperationhavebecomeincreasinglyprominent.Itiswellknownthatrenewableenergysourcesincludehydro,wind,solar,biomass,tidalenergy,geothermalenergyintheformofsix.Withtheincreasingscarcityofconventionalfossilenergy,renewableenergyasasolutiontotheglobalenergycrisisgreenprogram,ithasreceivedwideattentionaroundtheworld.Amongthem,thewindcomesfromsolarradiationtotheEarth'ssurfacetoheatunevenly,leadingtounevendistributionofatmosphericpressureandallowingairmovementinthehorizontaldirectionthekineticenergygained.Itisestimatedthatthedevelopmentandutilizationofwindenergyontheplanetisabout2x107MW,whichis10timesthehydro.Weonlyuse1%ofwindenergytomeettheworld'senergyneeds.AccordingtotheChineseAcademyofMeteorologicalSciencesestimatedthatChina'swindresourcesareveryrich.Theactuallandavailablefordevelopmentofwindenergyresourcesinthetotalreservesof253millionkilowattsandwindpowerhasbecomeanimportantdevelopmentdirectionofenergypolicysupportinChina.Whilewindpowerandnetworkoperationisthemostimportantmodeofoperation.China's2totalinstalledcapacityreached96.37millionkilowattsin2014.By2020,thetotalinstalledcapacitywillreach20millionkilowatts,whichwillaccountfor1%ofthenationalpowergenerationcapacity.Windpoweristherenewableenergytechnologywithmostmaturetechnology,largestcommercialdevelopmentconditionsandprospectsinnewenergytechnologies.Itsrationaluseanddevelopmentofwindenergycaneffectivelyalleviatethecurrentshortageofenergyandenvironmentalpollutionproblemscausedbyfuelresources.Inthelongtermwindenergyislikelytobecomethemostimportantalternativeenergysources.Withthematurityofpowergenerationtechnology,windpowergenerationindustryisincreasingcontinuouslyonaglobalscale,anditmaintainsasustainedgrowthmomentum.2.OperatingprincipleWindgeneratorworksbyconvertingwindenergyintomechanicalworkofpowermachinery,alsoknownasthewindmill.Broadlyspeaking,Windgeneratorisakindofsunasaheatsource,totakeadvantageofairastheworkingmediumofheatengine.Windpoweristheuseofnaturalenergy.Relativetodieselpowergenerationismuchbetter.Butifitisanemergencytouse,whichisnotasgoodasdieselgenerators.Windpowerisasastandbypowersupply,butitcanuseforalongtime.Windgeneratorworksbyusingawinddrivenwindmillbladerotation.Thenthroughthegrowthmachinerotationalspeedboosttoinducegenerators.Accordingtothecurrentwindmilltechnology,whichisaboutthreemeterspersecondwindspeed.Thenitcanbegintogenerateelectricity.Windpowerisformingaboomintheworld,becausewindpowerisnofuelproblemanditdoesnotproduceradiationorairpollution.WindpowerisverypopularinFinland,Denmarkandothercountries.Chinaisalsoastrongproponentofthewesternregion.Smallwindpowersystemefficiencyishigh.Butitisnotcomposedofonlyonegeneratorhead.Itisacertainscientificandtechnologicalcontentofsmallsystems.Itconsistsofwindgenerators,chargersanddigitalinverter.Windturbinesbythehead,swivel,tail,leafcomposition.Eachpartisveryimportantforthefunctionofeachpart.Leavesusedtoacceptwindpowerintoelectricalenergythroughthenose.Thetailisalwaysfacingthebladetothewinddirectionsoastoobtainthelargestwindenergy,Swivelheadallowstheflexibilitytorotatetoachievefunctiontoadjustthedirectionofthetail,Theheadoftherotorisapermanentmagnetandthestatorwindingcuttingmagneticfieldlinestoproduceelectricity.3Smallwindpowersystemefficiencyishigh,butitisnotonlythefirstcomponentconsistsofagenerator.Itisacertainscientificandtechnologicalcontentofsmallsystemsconsistofwindgenerators,chargersanddigitalinverter.Windgeneratorsconsistofthenose,swivel,tail,leaf.Eachpartisveryimportantforthefunctionofeachpart.Leavesusedtoacceptwindpowerintoelectricalenergythroughthenose.Thetailisalwaysfacingthebladetothewinddirectionsoastoobtainthelargestwindenergy.Swivelheadallowstheflexibilitytorotatetoachievefunctiontoadjustthedirectionofthetail.Theheadoftherotorisapermanentmagnetandthestatorwindingcuttingmagneticfieldlinestopro