英语PPT：风电-ppt

-1NewEnergyResourcesandelectricitygeneration-2TraditionalenergyandelectricitygenerationAlthoughtherearemanydifferentsourcesofenergyavailable,morethanthree-quartersoftheenergyusedindevelopedcountriescomesfromoil,gasandcoal.Currentlythethermalpowerplantsofourcountry,whichtakeupmorethan70%oftheinstalledcapacityofChina’selectricalpowersystem,usecoalasfuel.-3ExistingenergyExistingpowersourcesofenergyarethreekinds,namely,______power,_____powerand_______power.Witheconomicdevelopment,socialprogress,peopleputforwardhigherrequirementsofenergy,Findnewenergysourcesbecomeanurgentissuefacinghumanity.thermalhydronuclear-4TheshortcomingsofthermalpowerThermalpowerplantsarethosemakinguseoffuelslikecoal,petroleumandnaturalgas.Ontheonehandthelimitedreservesoffossilfuels,themoreburning,thelessleft,whichisfacingthedangerofdepletion.Itisestimatedthatworldwideoildepletionputanother___years.Ontheotherhandburningfuelwillemit____________and____________,therebycausingthe___________effectand____rain,deteriorationofglobalenvironment.30carbondioxidesulfuroxidesgreenhouseacid-5Theshortcomingsofhytro-powerWatertodrownlargeareasofland,mayleadto__________destructionandifthelarge_________oncecollapse,theconsequenceswouldbedisastrous.Inaddition,acountry'swaterresourcesarelimited,butalsobytheimpactoftheseason.ecologicalreservoirs-6Whatdoyouknowaboutnewenergy?WindpowerSolarpowerTidalpower-7WindenergyWindpoweristheconversionofwindenergyintoausefulformofenergy,suchasusingwindturbinestomakeelectricity,windmillsformechanicalpower,windpumpsforpumpingwaterordrainage,orsailstopropelships.-8发动机箱Enginebox包含：变速箱Transmission发电机Generator电子控制装置Electroniccontrol偏航控制器Yawcontroller制动装置BrakeDevice-9-10高空风能发电High-altitudewindpower-11发动机箱Enginebox变速箱Transmission发电机Generator电子控制装置Electroniccontrol偏航控制器Yawcontroller制动装置BrakeDevice-12Phraseaboutwindpower风轮windrotor垂直轴风力机verticalaxiswindturbine水平轴风力机horizontalaxiswindturbine风轮额定转速ratedturningspeedofrotor风轮最高转速maximumturningspeedofrotor风轮扫掠面积rotorsweptarea风场电器设备siteelectricalfacilities-13风力机windturbine风电场windpowerstation风力发电机组windturbinegeneratorsystem风力机verticalaxiswindturbine风特性windcharacteristic平均风速meanwindspeed下风向downwind上风向upwind安全风速survivalwindspeed极端风速extremewindspeed-14Tower支撑转子和发动机箱，并将整个装置上升到更高位置，使叶片不会碰到地面Rotorblade捕获风能并将其转换为转轴的转动能-15Windturbinecomposeofthehead,swivel,rearwingandtheblade风力发电机由机头、转体、尾翼、叶片组成。-16叶片用来接受风力并通过机头转为电能；Bladestoacceptthewindintoelectricitythroughthenose尾翼使叶片始终对着来风的方向从而获得最大的风能；Tailtowardmakethebladetothewinddirection,itisalwaystogetthebiggestwindenergy转体能使机头灵活地转动以实现尾翼调整方向的功能；Swivelheadallowstheflexibilitytoadjustthedirectionofrotationinordertoachievethefunctionoftail-17机头的转子是永磁体，定子绕组切割磁力线产生电能。Headoftherotorispermanentmagnet,thestatorwindingscuttingmagneticlinestoproduceelectricity.-18机舱Engineroom转子叶片Rotorblade轴心Axis低速轴Thelowspeedshaft齿轮箱Gearbox偏航装置Yawingdevice电子控制器Electroniccontroller液压系统Hydraulicsystem发电机Generator塔Tower风力发电机结构-19-20史蒂夫•索耶关于风能的发言史蒂夫•索耶：风能确是一种主要的供电技术，发展风能将使电力部门在十年内大大减少温室气体排放量。SteveSawyer:Windpowerisreallythemainsupplysidetechnologythatcanmakeadifferenceintheshorttermintheperiodbetweennowand2020,toreduceemissionsinthepowersector.-21您正在收听到的是世界风能协会职员史蒂夫•索耶的讲话。世界风能协会是国际风力发电产业的同行公会。索耶说，风能正得到日益广泛的应用。如今各国政府都在考虑如何以低能耗发电，同时减少温室气体排放，抵抗全球变暖。他说去年全球风力发电总量增加了40%。You’relisteningtoSteveSawyeroftheGlobalWindEnergyCouncil,atradeassociationthatrepresentsthewindindustryattheinternationallevel.Useofwindpowerisontherise,Sawyersaid.Governmentsaroundtheworldareconsideringhowtogeneratemoreelectricityandemitfewerofthegreenhousegasesthoughttobewarmingtheplanet.Sawyersaidwindpowerproductiongrewby40percentin2009,acrosstheglobe-22史蒂夫•索耶：我觉得中美两国市场的迅猛增长是近几年来最明显的趋势。中国已成为市场增长率最高的国家。今年它将成为世界上最大的电力消费国。而美国去年刚成为全球最大的电力市场。SteveSawyer:Thebiggesttrend,Isuppose,inthelastfewyearsisthat,isthedramaticgrowthinthemarketsinChinaandtheUnitedStates.Chinahasbecomethefastestgrowingmarketintheworldbyfar.Itwouldbethesinglelargestmarketthisyear.AndtheUnitedStatesjustlastyeartookoverfirstplace.-23索耶表示，目前风力发电仅占美国电力市场的2%。随着电网升级，到2030年风能的市场份额将上升20%甚至更多。FortheU.S.,Sawyersaid,upgradestotheelectricgridcouldhelpraisewindpower’ssharefromabout2%oftotalelectricitytodayto20%ormore,bytheyear2030.史蒂夫•索耶：我们国家拥有丰富的电力资源，从这个角度来看，供电是不成问题的。然而真正的挑战在于如何有效利用这些资源，充分保证电力市场的供应SteveSawyer:Youcouldsupplythewholecountrywithelectricity,noproblem,intermsoftherawresource.Butwehavetoactuallycapturethatandthengetittothemarkets.That’sthechallenge.-24•Greatereconomiccompetitivenessandpotentialdevelopment•Lowerdamagetothelandandecologicalcondition.•Lessairpollutionandlesscarbonemissionsandlessenvironmentalcosts.•Windpowercanbeusedfordistributedgeneration,thereislessriskofpowergenerationfacilitiesfortheyarenotconcentratedtogether.•经济竞争力和潜在能力的发展。•土地和生态破坏减至最少。•空气污染和碳排放等环境成本低。•风能是分布式发电的，发电设施不是太大的风险集中。-25•OneoftheecologicalproblembroughtbytheWindpowergenerationisthatwindturbinedisturbthelifeofbirds.Thecurrentsolutionistogenerateelectricityfarawayfromtheshore,powergenerationefficiencyishigh,buthigherprices.•Insomeareas,windpow