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1、Photovoltaicpowergeneration1.Theworld'scurrentsituationanddevelopmentofphotovoltaicindustryforecastSolarcellsistheuseofthematerialeffectsofphotovoltaicsolarenergyintoelectricalenergydirectlytothesemiconductordevices,alsoknownasphotovoltaiccells.In1954,thefirstpractica
2、lsiliconsolarcells(η=6%)andthefirstatomicpowerstationatthesametimeintheUnitedStateswasbornin1959intothespacesolarcellapplications,theenergycrisisin1973aftertheapplicationstepbysteptotheground.Photovoltaicpowergenerationisdividedintoindependentgridphotovoltaicsystemsan
3、dphotovoltaicsystems.IndependentPVpowerstation,includingthevillagesinremoteareasthepowersupplysystem,solarhouseholdpowersystem,communications,signalpower,cathodicprotection,suchassolarstreetlampswithbatteriescanrunindependentlyofthephotovoltaicpowergenerationsystem.Gr
4、idPVsystemisconnectedwiththepowergridtofeedelectricitygridPVpowersystem.CurrentlytechnicallyachievablegridPVpowersystemintheway:housingfixed-gridsystemandpowerplantsystemofthedesert.Useoftheexistingroofsystemistheeffectiveareaoftheroofconstruction,installationandnetwo
5、rkofphotovoltaicpowergenerationsystem,thesizeofafewkWpgenerallyrangingfromseveralMWp.Desertpowerplantisuninhabiteddesertareainthedevelopmentandconstructionoflarge-scalephotovoltaicpowergenerationsystemsandnetworks,thesizeofseveralGWpfromthe10MWpsize.Inrecentyears,ther
6、apidincreaseinsolarcellproduction,for8yearsin30%growthin2004,evenmorethantheannualgrowthrateof60percent,reaching1200MW.2.TheChinesePVmarketandindustrystatus2.1China'ssolarmarketdevelopmentChinastartedresearchonsolarcellsin1958,in1971,Chinasuccessfullylaunchedthefirsta
7、ppliestothe2ndsatelliteDongfanghong.Startedin1973forground-basedsolarcells.China'sphotovoltaicindustryin80yearsagoisstillinembryonicform,theannualproductionofsolarcellshasbeenhoveringbelow10KW,priceisalsoveryexpensive.Asaresultofrestrictionsonpricesandproduction,marke
8、tdevelopmentisveryslow,andapartfrom,asthesatellitepowersupply,onthegroundonlyforlow-powersolarpowersystems,suchasbeaconlight
