简介:1.Speedupthedevelopmentofthefifthenergyresource-electricalenergy-savingTheworldexperiencedseriousenergycrisestwiceinthe1970’s,butthesituationwasalleviatedatthebeginningofthe1980s.Comprehensivereportspublishedbyinternationalenergyorganiza-tionsin1986summeduptheimportantachievementsofenergy-sav-ingobtainedin19mainindustrializedcountriesintheperiodof1973to1985.Theirprimaryexperienceistobringaboutthestructuralenergy-savingbyrelyingonthetechnicalprogress,thatis,changingthehighenergyconsumptionindustriestolowconsumptionones.Thischangetidedthemsuccessfullyovertheenergycrises,moreo-
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简介:1.ThePowerIndustryandCogenerationinChina1.1ThePowerIndustryinChinaThepowerindustryhasdevelopedrapidlyinChinainrecentdecades.In1994,totalelectricitygenerationwas927.8TWhandthetotalinstalledcapacitywas199.80GW.Itisbrokendownasfollows:hydropower49.0GW.24.5%;thermalpower148.73GW,74.4c/c:andnuclearpower2.1GW,0.7%.
简介:TheelectricpowerindustryisafundamentalindustryinthenationaleconomyandtheChineseGovernmenthasalwaysputthepowerindustryonanimportantpriorityfordevelopment.Atpresent,keepingcontinuousrapidandstabledevelopmentofthepowerindustryfacestwochallengingissues—shortageofprimaryenergyresourcesandseriousenvironmentalpollution.Sothecleancoaltechnology(CCThereinafter)hasbeenplacedasoneofthemostpriorrealmfordevelopmentonthe
简介:Inlinewiththerapidlyexpandingelectricpowerindustryinthiscountry,Chinanowownsaworkforcetotalingmorethanhalfamillionofstaffandworkersengagedintheconstructionofthermalpowerprojects;alsothetechnologyemployedintheirworkhasexperiencednotableprogress.Intheearlyfifties,constructionworkmainlyreliedonmanualmanipulation.Besidestheuseofhand-orelectric-drivenover-headcranesinsidethemachine-house,verticaltransporta-tiondependedmainlyonhoistersandpulleys;chainblockswerescarceatthattime.Horizontaltransportationwasmainlydonebymanualpulley-blocksandrollers,sometimesalsowithwinches.Electric-orgas-weldingbyhandwasthecommonprac-tice.Inaword,thetechnologywasbackwardandlabor-inten-
简介:ThispapersummarizesthebasicsituationofthewindpowerdevelopmentinChinain2008,andcarriesoutabriefanalysisoftheproportionofthenationwidewindpowertotheglobalwindsectoraswellastothetotalinstalledcapacityinthecountry.ByreviewingtheremarkableachievementsinChina'swindpowerdevelopmentsincetheenforcementoftheRenewableEnergyActofthePeople'sRepublicofChina,someissuesconcerningthepolicyeffectandwindpowerdevelopmentaretouchedon.
简介:ProspectofFutureTransmissionandDistributionDevelopmentinChinaShenGencaiMinistryofElectricPower1.PresentSlateDuringtherecent18...
简介:IntroductionThehydropowerandwindpowerbeingthekindsofre-newableenergythatarerelativelyrichinresourcesbutarere-strictedlargelybythelocality.Onthecontrary,photovoltaicpowerislessrestrictedbythelocalityoftheresources,andissafe,reliable,noiseless,non-pollutant,andneedsneitherfuelconsumptionnortheerectionoftransmissionfacilities,itmayberealizedrightinplacesofconsumptioninlargeorsmallscale
简介:1.IntroductionNorthwest-andNorth-Chinaarerichincoalresources,buttheclimateoftheseregionsissemi-aridandshortofwaterresources.Forthisreason,therecirculatingwatersupplysystemsarepre-dominantlyutilizedinfossilpowerplants.Thenaturaldraftcoolingtowersaregenerallyselectedfortheserecirculatingsystems.Ac-cordingtostatisticsabout50%ofthethermalpowerplantsinChinaareequippedwithnaturaldraftcoolingtowers.Thecoolingtowerswithcast-in-placereinforcedconcretehyperboloidalshellarepreferablyadoptedinChina,becauseofthenot-too-severeclimateinwinter,thelowearthquakeintensitiesand
简介:ForewordItiswellknownthatallelectricalmachinesandequipmentsaremademainlyofconductingmaterials,magneticmaterials,struc-turalmaterialsandinsulatingmaterials.Insulationmaterialsaresub-jectedtomechanical,thermalandelectricalstressesandexposedtomoisture,dirt,chemicalcorrosionandradiation.Thecombinedac-tion,intensityanddurationofsuchstressesandeffectssetalimitto
简介:Uptothefifties,bulkoilcircultbreaker(c.b.)wasthemainbreakertypeusedinChina.Fromthesixtieson,allEHVc.b.wereair-blasttype,butowingtotheirairleakageandfrequentmaintenanceworkrequired,alotofminimumoilc.b.wereimported;intheseventies,minimumoilc.b.wasthemainbreakertypeusedalloverthecountryinthevoltagerangeof6-220kV;atthebeginningoftheeighties,500kVSF6.c.b.wereputinserviceandgraduallyex-tendeddownto220kV,110kVandevento10kV,theirnumberisincreasing.Atthesametime,mediumvoltagevacuumc.b.beganto
简介:Basedonananalysisofthemisunderstandingsandproblemsconcerningwindpowerdevelopment,thispapersummarizestheexperiencesofthecoordinateddevelopmentofwindpowerandpowergridsinforeigncountries,andproposesprinciplesandstrategiesforthecoordinateddevelopmentofwindpowerandpowergrids,andrelatedmeasuresandsuggestionsforlargescaledevelopmentofwindpowerinChina.
简介:Installationdiagnostictechnologyisasyntheticappliedtechnol-ogyemergingrecently,whichisamethodologyforevaluatingthestress,worsening,fault,strength,functionetc.,withoutdisassem-blingtheinstallation.Theposition,degreeaswellascauseofabnor-malitycanbedetectedduringoperationusinganinstallationdiagno-sissystem,therebypredictingandevaluatingitsreliabilityanddeter-miningtherepairingmethod.
简介:Thereweretwosessionsandonepaneldiscussiononrelayingpro-tectionattheconference,withparticipantsfromAustralia,Canada,Japan,Korea,arepresentativeofthewellknownrelaymanufacturerABBandfromthehostcoun-tryChina.Thepaperspresentedatthesessionscoveredalargevarietyofsubjectsrelatedtoprotection,includingnovelpro-tectionprinciplesandschemes,computer
简介:Astheworld’sauthoritativeorganizationonenergyinformation,theInternationalEnergyAgency(IEA),whichwasfoundedin1974,releasesKeyWorldEnergyStatisticseveryyearfrom1997(hereinafterreferredtoasthe"KeyData").The"KeyData"releasedin2007announcedthe2005statistics,andalsoprovidedthe1973statisticsforcomparison.Fromthepublisheddata,wecanclearlyfindthedevelopmentpathandtrendoftheworldenergyandpowerindustry.Also,China’sstrongdevelopmentmomentum,high-speedgrowthofenergyconsumptionandtheenormouschallengesinthesustainableenergysupplyareespeciallynoticeable.Thispaperreviewedthe"KeyData"toperceiveChina’sEnergyDevelopment.Theanalysisandinterpretationofthesedataarepurelyfromtheauthor’spointofview.