简介:Theyear2008seesaturningpointinChina’sstrategyofpromotingenergysavingandemissionsreduction,aswellasdevelopmentofrenewableenergy.OilpricebreakingUS$140andlargeareainChinasufferingfrom
简介:PowersalesofBeijingPowerSupplyBureaureached31.81TWhin2000,itwasincreasedby3.563TWhoverpreviousyear,oragrowthrateof12.61%.Itwastheyearofhighestgrowthsince1978.Accordingtoanalysis,thehighgrowthrateofelectricityconsumptionisattributablemainlytonaturaldeman
简介:ConsideringbothChina'senergysecurityandthenon-renewabilityandscarcityoffossilfuels,developingnewenergies,realizingthetransformationofthenation'senergystructure,andreducingtherelianceonforeignenergyresourceswillbethelong-heldgoalsofthenationalenergypolicy.Inrecentyears,theChinesegovernmenthasintroducedaseriesofpreferentialpoliciestopromotethedevelopmentofnewenergies.Thelatestpolicyonelectricitypriceadjustmentannouncedattheendoflastyear,forinstance,involvedthestandardriseofsubsidiesforrenewableenergy,whichisexpectedtofacilitatethedevelopmentofnewenergies.
简介:Thispaperisconcernedwithwatersavingforwater-loopcoolingtowersysteminpowerplants.Anewlydevelopedwatersavingdeviceofswirlingflowispresented.Thekeypointisthatthenewwatersavingdevicemakesthesteamswirlupalongthedevicewallratherthanengenderlaminarflowinacorrugatedplate.Thecorrugatedplatedevicecansaveapproximately10percentofthetotallostwater.Incontrasttothescalemodelofcorrugatedplatewatersavingdevice,experimentalanalyseshavedemonstr...
简介:Thispaperpresentsauniquenoveldesignofthephase-shiftedcascadehighvoltageinverter.Thehighvoltageinverterutilizesfewerpowerswitchesandsuppliesabalanceload.TheusageofphaseshifttransformerandphaseshiftingSPWMensuresthatinputandoutputharmonicwavecontentislowandoutputvoltagechange(du/dt)hasalowrate,meetingalltherequirementsofthepowerauthorities.Themostout-standingfeatureistheenergysavingwithveryfastcostrecovery.
简介:Chinaisrichincoalbedmethane.Accordinglatestsurvey,coalbedmethanegasreserveswithaburyingdepthoffewerthan2000mamountto3600billibeingequalto45billiontonsofstandardcoalor35tonsofstandardoil.totheurymgonm3,billionNDRChasissuedthe11thFive-YearProgramforEx-ploitationandUtilizationofCoalBedMethaneinAugust.Itisplannedthattheproductionofmethanegaswillcomeupto10billionm3,andanindustrialsystemofexploitingand
简介:Therearedifferentlayoutschemesfor330-500kVswitchyardwithoneandahalfbreakerconfiguration.However,asfarastheUHVswitch-yardsforpowerplantsconcerned,itisobviousthatsomelayoutschemestakeuptoomuchareaandsomeothersarenotcompatiblewiththegenerallayoutofpowerplants.Inordertoovercometheaboveproblems,anewalignedswitchyardlayoutscheme,i.e.,allcircuitbreakersanddisconnectingswitchesarealignedinonerowisdiscussedinthispaper.
简介:Ⅰ.PrefaceStartingisoneoftheimportanttopicsofasynchronousmo-tors.Variedmethodsoveralongperiodoftimeforimprovingthestartingcharacteristicsoftheasynchronousmotorshadbeenadoptedbydomesticandforeignelectricalengineers.Themethodswhichinnovateontheinternalstructureoftheelectricalmotorssoastoimprovethestartingcharacteristicsfallintotwokinds.Thefirstoneistochangethestructureofthestatorwindingofthemotors,forinstance,the"star-delta"starting,the"prolongedsidetriangle"
简介:Thevariable-speedconstant-frequencywindelectricconver-sionsystemcanallowtherotationalspeedofwindturbinetovarywithwindspeedandoperateataconstantandoptimaltipspeedratio.Therefore,thewindturbinecanmaintainhighpowercoeffi-cientoverwiderangeofwindspeedandthespeedregulatingmechanismofwindtrubinecanbesimplified.
简介:Inordertopromotethedevelopmentofnewandrenewableenergytechnologies,theNationalDevelopmentandReformCommissionhasrecentlydecidedthatitwillgivebackingtothehigh-techindustrializationofnewandrenewableenergyresourceswithspecial-purposefundsduringtheperiodof2005-2007.Thestate-supportedkeypointsareasfollows.
简介:1.0IntroductionWaigaoqiaoPowerPlantisoneofimportantinfrastructureofShanghaiPudongNewArea.Thecapacityofthefirstphaseprojectisof1200MW,withfour(4)domesticmadeandtechnologyintroduced300MWcoal-firedunits.ThisprojectwasapprovedbyStatePlanningCommissioninApril1990,andalsoassignedbytheMinistryofEnergyandMinistryofMachineryand
简介:OnMarch251996,theelectronbeamfluegasdesulfurizationdemonstrationprojectofChengduCogenerationPowerPlantstartedformalconstructionThisisatpresentthelargestelectronbeamdesulfurizationprojectinpowerplantsintheworld,andisjointlyconstructedbySichuanElectricPowerBureauandtheEBARAWorksofJapan,ThisisanimportantcooperationprojectinenvironmentprotectionbetweenChinese