简介:OnNovember18,2001,thesecondphasecofferdamofThreeGorgesProjectwasstartedtodismantle.Thedismantlementofcofferdamwithheightof80oddm,weircrestwidthof15mandoveralllengthof2.4km,marksthebeginningofthesecondtimecutoffofThreeGorgesProject—thecutoffofdiversion
简介:Thispaperpresentsauniquenoveldesignofthephase-shiftedcascadehighvoltageinverter.Thehighvoltageinverterutilizesfewerpowerswitchesandsuppliesabalanceload.TheusageofphaseshifttransformerandphaseshiftingSPWMensuresthatinputandoutputharmonicwavecontentislowandoutputvoltagechange(du/dt)hasalowrate,meetingalltherequirementsofthepowerauthorities.Themostout-standingfeatureistheenergysavingwithveryfastcostrecovery.
简介:ChinaandCanadahavesignedaprojectawardagreementfortheco-operationfortheQinshanPhaseⅢCandunuclearpowerproject,markingsignificantprogressincommercialnegotiationsbetweenbothcountriesontheconstructionoftwo700megawattclassCanduunits.Theagreement,signedbetweentheChinaNationalNuclearCorp(CNNC)andtheAtomicEnergyofCanadaLtd(AECL)inBeijingonJuly12,finalizedthepriceandcommercialtermsforQinshanPhaseⅢ
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简介:OnOctober15,2001,No.7generatingunitofYunnanXuanweiPowerGenerationCorp.5thphaseprojectwassuccessfullyputintooperationandconnectedtothepowernetwork.Hitherto,XuanweiPowerPlant5thphaseextensionprojectwaswhollycompleted.XuanweiPowerPlant5thphaseextensionprojectis