简介:Summary1.Thereare12powersystemsincluding5regionalpowersystemswithover1000MWofcapacityeach.In1989CentralandEastChinapowersystemswereinterconnectedbya±500kVHVDCLine.2.Thehierarchicalcontrolorganizationcanbedividedinto5levels,i.e.NCC,6RCCs,25PCCs,250DCCsandmorethan2000CCCs.3.AllcontrolcenterswillbeequippedwithSCADAandEMSinthenearfuture.4.Chinapowersystemhasalarge,dedicatedcommunicationnetworkofitsown.
简介:ThefifthroundoftheEUenlargementonMay1,2004turnsthelong-cherished"utopia"ofaunifiedEuropeintorealitythroughapeaceful,economicapproach.①Thispaperattemptstomakesomeexplorationsonthefollowingissues:Whytheoptionforaneconomicapproach?Whatchangeshavetakenplaceinthenatureandbehavioroftherelevantnations?WhatimpactwilltheeventhaveonEuropeanstabilityandbalance?②HowwilltheEUkeepequilibriumthroughsystemicmechanismsincaseofinter-statedisputessoastolaythepoliticalgroundworkforapeacefulunification.
简介:DynamicCurrentSharinginParalelingPowerMOSFET①WANGBaocheng,WUWeiyang,ZHANGChunjiang(YanshanUniversity,Qinhuangdao066004,CHN)Ab...
简介:Onthebasisofthehistoricalstatisticsonpowerconsumption,thispaperanalyzesthepowerconsumptiontrendsinChinabymeansofanalyzingmethodsbasedonconsumptionproportioncurve,fixedbasecurve,month-on-monthincreasecurveandfixedbaseindexcurve.Specialattentionsarepaidtotheconsumptiontrendinthefirsthalfof2010,andpolicystrategiesaresuggestedtargetingtheproblemsreflectedbytheconsumptiontrend.
简介:Withclimatechangedevelopingintooneoftheglobalfocalissues,thestrugglefortheinternationalpowerofdiscourseonclimatechangetendstobeintensified,Thestruggleisinessencethecontestfornationalinterestrevolvingaroundeconomicanddevelopmentinterest,Theweightofinternationalpowerofdiscourseacquiredbyeachcountryisdeterminedbyitsnationalstrengthanditsrelevantpoliciesaswell.
简介:ThisarticleconsidersweightedapproximationofmultivariatefunctioninreproducingkernelHilbertspace,andgivesarelationbetweennthminimalerrorsforstandardandlinearinformationintherandomizedsetting.Usingthisrelationwecanestimatethenthminimalerrorforstandardinformationbythenthminimalerrorforlinearinformation,andstudythetractabilityandstrongtractabilityforthesetwoclassesofinformation.
简介:Overthepast20years,thelevelofpowerreliabilityinChinahasbeenraisedsubstantially.Averageequivalentavailabilityfactorof100-MW-classthermalpowerunitswentupfrom79.93%to91.70%intheperiodof1986-2004.Averageunplannedoutagetimesperunitcamedownfrom7.85to2.1.RSIofurbanusersrosefrom98.90%to99.82%intheperiodof1991-2004,correspondingtoadecreaseofaverageannualinterruptiondurationfrom96.55hoursto15.81hours.
简介:Thisthesishascarriedoncomparativeanalysistothepowercharacteristicof5kindsofinstitutionalframeworkofenterprisesatfirst,andhascarriedonthesurveytothedomesticandinternationaltrainofthoughtintheresearchaboutenterprise'spower,thenputsforwardthebasiccontradictioninenterprisesorganization("Thecontradictionsofthecomplexityofmanagement'stargetandpeople'slimitedreason")andessentialfeatureofcurrententerprise'spower("Solidificationofpower"),andthenhasputforwardnewtrainofthoughtinthestudyofenterprise'spowerandorganization("flowofpower"),finallyhasdesignedthewayanddirectionthatthepowerflowedinenterprises,Combiningenterprise'slifecycletheoryandAmericanscholarL.E.Greiner'smodelaboutorganizationdevelopment.
简介:ThispapersummarizesthebasicsituationofthewindpowerdevelopmentinChinain2008,andcarriesoutabriefanalysisoftheproportionofthenationwidewindpowertotheglobalwindsectoraswellastothetotalinstalledcapacityinthecountry.ByreviewingtheremarkableachievementsinChina'swindpowerdevelopmentsincetheenforcementoftheRenewableEnergyActofthePeople'sRepublicofChina,someissuesconcerningthepolicyeffectandwindpowerdevelopmentaretouchedon.
简介:XinjiangPowerCompanyandTachengAdministrativeOfficejointlysignedtheMinutesofTalksonPromotingDevelopmentofTachengPowerGridonNovember2.Accordingtotheminutesoftalks,XinjiangPowerCompanypromisedtomakeaninvestmentof1.76billionYuaninenhancingtheconstructionofTachengPowerGridinthe11thFive-YearPlanperiod.Thecompanyplannedtoconstructa750-kVsubstationwithacapacityof1500MVAinUsuCityanda750-kVlineof200km;toconstructthree220-kVsubstationswithatotalcapacityof360MVA,220-kVlineof98kmand220-kVlineupgradeof90km;toconstructten110-kVandextendeight110-kVsubstationswith370MVAsubstationcapacitynewlyadded;toconstruct110-kVlineof375kmandretrofit110-kVlineof93km.Bytheendof2008,10-kVlinesof135km,400-Vlinesof118km,220-Vlinesof21kmaswellas123transformerswillbebuilt.
简介:Inthefirsthalfofthisyear,theutilizationhoursofther-malpowerequipmentwere2748,adecreaseof178hoursunderthoseofthesameperiodlastyear.Itispredictedthatthescaleofgeneratingequipmenttobecommissionedwillreach75GW.Theinvestmentinpowergridconstructionwillbenear200billionYuan.Therapidincreaseofinstalledcapacitywasadecisivecontributorinalleviatingthesituationofpowersupplyand
简介:JixianThermalPowerProjectissitedatthegeographi-calandelectricalloadcenterofBeijing,TianjinandTangshanthreemunicipalities,occupyingatotalareaof315hec-tares,inwhich134hectaresareofpowerplantandconstructionzone.Accordingtothelongtermplanning,theultimateplantcapacitywillbe2200MW,whilethecapacityofthefirstphaseis1000MWwithtwo500MWsupercriticalsteamparametercoal-firedthermalunitstobeimportedfromRussia,theseunitsrankfirstinbothunitca-pacityandsteamparameterinBeijing-Tianjin-TangshanPowerNet-work.ThisProjectwasapprovedbytheStatePlanningCommissioninOctober1989withanestimatetotalconstructioncostof2billionyuanRMB,whichisjointlyfinancedbytheStateEnergyInvestment
简介:Wang:TheU.S.statedpurposesofmilitaryactionsagainstIraqareto"overthrowSaddam"and"transformIraq."Iamafraidsuchactionswouldcauseabigstir.Tang:Ithinkso.AmericanmilitaryactionsagainstIraqwillnotonlypromotethebirthofanewIraqbutalsochangetheinternationalrelationsandmilitarybalanceintheMiddleEast.Washington’srevealedintentionshowsthatithopestocreateademocraticandpro-