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简介：Guangdong,acoastalprovinceinsouthChina,hadverypoorfoundationofindustryinthepast.AftertheestablishmentofPeople’sRepublicofChinain1949,undertheleadershipandunifiedplanningofthecentralgovernment,economyconstructionofbothindustryandagriculturehavebeenboostedandhencetheprovicialelectricpowerindustryhavedevelopedaccord-ingly.Especiallysince1979,theimplementationofreformationand

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简介：The1stphaseprojectofSanmenNuclearPowerStationinsupportofindependentdevelopmentwasoverallinitiatedinApril.

简介：InordertoeffectivelyimitatethedynamicoperationcharacteristicsoftheHVDC(highvoltagedirectcurrent)powertransmissionsystematareal±500kVHVDCtransmissionproject,theelectro-mechanical-electromagnetictransienthybridsimulationwascarriedoutbasedonadvanceddigitalpowersystemsimulator(ADPSS).Inthesimulationanalysis,thebuilthybridmodel'sdynamicresponseoutputsunderthreedifferentfaultconditionsareconsidered,andbycomparingwiththeselectedfaultrecordingwaveforms,thevaliditiesofthesimulationwaveformsareestimatedqualitatively.ItcanbeascertainedthatthehybridsimulationmodelhastheabilitytodescribetheHVDCsystem'sdynamicchangetrendswellundersomespecialfaultconditions.

简介：Inthispaper,aseriesofmajorpolicydecisionsusedtoimprovethepowergridreliability,reducetheriskandlossesofmajorpoweroutages,andrealizethemodernizationof21stcenturypowergridarediscussed.ThesedecisionswereadoptedbyAmericangovernmentandwouldalsobehelpfulforthestrategicdevelopmentofChinesepowergrid.ItisproposedthatChinashouldtakeprecaution,carryoutsecurityresearchontheoveralldynamicbehaviourcharacteristicsoftheUHVgridusingthecomplexitytheo...

简介：ChinaElectricityCouncilorganizedcompetentauthoritiesacrosstheindustryofelectricpowertoworkoutthe"ResearchReportsonthe12thFive-YearPlanforElectricPowerIndustry"innearlyoneyear,whichprovidesareferenceforgovernmentaldepartmentstoformulatethe12thFive-YearPlanonenergyandelectricpowerindustry.Themagazinewillpublishtheserialreportsincludingpowersources,powergrids,equipmentmanufacture,andpowereconomics.Thispaperpresentsthepartof"powereconomics,"inwhichtheeconomicanalysesontheelectricpowerindustryareputforward.

简介：Powerindustryisoneofthekeyfieldsforenergyconservationandemissionsreduction(ECER)inChina.Inordertoachievethenation'soverallenergyconsumptiontargetandpollutantemissiontargetsetbythe11thFive-YearPlan,tobuildtheresource-conservationandenvironment-friendlysocietyduringthe11thFive-YearPlanperiod(2006-2010),itiscrucialtoimplementthepolicyof"Large(units)InandSmall(units)Out(LISO)"(i.e.,replacingsmallunitswithlargeones)andacceleratetheretir...

简介：在这份报纸，我们从反对称的立方的地图在分离动态系统学习词的组合性质。我们也讨论长度n的原始按摩序列和长度2n的加倍时期的按摩序列的关系，然后决定长度n的所有按摩序列的数字。

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简介：Waveenergyhasdrawnmuchattentionasanachievablewaytoexploittherenewableenergy.Atpresent,inordertoenhancethewaveenergyextraction,mosteffortshavebeenconcentratedonoptimizingthewaveenergyconvertorandthepowertake-offsystemmechanicallyandelectrically.However,focusingthewavepowerinspecificwavefieldcouldalsobeanalternativetoimprovethewaveenergyextraction.Inthisexperimentalstudy,theBraggresonanceeffectisappliedtofocusthewaveenergy.BecausetheBraggresonanceeffectoftherippledbottomlargelyamplifiesthewavereflection,leadingtoasignificantincreaseofwavefocusing.Achievedwithanenergyconversionsystemconsistingofapointabsorberandapermanentmagnetsinglephaselinearmotor,thewaveenergyextractedinthewaveflumewithandwithoutBraggresonanceeffectwasmeasuredandcomparedquantitativelyinexperiment.ItshowsthatenergyextractionbyapointabsorberfromastandingwavefieldresultedfromBraggresonanceeffectcanberemarkablyincreasedcomparedwiththatfromapropagatingwavefield(withoutBraggresonanceeffect).

简介：●FromthestartofnationwidefundraisingforpowerconstructionaftertheDocumentNo.111issuedbytheStateCouncilin1987tothestartofpowerinstitutionalreformearlythiscentury,duringthese20years,China'spowerindustrydevelopedrapidlyandmadegreatachievements.●The20-yearhistoryofraisingfundsforpowerconstructionindicatesthatthispolicyisverywiseandcorrect.Itarousedenthusiasmfromboththecentralgovernmentandthelocalgovernment,andcontributedgreatlytothehis...

简介：Atthebeginningof2008,theCentral,EastandSouthChinasufferedararesnowandicedisaster.Afterthedisaster,powergenerationandpowergridenterprisesfacedabigproblemofpowercoalsupply.

简介：1.TheunitNo.2ofShidongkouSec-ondPowerStation,afacsimileofitsunitNo.1whichisa600MWsuper-criticalunitandhasbeenontrialoperationsincelast

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简介：Thedeterminationofthesoundpowerofasourceissimpleinareverberationchamber,butusuallylowervalvesareobtainedatlowfrequenciesthanthefree-spacevalue.Itisshownthatthesoundpowerdeterminedinareverberationchamberdependsnotonlyonitsfree-spacepower,butalsoonthepositionsofthesourceandthereveiver,aswellasthewaythemeasurementsaremadeandaveraged.Exactandstatisticalformulasarederivedtoaccountforthesefactors.Theresultsexplainthediscrepancyandagreewellwithearlierexperiments.Basedonthetheory,parcticabletechniquesofsoundpowerdetermina-tionarepropesedandcorrectpowerformulaspresented.

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简介：那是一个风和日丽的日子，是去波特兰城四处逛一逛的好时光。我们几个人当时是一个夏令营的管理人员，这天休假，营员们又不在身边，正好出去开开心。这样的天气里，野餐是再好不过的了，所以到吃午饭时，我们就把野餐的目的地定在城里的一个小公园里。鉴于大家的爱好各有不同，我们决定先分开，自己去买自己喜欢吃的东西，几分钟后再在草地处碰头。

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