简介:Thispaperproposesatechniquetomitigatethevoltageunbalanceissuecausedbythehighpenetrationofphotovoltaic(PV)systemsintothelowvoltagedistributionnetworks(LVDN)usingasinglephaseenergystoragesystem(ESS).TheESScomprisesabi-directionalpowerflowinverterandabatterybank.Thesystemiscapableofabsorbingtheexcesspoweranddeliveringpowertothenetworkinordertokeepthevoltageunbalancefactor(VUF)belowthestatutorylimitof1%.Investigationsarecarriedoutintheexperimentalsmall-scaleenergyzone(SSEZ).TheexperimentalresultsdemonstratethattheESSiscapableofmitigatingtheVUFofthenetwork.
简介:JointlysponsoredbytheChineseMinistryofEnergyandtheCanadianFederalDepartmentofIndustry,ScienceandTechnology,Sino-CanadianseminarsonhydropowertechnologywereheldinsuccessioninBeijing,ChengduandKunmingbetweenNovember18-27.Morethan200expertsat-tendedtheseminarsrespectively.Inthecourseofeachseminarheld,ChineseparticipantsreviewedwithinterestCanadianprac-ticesandsomeoftheuniquetechnologiesdevelopedintappingtheirhydropotentialsoveryearswhileinthemeantimeChinesecounterpartsalsohighlightedthehistoric,currentandfuturepro-grammeforhydropowerdevelopmentinChina.AsindicatedinhisopeningspeechbyMr.LuYoumei,ViceMinisterofEnergy,
简介:HaveyoueverheardofAgathaChristie,anexcellentwriter?AgathaChristieis,withoutadoubt,themostfamousmystery1intheworld.Herbookshavebeentranslatedintomorethan100languages.All77novelsandstorycollectionsshewrotearestillonthemarket25yearsafterher2.AgathaChristiewasbornin1890inasouthwestEnglandseasidetown.She3averycomfortablechildhoodinabighousewithplentyofservants(仆人).Agathawasknown4animaginativechild.Withhersisterandbrotherawayatschool,sheoftenplayedalone.Shepassedthetimeby5upstorieswhichshetoldtoherself.
简介:Asanon-standardcoreequipmentofthe-101℃classrectisolunit,thehydrogensulfide/carbondioxideabsorberfabricatedbytheWuhanDonghaiHeavy-dutyPetrochemicalEquipmentManufacturingCompanyhassuccessfully
简介:Lowpoweraddercircuits,SERF,10T-Ⅰ,10T-Ⅱ,10T-Ⅲandacomplementaryadder(28T)atphysicallayoutlevelareevaluated.Simulationsbasedontheextractedaddercircuitlayoutsareruntoassesshowvariouscircuitsetupscanimpactthespeedandpowerconsumption.Inaddition,impactsofoutputinvertersonthecircuitperformanceofmodifiedSERFand10Taddersduetothresholdlossproblemarealsoexamined.Differencesamongtheseaddersareaddressedandapplicationsoftheseaddersaresuggested.
简介:Ionchannelsareessentialforcellularsignaling.Voltage-gatedionchannels(VGICs)arethelargestandmostextensivelystudiedsuperfamilyofionchannels.Theypossessmodularstructuralfeaturessuchasvoltage-sensingdomainsthatencircleandformmechanicalconnectionswiththepore-formingdomains.Suchfeaturesareintimatelyrelatedtotheirfunctioninsensingandrespondingtochangesinthemembranepotential.Inthepresentwork,wediscussthethermodynamicmechanismsoftheVGICsuperfamily,includingthetwo-stategatingmechanism,sliding-rockingmechanismofthevoltagesensor,subunitcooperation,lipid-infiltrationmechanismofinactivation,andtherelationshipwiththeirstructuralfeatures.