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简介：IntroductionInrecent10years,duetofastdevelopingofeconomyinChina,seriouspowershortageoccurs.Thesystemfrequencyoftenfelltoabnormalvaluesinmostnetworks.Forthesecurityofpowersystems,forcedswitchoffoffeedersfromthedistributionsubstationoftenhappendtorecovernormalfrequency.Infact,thespeedofdevelopmentofChinesepowerindustryisveryhighinthisperiod.Theyearlyaverageincreasingrateofgeneratingcapacitywasabout8%.Theyearlynewlyinstalledca-pacitywasmorethan9000MWinrecent4years.Buttheannual

简介：IntroductionAnalysisandforecastofloadcharacteristicsareimportantaspectsinpowermarketanalysisandprediction.Correctlymasteringgridloadcharacteristics

简介：AccordingtotheNationalDevelopmentReformCommission(NDRC),thewholesociety'selectricityconsumptionisexpectedtocomeupto2400TWhthisyear.Inordertodecreasethecontradictionbetweensupplyanddemand,anewlycommissionedgeneratingcapacitynationwidewillbe65GWin2005.

简介：Thearticlepresentsthatinthehydropowerplanning,theregulationcapacityofreservoirsshouldbemeasuredbytheirenergystoragecapacity.BycalculatingtheenergystoragecapacityofthelargereservoirsinChinaandabroad,itshowsthattheenergystoragecapacityoftheLongyangxiaReser-voirontheupperYellowRiverisoneofthelargest.EnormousbenefitcanbeobtainedthroughcompensationregulationofthecascadehydropowerprojectsontheupperYellowRiverandthenearbyinterbasinhydropowerprojectsbytheaidoftheenergystoragecapacityoftheLongyangxiaReservoir.

简介：As"congestioncosts"ofcoaltransportationarefairlyhigh,asoundcomparisonofeconomicefficiencybetweencoaltransportationandpowertransmissionshouldtake"congestioncosts"ofcoaltransportationintoaccount.Otherwise,itcannottrulyreflectpowertransmission’sefficiencyadvantage.Inadditiontoraisingrailwaycapacity,theChinesegovernmentshouldalsoincreasepowertransmissiontorelievethetransportationpressureonrailwaytocutdown"congestioncosts."

简介：Beganfromearly1992,ChongqingPowerSupplyBureauhadspent3andhalfyearstobuildupapowerloadmanagementsystemconsistingofImasterstation,6relaystations,1280terminalsandthedistributedmonitoringdevice.Thissystemdistributesinthehillyandmountainousareaswheregeographicallycomplicatedandtheloadwidelyscatters,itcansuperviseabout72%loadandcurtailmorethan15%loadwhen

简介：Theretrofitprojectof800-kVlargecapacityexperimentsysteminXi'anHighVoltageEquipmentResearchInstitutewascompletedsometimeago.Thesystemcanmeetrequirementsofwholepoleexperimentof550-kV63-kAand800-kV63-kAcircuitbreakersbyIECNorm.Itscapacitortowerisover100tinweightand15minheight.Thevoltageofeachcapacitorbankcanreach1000kV.

简介：Themedium-andlarge-sizedhydropowergeneratingunitswith4270MW(singleunitcapacityof25MWandabove)wereputintooperationin2000.BytheendofDecemberlastyear,China’stotalhydropowerinstalledcapacitycameuptoover77000MW,stillrankingsecondintheworldandthecapacityunderc

简介：Throughmanyyears'cooperation,SGCCandShanghaiSilicateResearchInstituteofChineseAcademyofSciencesuccessfullydeveloped650ampere-hourscapacitysodium-sulfurmonomericstoragebatterywiththeindependentintellectualpropertyright

简介：Chinabegantheresearchanddevelopmentofrenewableenergygenerationsince1970s,inparticularintheEighthFive-yearPlanperiod,theStatemadecloserattentiontotheresearchanddevelopmentofrenewableenergy,thereforethetechnicallevel,applicationscaleandeconomic,socialbenefitshaveseengreaterprogress.Thecombinedcapacityofrenewableenergygenerationreached100MWattheendof1994.Anditisplannedacombinedcapacityof1236MWwillbetargetedfortheyear2000.

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