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

  • 标签: yearly installed SHORTAGE CUSTOMER switch FORCED
  • 简介:IntroductionAnalysisandforecastofloadcharacteristicsareimportantaspectsinpowermarketanalysisandprediction.Correctlymasteringgridloadcharacteristics

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

  • 标签: 2005年 电力工业 电力需求 发展趋势
  • 简介:Thearticlepresentsthatinthehydropowerplanning,theregulationcapacityofreservoirsshouldbemeasuredbytheirenergystoragecapacity.BycalculatingtheenergystoragecapacityofthelargereservoirsinChinaandabroad,itshowsthattheenergystoragecapacityoftheLongyangxiaReser-voirontheupperYellowRiverisoneofthelargest.EnormousbenefitcanbeobtainedthroughcompensationregulationofthecascadehydropowerprojectsontheupperYellowRiverandthenearbyinterbasinhydropowerprojectsbytheaidoftheenergystoragecapacityoftheLongyangxiaReservoir.

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

  • 标签: 煤炭运输 运输系统 输电能力 铁路运输能力 优化 电力传输
  • 简介:Beganfromearly1992,ChongqingPowerSupplyBureauhadspent3andhalfyearstobuildupapowerloadmanagementsystemconsistingofImasterstation,6relaystations,1280terminalsandthedistributedmonitoringdevice.Thissystemdistributesinthehillyandmountainousareaswheregeographicallycomplicatedandtheloadwidelyscatters,itcansuperviseabout72%loadandcurtailmorethan15%loadwhen

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

  • 标签: 西安 高压设备 容量 发展策略
  • 简介:Themedium-andlarge-sizedhydropowergeneratingunitswith4270MW(singleunitcapacityof25MWandabove)wereputintooperationin2000.BytheendofDecemberlastyear,China’stotalhydropowerinstalledcapacitycameuptoover77000MW,stillrankingsecondintheworldandthecapacityunderc

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  • 简介:Throughmanyyears'cooperation,SGCCandShanghaiSilicateResearchInstituteofChineseAcademyofSciencesuccessfullydeveloped650ampere-hourscapacitysodium-sulfurmonomericstoragebatterywiththeindependentintellectualpropertyright

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

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