简介:220-kVandaboveclasstransmissionandsubstationfacilitiesIn2005therewere325supplyenterprises(including29EHVtransmissionandsubstationenterprises)and221generationenterprisesalloverthecountry.Mainreliabilityindexesof13kindsoftransmissionandsubstationfacilitiesin2004and2005areshowninTable1.Itcanbeenseenthatthereliabilityindexesin2005remainedatahighJevel,andtheiravailabilityfactorcameuptoover98%.Thisembodiedthattheenterpriseswerestillabletoputthereliabilitymanagementworkinthe
简介:1.ThepresentmanufacturingsituationofChina’sthermalpowergenerationequipmentBytheyear1995.developmentofChina’selectricpowerindustryhasexperiencedacourseofahundredyears.Overaperiodoftheinitial50years.China’sdevelopmentofelectricpowerwasslow.Atthetimeof1949,thetotalinstalledcapacityinChinawas1,850MWandtheelectricitygeneratedwasonly4.3billionkWh.Duringthepast46yearsafter1949,herannual
简介:Likeothercountriesintheworld,itisinevitabletoencoun-terwithsomeenvironmentproblemsintheprocessofen-ergydevelopmentandutilization.ItisespeciallysoinChinawhereenergystructureismainlybasedoncoal.Atpresent,coaltakes74%ofthetotalprimaryenergywhileoutofthe74%,only23%hasbeenconvertedintocleanandconvenientelectncenergy.Sopredomi-nately,theairpollutioninChinaismainlycausedbycoalsmoke.Inlargecities,theairpollutionbydirectcoalburningisbecomingmoreandmoreoutstandingduetothefastdevelopmentofindustryand
简介:文章对S11-M·R系列变压器在降低空载损耗和减小空载电流方面进行了论述和比较。得出了采用S11-M·R系列变压器,在降低功率损失、减小空载电流、使用寿命和投资回收等方面的突出优势,是较为理想的选择。