2023学年完整公开课版参观变电站

VisitingaSubstation00UsefulExpressions1.Let'sgoupstairs.2.Whataretheclassificationsofthesubstations?3.Thearrangementofthebusbaratasubstationisveryimportant.4.Socomplicated!5.Thankyouforallyourhelp.01FengWei---adirectorofthesubstationMaryandYuanPing---atraineeMary:Mr.Yuan,we'vereachedtheLujiacunSubstation.Yuan:Good!adirectorofthesubstation站长substation变电站02Mary:Let'sreporttothedirectorfirst.Yuan:Yes.(afewminuteslater)03Mary：OK.Thedirectorisonthesecondfloor,solet'sgoupstairs.Feng:Howdoyoudo?You'rewelcome.Yuan:Howdoyoudo?Thankyou,sir.goupstairs

上楼04Mary:Wehaveonlylearnedaboutthesubstationinbooks,sotodayweareheretoseeit.Feng:Asubstationisanassemblageofequipmentforthepurposeofswitchingorchangingorregulatingthevoltageofelectricity.Substationsformthefinalpointinasystemfortransmissionanddistributionofelectricalenergy.

transmissionanddistributionofelectricalenergy输送和分配电能05Yuan:Whataretheclassificationsofthesubstations?Feng:Themainclassificationsare:step--upsubstation,primarygridsubstation,secondarysubstationanddistributionsubstation.06Yuan:What'sthefunctionofastep-upsubstation?Feng:Generallythepowerisgeneratedatthegeneratingstationsat10.5kV.It'snoteconomicaltotransmitthehugepoweratthisvoltage.07Mary:Howhighwillthepowerbesteppedup?Feng:Itissteppedupto35,110,220,330kVor500kV,dependinguponthequantumofpowerandcenters.08Yuan:Whataretheprimarygridsubstationandthesecondarysubstation?Feng:Theprimarygridsubstationiscreatedatthemainloadcenters.Therearemainly220,330kVor500kVsubstationswherethevoltageissteppeddownto110kVor35kV.theprimarygridsubstation一次变电站thesecondarysubstation二次变电站09Mary:Thevoltagewillbefurthersteppeddown,right?Feng:Right.Atthesecondarysubstations,110kVor35kVissteppeddownto10kV.stepdown降低stepup升高10Mary:Whatequipmentwouldasubstationinclude?Feng:Itincludespowerandinstrumenttransformers,lightningarrestors,circuitbreakers,disconnectingswitch.capacitorbanks.andacontrolhouse,wherethestationcontrolequipmentandprotectiverelaysarelocated.instrument仪器lightningarrestors避雷器circuitbreaker断路器11Yuan:Howisthebusbaratasubstationarranged?Feng:Thearrangementofthebusbaratasubstationisveryimportant,Variousimportantbusbararrangementsarethesinglebusbar,mainandtransferbusbar,doublebusbar,meshorringsystembusbar,breakerandahalfscheme.busbar母线transferbusbar旁路母线doublebusbar双母线12Mary:Socomplica