110kV级与以上变压器安装操作说明书英文版.docx
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110kV级与以上变压器安装操作说明书英文版
Content
1.Introduction
1.1ScopeofApplication
1.2ProductTypeSpecification
1.3TransformerStructure
2.TransportingandHoisting
2.1RequirementforTransporting
2.2SubjectTransporting
2.3SubjectHoisting
2.4SubjectPullingandLifting
3.AcceptanceandStorage
3.1InspectionofMerchandiseReceived
3.2OOBAAcceptanceforAccessories
3.3AcceptanceStorage
3.4InsulatingOilManagement
4.InstallationandInspectionofTransformer
4.1PreparationforTransformerInspection
4.2ConditionsandPrecautionsforTransformerInspection
4.3ScopeofTransformerInspection
4.4TestofTransformerInspection
5.IntegralCompoundedInstallationandVacuumOilFilling
5.1PreparationforInstallation
5.2InstallationProgramFlow
5.3VacuumandVacuumOilFilling
5.4ReplenishmentandStanding
5.5VacuumOilFillingofTransformerwithoutInspection
5.6InstallationofOtherComponents
6.Pre-testInspectionandAcceptanceTrial
6.1Pre-testInspection
6.2AcceptanceTrial
7.InspectionBeforeLaunchandUnload-energization
7.1InspectionBeforeOperation
7.2UnloadTest
7.3Unload-energization
8.OperationandMaintenance
8.1Operation
8.2Maintenance
8.3TransformerFailureAnalysisandClearance
Ⅰ.Introduction
1.1ScopeofApplication
1.1.1Thisspecificationisadocumentoftechnologicalguidanceininstallationandapplication,onlyapplicableforoil-immersedtransformerof110kV(includingoff-circuittapchangingtransformer,onloadtapchangingtransformer,autocouplingtransformer,andcommutatortransformer).
1.1.2ScopeofApplication:
Requirementsoftransformertransportingbyrailway,roadandship;precautionsforfieldacceptanceandstorage;fieldoperationflowandacceptancetrial;conditionsforlaunchanddailymaintenance;failureidentification,etc.
1.1.3Applicationofthisspecificationshouldbeintegratedwithspecificstructureoftransformerforproperconstructionaccordingtorelevanttermsoftechnologicalrequirementsinthespecification.Foranyquestion,pleasecontactwiththemanufacturerforappropriatedisposal.
1.2ProductTypeSpecification
1.2.1TypeSpecificationforOil-immersedPowerTransformer
SFSZ□-□/□
VoltageClass(kV)
NominalCapacity(kVA)
CodeofPerformanceLevel
VoltageRegulationMode:
“Yes”meansonloadtapchanging,“No”meansoff-circuittapchanging
WindingNo.:
“Yes”meansthreewindings,“No”meanstwowindings.
Coolingsystem:
“Yes”meansaircooling,“No”meansselfcooling.
Three-phasetransformer
1.2.2TypeSpecificationforImmersed-typehigh-temperature-resistancepowertransformer
SFSRNZ-□/□
VoltageClass(kV)
NominalCapacity(kVA)
VoltageRegulationMode:
“Yes”meansonloadtapchanging,“No”meansoff-circuittapchanging
Hightemperatureresistance
Insulating(cooling)mediumisfire-resistantfluid
WindingNo.:
“Yes”meansthreewindings,“No”meanstwowindings.
Coolingsystem:
“Yes”meansaircooling,“No”meansselfcooling.
Three-phasetransformer
1.3TransformerStructure
1.3.1Core
Thecoreiswhollymadeofhighpermeabilitygrain-orientedcold-reducedsiliconsheetsteel,automaticallyassembledbyE-shapefullyautomatedcardstackerimportedfromSwitzerland.Theburratshearededgeisnolongerthan0.02mm.Appropriateset-upcolligationisusedfororientationofcorelegsoastoincreasemechanicalintensityanddecreaseopencircuitlossesandnoises.
1.3.2Coil
High-voltagecoilisformedbyinterleavedcontinuouswindingforsmallcapacityandinner-screencontinuouswindingforlargecapacityinordertoimprovethevoltagepropertyunderimpulsevoltageandreachevenvoltagedistribution.Thestayandbracketareallplanedroundedgestoimproveinsulationreliability.Twistdirectedforcedoilstructureisdesignedinsidetransformerwindingsothateachpartcanbefullycooledtodecreasethetemperatureriseofwindinganditsthermalpointandprolongtheinsulationlife.Highandmediumvoltageregulatorisequippedwithindividualregulatingwingdingsothateachwindinghasbalancedampere-turn,andconsequentlytodecreasetheaxialelectromotionatshortcircuitoftransformerandimproveitscapabilitytoresistsuddenshortcircuit.Thewindingradialisdesignedin“0”margin,keepingdryandclosefittingbetweencoreandlow-voltagewindingcylinder,stayandboardingset,andamonglow-voltage,high-voltageandregulatingwindingsothattheentirewindinghasgreattightnessandconcentricity.
1.3.3SubjectInsulation
Thewindinginsulators,suchasstay,bracket,andallhigh-voltageelectrodeandmetalstructuralcomponents,areplanedroundanglesinordertoavoidpointdischarge;thewindingshouldundergoasecondvacuumdryingaftercompletionofassembly,andthebodyshallhaveanotherkerosenegasdrying,inwhichwaythemoisturecontentisgreatlyreducedfrominsulatorsandthebodybecomesmorecleaner.Partialdischargeofproductisreducedthroughthetechnicsmentionedabove.
1.3.4Lead
Inrespectofhighvoltagelead,high-qualitytappingswitchisusedforon-loadtapchanging,andtheleadisconnectedbycoldpresswithshieldingprocessforroundangle;foroffcircuittapchanging,single-phaseoffcircuittapchangerisused.
1.3.5OilContainer
Thetransformerisequippedwithabelltypetankanddetachablefinnedradiator.
Ⅱ.TransportingandHoisting
2.1RequirementforTransporting
2.1.1Transformertransportedwithoilfillingshouldbefilledwithqualifiedtransformerinsulatingoilwiththeheightof150mmbelowthecontainertop,anddetachtheradiator,conservator,moistureabsorber,temperaturecontrollerandhighandlowvoltagecasingpipeandfanof10000kVAandabove,andmakeseparatedcasingtransportation,takingenoughadditionalinsulatingoilalongwithsubjecttransportation.
2.1.2Transformertransportedwithnitrogenfillshallbefilledwithnitrogengaswith99%purityandadewpointnohigherthan-30℃.Besides,installanitrogen-fillingequipmentandsteamgageontopoftheoilcontainer,andkeepthepositivepressureinsidecontainerof1.96~2.94×104pa.
2.1.3Transportationloadingshouldbecarriedaccordingtotherulesofrelevanttransportationdepartment.
2.1.4Duringtransportation,theimpactrecordinginstrumentshouldbeinstalledonthewallorcoverofoilcontainer.Themeasuringrangeisbetween±1and±5g(gistheunitforaccelerationofgravity),andtherecordingsensibilityis1.5~2mm/gwith500-3000timesofrecording.
2.1.5Transportationwithonloadtapchangermusthaveoilfillingintheheightofatleast150mmlowerthanthecontainertop.
2.2SubjectTransporting
2.2.1Duringthewholeprocessoftransportation(despiteofbyrailway,roadorship),thesubjectobliquityofnomorethan15°indirectionoflongaxisandnomorethan10°indirectionofshortaxis.
2.2.2Humpingimpactisprohibited.Accelerationofgravityfortransportation:
Nomorethan0.5gforaxialacceleration,andnomorethan0.3gforlateralacceleration.
2.2.3Lessthan15km/honfirst-classroad,andlessthan10km/honsecond-classroad.
2.3SubjectHoisting
2.3.1Thehoistingequipments,toolsandgroundworkofloadingsiteshouldbecapableofbearthehoistingweight(transportingweight)oftransformer.
2.3.2Theangleofhoistingslingshouldbemorethan30°.
2.4SubjectPullingandLifting
2.4.1Theworkingpointofsubjectpullingshouldbehangingontheappropriatedrawplateholeofbottompartoftank,notallowedtohangonsuchcomponentsincapabletobearweightastubeconnector.
2.4.2Thepullingspeedofdollyorrollaroundsonthetrackshouldbenomorethan100m/h.
2.4.3Forsubjectloadingonslope,theslopeangleshouldbelessthan10°andthelengthmorethan10maswellaswithskidproofdevice.
2.4.4Whenusingascrewjack,itshouldbeplaceunderthehoistingbracket.Whenliftingandlanding,itshouldkeepworkinginphasewiththesamespeed,preventingthejackfromskidding.
Ⅲ.AcceptanceandStorage
3.1InspectionofMerchandiseReceived
3.1.1Checkandacceptaccordingtopurchaseordertheproducts,nameplates,accessoriesandspareparts.
3.1.2Inspectthesubjectandaccessoriesforanyshiftingorimpactandmakedetailedrecords.Foranyproblem,contactwiththemanufacturerandtransportationdepartmenttofindoutreasonsandmakeproperdisposal.
3.1.3Checkthetransformertransportedwithfillingforoilpenetrationorleakageaswellastheoilheadandmakerecords.
3.1.4Checkthetransformertransportedwithnitrogenfillwhetherthenitrogengasiskeptinpositivepressureandmakerecords.
3.1.5Checktheaccessorypackingcontainerforanydamagesorlosses.Ifanyproblemisdiscovered,contactwiththemanufacturerandverifythedamagesandlossesforproperdisposal.
3.1.6Checkwhetherthenumberofcontainerarrivaltallieswiththatonthepackinglist,andforanymissdeliveryorwrongdelivery.Foranyproblems,contactwiththemanufacturerforproperdisposal.
3.2OOBAAcceptanceforAccessories
3.2.1Withrespecttothetransformerwithacapacityofover90000kVA,itisnecessarytocontactinadvancewiththemanufacturerandinformthetimeforOOBAsoastooperatetogetherwiththemanufacturer.
3.2.2Checkthecomponents,accessoriesandpartsinthecontaineraccordingtothepackinglistofeachsmallcontainer.Anydamagesormisspackingshouldberecorded.
3.2.3Checkforcompletefactorydocument,technologicalmaterialandcertificateofcompetency.
3.3AcceptanceStorage
3.3.1IfnomissdeliveryisfoundafterOOBA,makedetailedrecordsandsignin.
3.3.2Thecomponents,accessoriesandpartsinOOBAshouldbestoredaccordingtotheirpropertycharacter.Measures