翻译好PE07 升压站及厂用电受电移动变升压站启备变6kV.docx

翻译好PE07 升压站及厂用电受电移动变升压站启备变6kV.docx

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翻译好PE07升压站及厂用电受电移动变升压站启备变6kV

IndonesiaT.J.AWARAWAR2×350MWPowerPlantProject

CommissioningProcedureof

150kVSwitchyardandAuxiliaryPowerSectionEnergizing

150KV升压站及厂用电部分送电调试程序

No.:

P-E07

CUSTOMER

PT.PLN（PERSERO）

PT.PLNJASASERTIFIKASI

EPCCONTRACTORSCPJO

NEPRI

NortheastElectricPowerResearchInstituteCo.,Ltd

（LiaoningDongkeElectricpowerCo.,Ltd）

Rev.

Description

Prepared

Checked

Approved

Date

1

2

3

4

5

CompilationBasisoftheGuidance

1.IndonesiaT.J.AWARAWAR2×350MWpowerplantprojectcommissioncontract

2.DesigndiagramsofChinaUnitedEngineeringCorporation

3.Thedesignspecifications,operationandmaintenanceinstruction,assemblemanualandcorrelationdiagrampapermaterialofrelevantmanufactories

4.Contractgivenbyproprietorandminuteofrelevantmeeting

编制依据

1.印尼TanjungAWAR发电站2×350MW机组工程调试合同

2.中国联合工程公司设计图纸

3.各设备厂家的设计说明、运行维护手册、装配手册以及相厂家的关图纸文件资料。

4.业主提供的合同及相关会议纪要

Catalogue

NEPRI1

1.General1

2.Objective2

3.Energizingrange2

4.Precondition3

5.Energizingofmobiletransformer5

6.Energizingof150kVswitchyard5

7.EnergizingofSST5

8.Energizingof6kVcommonsection6

9.Energizingof6kVworkingsection6

10.Safetymeasure7

11.Systemdiagram13

1.General

2×350MWcoal-firedgeneratingunitsshallbeinstalledinT.J.AWARAWARpowerplant,whichisprovidedwith150kVdistributionequipment.FourcircuitsareledoutfromsuchequipmentandthenconnectedwiththeIndonesia150kVsystem.A3/2CBwiringmodeisusedfor150kVdistributionequipment.Twogeneratingunitsaresteppedupviaamaintransformerandthenswitchedin150kVbusbar.Theentirepowerplantisprovidedwithonestartup/backuptransformerasthestartupandbackuppowersupplyfortheunitsofthepowerplant,whichisconnectedviathebusbarof150kVdistributionequipment.

150kVdistributionequipmentisarrangedoutdoorsinamiddle-sizedform,whileCBsareduallyarrayed.Eachstringofincomingandoutgoinglinecircuitoccupies2intervals.ThemaintransformerandtheoutgoinglinesetinCircuit1formonecompletestring,andthenthestringisarrangedintwointervals;theincominglineofthestartup/standbytransformerandtheoutgoinglinesetinCircuit1formonecompletestring,andthenthestringisarrangedintwointervals;themaintransformerinCircuit1andtheurbansupplytransformeroutgoinglineaswellastransformersarearrangedintheintervalofacompletestringandoccupiestwointervals.Bothendsofthebusbarareprovidedwithabusbarearthingswitch.

Two350MWturbogeneratorunitsareswitchedin150kVdistributionequipmentinaconnectionunitformofgenerator-transformerbank.Theoutgoingendofthegeneratorandtheoutgoingbushingattheendofaneutralpointareequippedwithfourgroupsofcurrenttransformers;theoutgoingendofthegeneratorisequippedwiththreegroupsofpotentialtransformersandonegroupofsurgearresters;theneutralpointofthegeneratorisearthedviathesecondaryresistanceofasinglephaseearthingtransformer.Thegeneratorandthemaintransformerareconnectedbyusingcontinuousenclosure-typeisolatedphasebusbar.Ahighvoltagestationtransformerandanexcitationtransformerareconnectedfrombetweenthegeneratorandthelowvoltagesideofthemaintransformer.Astaticself-shuntsystemisusedfortheexcitationofthegenerator.

Twovoltagelevelsof6.3kVand400/230Vareusedinthestation-servicepowersystem.Theratedvoltageofamediumvoltageelectricmotoris6kV,andtheratedvoltageofalowvoltageelectricmotoris380V/220.2×350MWcoal-firedgeneratingunitsareinstalledinT.J.AWARAWARpowerplant.Accordingtotheloadstatisticsofelectricalequipmentinallprocesssystemsofthepowerplant,eachgeneratingunitisprovidedwithonehighvoltagestationtransformer,whichisusedtosupplypowerforelectricalequipmentfortheunitplant.Thepowersupplyatthehighvoltagesideofthehighvoltagestationtransformerareconnectedthroughabranchfromanenclosedbusbarbetweenthegeneratorofthegeneratingunitandthemaintransformer,whilethepowersupplyatthelowvoltagesideareconnectedwith6kVswitchgearofthegeneratingunitbyusingcommonenclosurebusbar.Themainbuildingisprovidedwith6kVcommonbusbarsection.Boththepowerforthecommonsystemofthepowerplantandtheproductionauxiliarysystemaresuppliedby6kVcommonsection.Thepowersupplyforthe6kVcommonsectionisconnectedviaastartup/backuptransformer,whoselowvoltagesideisconnectedwiththeswitchgearforthe6kVcommonsectionbyusingcommonenclosurebusbar.

Maintechnicalparametersareasfollows:

Start-up/Standbytransformer

Model：

SFFZ-50000/150

No-loadloss:

40kW

Ratedvoltageratio：

1508×1.25%/6.3kV

Loadloss:

211.5kW

Ratedpower：

50/31.5-31.5MVA

No-loadcurrent:

0.1%

Ratedfrequency：

50Hz

Soundlevel:

75dB

Numberofphases:

Threephases

Partialdischarge:

100pC

Voltageregulationmode:

OLTC

Earthingmodeofneutral:

Directly（H.V.）/Resistanceneutralgrounding（L.V.）

Connectionsymbol：

YN，yn0-yn0+d11

Coolingtype:

ONAN/ONAF

Impedancevoltage：

21%

2.Objective

2.1Checktheoperationperformanceofrelevantprimaryequipmentsunderratedvoltage.

2.2Checktherelevantprotection,measurement,controlandsignalloop.

2.3Supplypowertoauxiliarypowersectionforunitcommissioning.

3.Energizingrange

Thepowerenergizingrangeoftheproposalisasfollowed（seethemainelectricalconnectiondiagram）.Thewhole150kVswitchyardshouldbeenergizedbythemobiletransformer,andthenthepowerwouldbesentto6kVcommonsections,6kVworkingsectionsthroughthestartup/standbytransformer.Theenergizingequipmentsareasfollows:

a）Mobiletransformer

b）150kVswitchyard:

busbar,CB,DS,CT,PT,arrester

c）SST

d）6kVcommonsectionAandB

e）6kVworkingsection1Aand1B

Ifnecessary,adjustmentshouldbemadefortheenergizingproposalaccordingtothepracticalsituation.

4.Precondition

4.1Theinstallationandcommissioningofthesubstationprimaryequipmentintheenergizingrangeshouldbefinished.Theinspectionandacceptanceisqualified,andtheacceptancereportsarecomplete.

4.2Theinstallationandcommissioningofthestartup/standbytransformershouldbefinishedandtherelevanttestshouldbefinished.Alltheinspectionandacceptanceisqualified,andtheacceptancereportsarecomplete.

4.3Theinstallationandcommissioningofthe6kVsectionprimaryequipmentintheenergizingrangeshouldbefinished.Theinspectionandacceptanceisqualified,andtheacceptancereportsarecomplete.

4.4Thecharacteristictest,withstandvoltagetestandinsulationtestofalltheelectricalequipmentsshouldbequalifiedaffirmed.

4.5Therelevantprotection,control,measurementandsignalloopshavebeencommissionedandconfirmedqualified.

4.6Confirmthaton-loadtapchanger,coolingsystemandtemperaturemeasuringdeviceofrelevanttransformersareallingoodcondition,andthetapofthetransformersshouldbeattheratedposition.

4.7ThecommissionoftheCBprotectionandthetransformerprotectionshouldbefinished,andthetrippingtestshouldbeallright.Theinspectionandacceptanceisqualified,andtheoperationconditionisready.

4.8ThesettingvaluesofCBprotection,thetransformerprotectionandtheauxiliarypowerprotectionareallrightaccordingtothesettingvaluespaper.

4.9TheoperationstateofmobiletransformerCBisallright.

4.10ThecommissioningoftheNCS,DCSsystemshouldbefinished,aswellasthefunctiontest.Theoperationconditionisready.

4.11Inthe150kVswitchyard,thecommunicationdevice,firefightingdevice,illuminationdeviceshouldbecomplete,andthesafetypassagewayshouldbesmooth.

4.12Thefencingandwarningmarksinthe150kVsubstation,the6kVswitchgearroomandthetransformerareashouldbecomplete.

4.13Thefencing,ground,andilluminationoftransformersiteshouldbeallright.Andtheearthingoftransformerbodyisnoproblem.

4.14Duringtheenergizingtest,operatorsshouldbesentto150kVsubstation,the6kVswitchgearroomandthetransformersite.Monitortheoperationstationoftheequipment,andthecommunicationdeviceshouldbenoproblem.

4.15Fireproofingblockingforallthecablecabinetsshouldbefinished,andtheremustbeenoughfire-fightingequipment.

4.16Forthefirsttimeofthetransformerenergizingtest,putthefirefightingsystemintooperation.Ifthefirefightingsystemisnotready,afiretruckshouldbereadynearthetransformer.

4.17Thereshouldbeenoughfireextinguishersespeciallyforelectricaluseinthetransformerareaandtheswitchroom.

4.18Thephasesequenceofelectricalprimaryequipmentsshouldbeallright.

4.19TheDCpowersystemandUPSsystemshouldberunningnormally.

4.20Allthetestinstrumentsshouldbeready.

4.21ThesecondaryloopofCTandPTshouldbechecked.

4.22Themeteringsystemofrelevantequipmentshouldbequalified.

4.23Thegroundconnectionofelectricaldeviceshouldbeallright,andthegroundresistanceshouldbequalified.

4.24Thenamesandthenumbersoftheelectricalequipmentshouldbeclear.

4.25Thecommunicationdevice,firefightingdevice,illuminationdeviceshouldbecomplete,andthesafetypassagewayshouldbesmooth.

4.26The6kVcommonbusbartoUnit2shouldbedismantled,andtheremustbeenoughsafetymeasuresforisolationandinsulation.

4.27Theh.v.sideconnectionof#1,#2maintransformershouldbedismantled,andtheremustbeenoughsafetymeasuresforisolationandinsulation.

4.28Befor