Fais fab Transformer Installation and Operation Guide

 

 

 

 

Cov lus qhia no ua haujlwm raws li cov ntaub ntawv qhia dav dav rau kev thauj mus los, kev teeb tsa, kev lees paub, thiab pib ua haujlwm ntawm cov roj-immersed power transformers. Nws npog tag nrho lub neej voj voog los ntawm lub Hoobkas xa mus rau kev ua haujlwm tiav, suav nrog ob lub chaw tsim khoom- cov kev cai tshwj xeeb thiab cov qauv kev lag luam. Cov ntaub ntawv no yog npaj rau cov neeg cog lus installation, commissioning engineers, thiab cov neeg ua haujlwm substation koom nrog hauv cov phiaj xwm fais fab.

Cov qauv siv tau:

• GB 50148-2010: Txoj Cai rau Kev Tsim Kho thiab Kev Txais Lub Hwj Chim Hloov Pauv, Roj-immersed Reactors, thiab Instrument Transformers
• GB 50150-2016: Tus Qauv rau Kev Ntsuas Cov Khoom Siv Hluav Taws Xob
• DL/T 572-95: Fais fab Transformer Operation Code
• GB 26860-2011: Txoj Cai Kev Nyab Xeeb rau Kev Lag Luam Hluav Taws Xob-Ib feem ntawm cov chaw tsim hluav taws xob thiab cov chaw nres tsheb
• GB/T 6451-2015: Technical Parameters and Requirements for Oil-immersed Power Transformers

Rau cov transformers ntawm 110kV thiab siab dua, cov chaw tsim khoom lub Hoobkas kuaj cov ntaub ntawv, cov lus qhia ua haujlwm, thiab lwm yam ntaub ntawv kev kawm yuav tsum tau tshuaj xyuas thiab khaws cia ua ib feem ntawm qhov project archive.

 

 

 

 

 

2.1 Lifting Requirements

Thaum nqa lub cev tseem ceeb, tag nrho cov nqa nqa ntawm lub tank yuav tsum tau nqa synchronously. Lub kaum sab xis ntawm txhua txoj hlua lifting thiab lub perpendicular yuav tsum tsawg dua los yog sib npaug li 30 degree. Cov khoom lag luam qhov nruab nrab ntawm lub ntiajteb txawj nqus yuav tsum ua raws li lub tsheb thauj khoom nruab nrab kom muaj kev ruaj ntseg thaum caij tsheb thauj mus los.

2.2 Txoj Kev Thauj Mus Los

Pawg neeg tsim kho yuav tsum xyuas kom meej tias txoj kev los ntawm txoj kev pej xeem mus rau qhov chaw teeb tsa yog tsim nyog rau kev thauj mus los ntawm transformer. Cov xwm txheej hauv qab no yuav tsum tau ua raws li:

• Txoj kev ncaj ncaj: Ntau dua lossis sib npaug li 3.5m
• Curved txoj kev dav: Ntau dua lossis sib npaug li 18m
• Overhead kab clearance: Ntau tshaj los yog sib npaug rau 4.6m
• Txoj kev gradient: Tsawg dua lossis sib npaug li 15 degree
• Txoj kev saum npoo yuav tsum tiaj tus uas tsis muaj txoj kab ncaj nraim
• Txoj kev yuav tsum muaj peev xwm nqa tau tag nrho kev thauj mus los hnyav.

2.3 Inclining txwv thiab ceev

Thaum lub sij hawm kev thauj mus los los yog kev tuav tuav, lub inclination lub kaum sab xis ntawm lub ntsug axis Less tshaj los yog sib npaug zos rau 15 degree, thiab kab rov tav axis Less tshaj los yog sib npaug zos rau 10 degree. Kev ceev tuav ceev Tsawg dua los yog sib npaug li 5m / min, thiab rail rub ceev Tsawg dua los yog sib npaug li 5m / min. Cov khoom siv braking yuav tsum tau muab tshem tawm ua ntej rub lub transformer ntawm txoj hlua, nrog lub log kom lubricated txaus.

2.4 Nitrogen-Pilled vs. Roj-Pilled Transport

Nitrogen{0}} thauj khoom:Nitrogen dew-cov ntsiab lus < -40℃, nitrogen purity Ntau dua lossis sib npaug li 99.9%, sab hauv lub tank siab Ntau dua lossis sib npaug li 30kPa. Thaum lub sij hawm thauj mus los, lub tank siab yuav tsum nyob twj ywm zoo thiab tswj tau siab tshaj 10kPa ntawm qhov kub thiab txias; yuav tsum tau ntxiv cov roj uas tsim nyog yog tias lub siab poob.

Roj- puv thauj:Sau nrog cov roj tsim nyog ntawm tib hom raws li tau teev tseg hauv daim duab kos duab, khaws cov roj kab kwv yees li 100 hli hauv qab lub tank saum. Tag nrho cov li qub yuav tsum tau muab kaw nrog daim phiaj dig muag; roj to yog nruj me ntsis txwv tsis pub.

2.5 Impact Recorder Requirements

Rau cov transformers nruab nrog cov ntaub ntawv cuam tshuam, qhov acceleration g tus nqi yuav tsum tau sau tseg: tus nqi ntsug loj tshaj plaws yuav tsum tsis pub tshaj 4g, thiab lwm cov lus qhia yuav tsum tsis pub tshaj 3g. Cov ntawv sau cia yuav tsum khaws cia rau hauv tus neeg siv cov ntaub ntawv tom qab kos npe thiab txheeb xyuas los ntawm ob tog.

 

 

 

 

 

 

3.1 Kev Npaj Qhov Chaw

Ua ntej lub tsheb thauj mus txog qhov chaw platform, lub peev xwm ntawm cov av yuav tsum tau soj ntsuam. Cov kev ntsuas cuam tshuam yuav tsum tau txais kev pom zoo los tiv thaiv kev tilting ntau dhau thaum thauj khoom.

3.2 Lifting rau Unloading

Kev nqa hlua yuav tsum tau khi rau lub lifting lugs rau tag nrho lub cev; tying rau tank lugs yog nruj me ntsis txwv tsis pub. Yog hais tias lub kaum sab xis lifting tshaj 30 degree, yuav tsum tau siv lub lifting beam kom muaj kev ruaj ntseg. Yog tias unloading los ntawm kev tuav tuav, siv jack daim hlau ntawm lub tank, xyuas kom txhua lub jack hauv qab tau txais lub zog sib npaug, ces nqa synchronously.

3.3 Positioning

Kab rov tav txav ceev ntawm lub cev tseem ceeb yuav tsum tau tswj nruj me ntsis, nrog rau txhua qhov droop qhov siab tsawg dua lossis sib npaug li 30mm. Muaj 1.5% gradient yuav tsum tau rau sab saum toj txuas cov yeeb nkab ntawm transformer; tsis muaj shimming yog xav tau nyob rau sab conservator thaum positioning.

Rau lub log-kho cov transformers, xyuas kom meej tias cov ntsia hlau qhov sib haum nrog lub qhov ntawm cov phaj ruaj hauv qab lub tank. Tshawb xyuas lub log sib nrug tiv thaiv kev tsheb ciav hlau ua ntej kev teeb tsa, tom qab ntawd ua kom tiav cov khoom siv braking.

 

 

 

 

 

 

4.1 Kev tshuaj xyuas lub cev thiab cov khoom siv tseem ceeb

Thaum tuaj txog, lub tuam txhab kev teeb tsa thiab cov neeg siv yuav tsum tshuaj xyuas lub cev thiab cov khoom siv tam sim ntawd rau:

• Specification pov thawj:Tshawb xyuas daim ntawv teev npe tshwj xeeb, hom, thiab kom muaj nuj nqis tiv thaiv kev yuav khoom.
• Lub cev mob:Tshawb xyuas qhov kev puas tsuaj, deformation, tawg, lossis hloov chaw ntawm lub tsheb thiab lub tshuab hloov pauv.
• Accessory Quantity:Txheeb xyuas cov pob khoom thiab cov khoom siv tiv thaiv cov ntawv hloov pauv thiab cov ntawv ntim khoom, suav nrog cov ntsuas kub, cov bushings, thiab lwm yam khoom.
• Cov khoom seem:Tshawb xyuas cov khoom seem thiab cov khoom siv ntxiv raws li daim ntawv cog lus yuav tsum tau ua.

Txhua qhov kev puas tsuaj lossis qhov txawv txav yuav tsum tau sau tseg kom ntxaws nrog rau ntawm -cov duab duab. Muab cov duab, cov npe tsis raug, thiab cov ntaub ntawv luam tawm mus rau cov chaw tsim khoom thiab lub tuam txhab tsheb thauj mus los kom sai rau kev tsom xam thiab kev daws teeb meem raws sijhawm.

4.2 Rwb thaiv tsev roj txais

Kev tshuaj xyuas cov roj rwb thaiv tsev thaum tuaj txog los xyuas cov khoom txawv teb chaws sib xyaw. Cov txiaj ntsig kev xeem yuav tsum ua raws li:

• Kev tawg hluav taws xob: Ntau dua lossis sib npaug rau 40kV / 2.5mm
• Cov ntsiab lus dej: Tsawg dua lossis sib npaug li 20ppm

Cov roj sib txawv ntawm cov roj hloov pauv yuav tsum muab khaws cia thiab khaws cia nyias.

 

 

 

 

 

 

 

5.1 Nitrogen-Sau khoom cia

Rau nitrogen-cov khoom ntim, xyuas tam sim ntawd tias nitrogen siab ua tau raws li qhov yuav tsum tau ua (Ntau dua lossis sib npaug rau 10kPa ntawm qhov kub thiab txias). Yog tias khaws cia dhau 15 hnub, cov roj filling yuav tsum tau ua. Cov roj seem ntawm lub hauv paus tank yuav tsum ua kom tau raws li qhov hluav taws xob tawg ntau dua lossis sib npaug ntawm 40kV / 2.5mm thiab cov ntsiab lus dej tsawg dua lossis sib npaug li 20ppm.

Thaum lub sij hawm nitrogen- puv cia, kev tshuaj xyuas yuav tsum tau ua tsawg kawg ob zaug ib hnub twg, nrog rau cov ntaub ntawv ntawm lub tank siab thiab ntxiv nitrogen. Yog tias lub siab poob qis sai, xyuas kom pom cov dej ntws tawm thiab hais kom sai kom tsis txhob muaj dej nkag mus.

5.2 Roj-Sau khoom cia

Rau roj- cov khoom ntim, coj cov qauv roj thaum tuaj txog thiab kuaj. Kev ua tau zoo yuav tsum ua tau raws li: tawg voltage Ntau dua lossis sib npaug rau 40kV / 2.5mm. Yog tias cov qauv roj ua tsis tiav, txiav txim siab seb cov av noo puas tau nkag mus thiab hu rau cov chaw tsim khoom.

5.3 Cov khoom siv cia

• Tshem tawm qhov chaw (conservator, radiator, cooler):Tiv thaiv los nag, plua plav, thiab fouling. Cov chaw cia khoom yuav tsum muaj zog thiab kwv yees li 100 hli saum toj ib puag ncig; hauv qab yuav tsum tau siab txog 200mm kom tsis txhob xeb.
• Bushings thiab accessories (ntsuas ntsuas, relays, davhlau ya nyob twg lub thawv, tswj txee, ntawm -load tap changer mechanisms, cables, seals, etc.):Khaws nyob rau hauv qhuav, ventilated chav.

5.4 Kev txiav txim siab dampness

Lub transformer raug suav hais tias tsis ntub yog tias cov xwm txheej hauv qab no tau ntsib (kuaj tom qab oiling):

• Rwb thaiv tsev tus nqi Ntau dua lossis sib npaug li 70% ntawm cov ntaub ntawv hauv lub Hoobkas
• Core-rau- av rwb thaiv tsev tsis kam ≠0
• Cov ntsiab lus noo noo hauv nitrogen Tsawg dua lossis sib npaug li 100ppm
• Cov dej noo hauv cov roj tsawg dua lossis sib npaug li 20ppm

Yog tias cov kev cai no tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, lub transformer yuav tsum tsis raug ntsia lossis ua haujlwm. Hu rau cov chaw tsim khoom rau kev taw qhia.

 

 

 

 

 

 

 

6.1 Ua ntej-Kev kuaj xyuas kev teeb tsa

• Xyuas kom tseeb tias cov khoom siv tau ua tiav thiab zoo. Kev sim ua ntej- kev teeb tsa suav nrog: dielectric dissipation yam ntawm cov roj- ntawv condenser bushings, polarity thiab piv ntawm bushing tam sim no transformers, roj relay tshuaj xyuas thiab hloov kho, thiab ntsuas kub tswj thiab hloov kho.
• Npaj cov roj filling, ntws, thiab lim cov cuab yeej. Tshawb xyuas kom muaj nuj nqis txaus thiab qhov zoo ntawm cov roj transformer.
• Npaj cov khoom siv: lub tshuab nqus tsev lim (roj tshuab), roj tank, roj raj, crane, thiab lwm yam cuab yeej.

6.2 Cov khoom siv thiab cov cuab yeej xav tau

S/N	Khoom npe	Specification & Nqe lus piav qhia
1	Cov khoom siv roj xeem	Roj withstand voltage, dej ntsiab lus, tgδ, thiab lwm yam.
2	Lifting khoom (nrog rau cov hlua)	Peev xwm ib tug general assembly drawing
3	Lub tshuab nqus tsev roj lim (roj tshuab)	Rau filling transformer roj
4	Pipeline thiab tube unions	Cov pob qij txha / flanges kom phim qhov ntau thiab tsawg ntawm ib daim duab
5	Roj cia tank	Kwv yees li 1.1 × transformer roj loj
6	Cov ntaiv	25m3 ib
7	Nylon hlua	Rau lifting bushings, radiators, conservator
8	Lifting lugs	Rau radiators, conservator, thiab lwm yam.
9	Cov cuab yeej siv dav dav	Bolts, screws, thiab tes cuab yeej
10	Megameter (2500V)	Rau kev ntsuas rwb thaiv tsev
11	Teeb pom kev zoo	Rau kev tshuaj xyuas lub tank sab hauv
12	Dej- ntaub ntawv pov thawj	Kev tiv thaiv huab cua
13	Cov tshuaj tua hluav taws	Rau kev nyab xeeb hluav taws

6.3 Environmental Requirements for Core Lifting Inspection

• Cov av noo<65%: exposure time of active parts ≤16h
• Humidity 65% ​​-75%: Lub sij hawm raug ntawm cov khoom nquag Tsawg dua los yog sib npaug rau 12h
• Ambient kub siab dua los yog sib npaug li 5 degree; Lub cev kub yuav tsum yog 5-10℃saum toj no ambient
• Yog ambient kub<0°C, raise active parts temperature above 10°C by hot oil circulation in advance
• Cov av noo ntau dua lossis sib npaug li 75%: kev tshuaj xyuas cov tub ntxhais nqa los yog cov kua nitrogen yuav tsum tsis txhob ua

 

 

 

 

 

 

 

7.1 Kev npaj rau npog Lifting

Yog tias daim ntawv cog lus tsis tas yuav nqa lub tank npog, qhov haujlwm no yuav tsum tsis ua. Txawm li cas los xij, yog tias lub tshuab hluav taws xob tau ntsib kev cuam tshuam los yog qhov xwm txheej tsis tau xav txog thaum lub sijhawm thauj mus los, kev tshuaj xyuas qhov tseem ceeb yuav tsum tau ua tsis hais txog.

Ua ntej ua lifting tank npog tshuaj xyuas:

• Ua kom tiav tag nrho cov txheej txheem ua haujlwm thiab cov kev xav tau raws li cov txheej txheem npaj
• Loosen los yog tshem tawm cov khoom sib txuas ntawm lub cev thiab cov roj tank
• Disassemble ntawm -load tap changer raws li nws phau ntawv qhia

7.2 Lifting txheej txheem

Disassemble sib koom bolts ntawm cov roj tank ntug. Raws li kev kos duab sib dhos, xaiv cov hlua uas tsim nyog los dai rau hauv chav clamping ntawm lub lifting lug. Ua ib ntus mus sib hais lifting los kho txoj hauj lwm nuv kom qhov chaw ntawm lub ntiajteb txawj nqus aligns nrog tib txoj kab ntsug. Tom qab kev sim ua tiav, nqa lub tank roj thiab muab tso rau ntawm kev txhawb nqa huv.

7.3 Internal Inspection Checklist

• Zuag qhia tag nrho cov mob:Txawm hais tias lub cev muaj kev hloov pauv lossis hloov pauv loj heev
• Sab saum toj pad ntawm winding:Tshawb xyuas txhua qhov kev txav
• Cov kab hluav taws xob:Tshawb xyuas qhov qhib welds lossis tawg; txheeb xyuas cov hlau lead hlau rwb thaiv tsev nyob hauv qhov zoo
• Nias bolts thiab screws:Xyuas seb puas muaj qhov loosening
• Standard fasteners:Xyuas seb puas muaj qhov loosening
• Roj tank thiab lub cev sab hauv:Tsis muaj teeb meem lossis dej tso cai
• Coj mus rhaub changer contact:Tshawb xyuas kev sib cuag nrog cov xov hlau txuas; xyuas kom nruj nruj
• Core grounding:Xyuas kom tseeb tias cov tub ntxhais yog grounded ntawm ib qho chaw thiab rwb thaiv tsev yog nyob rau hauv zoo

7.4 Kev Tswj Xyuas Cov Cuab Yeej Thaum Tshawb Xyuas Sab Hauv

Tag nrho cov cuab yeej siv los ntawm cov neeg soj ntsuam yuav tsum tau sau npe ID. Cov neeg ua haujlwm hnab ris tsis pub muaj cov khoom siv hlau. Cov plua plav thiab cov khib nyiab yog nruj me ntsis txwv tsis pub nkag mus rau hauv lub tank. Tom qab ua tiav, cov neeg ua haujlwm khiav haujlwm yuav tsum paub meej tias tsis muaj cov khib nyiab nyob hauv, thiab tag nrho cov cuab yeej yuav tsum raug tshuaj xyuas rau kev sau npe.

7.5 Tank Reassembly

Ntxuav cov roj seem ntawm lub tank hauv qab thiab xyuas kom tsis muaj cov cuab yeej lossis cov khib nyiab nyob. Txheeb xyuas tias lub sealing gasket puas lawm thiab raug ntsia. Kev nqa cov roj tank yuav tsum ruaj khov; Kev txo qis yuav tsum maj mam kom tsis txhob muaj kev sib tsoo thiab lub cev hloov pauv. Thaum cov roj tank ze rau lub gasket, siv cov nplaum los coj cov ntsia hlau sib dhos. Tom qab kuaj xyuas qhov chaw tso gasket, ntxig tag nrho cov bolts thiab fasten diagonally hauv theem kom ua tiav txawm tias nruj.

 

 

 

 

 

 

8.1 General Installation Cov Cai

Suav tag nrho cov khoom yuav tsum tau nruab (xws li bolts, txiv ntseej, ntxhua khaub ncaws). Ua tib zoo tshuaj xyuas, ntxuav cov khoom siv, thiab tshem tawm cov teeb meem, av, thiab plua plav los ntawm cov raj sib txuas.

Cov khoom uas muaj cov cim kev teeb tsa (siab-voltage, nruab nrab-voltage, low-voltage bushings, pedestals, pressure release devices) yuav tsum ua raws li cov lus qhia rau reinstallation, xyuam xim rau txoj hauj lwm txheeb ze thiab lub kaum sab xis ntawm lub tank.

Rau 110kV thiab siab dua, cov hlau lead hlau rwb thaiv tsev inclined cov lus qhia yuav tsum tau ntim rau hauv qhov hluav taws xob- sib koom pob qhov ncauj ntawm bushing.

Thaum sib sau cov kav dej sib koom ua ke, pib los ntawm cov roj relay sab. Fasten bolts tsis tiav kom txog thaum tag nrho cov khoom sib sau ua ke, tom qab ntawd pib nruj ntawm cov roj relay sab.

Cov pas ntsuas kub pedestals yuav tsum tau ntim nrog 2/3 transformer roj.

Rau cov khoom siv nrog cov cua ntws ntsaws ntsaws (LV bushing, roj relays, roj conservator, radiators, thiab lwm yam), qhib lub sab sauv cua ntsaws ntsaws tom qab cov roj txhaj tshuaj kom tso pa tawm; tsis txhob kaw kom txog thaum roj puv.

Ua ntej muab sealing gaskets, khaws cov hlau kom huv si. Sealing nto yuav tsum yog roj- kaw nrog lub sealing gasket kom raug zaum. Fasten bolts diagonally nrog kev ntxhov siab.

8.2 Bushing installation

Cov ntsiab lus tseem ceeb:

• Crane qhov chaw yuav tsum pab txhawb nqa bushing thiab installation
• Siv cov hlua nylon lossis hlua hlua nrog lub tes tsho tiv thaiv; tiv thaiv kev sib tsoo nrog cov thawv ntim khoom lossis lwm yam khoom
• Xyuas cov roj to tom qab tshem tawm bushing ntawm lub thawv; txheeb xyuas cov roj qib hauv roj ntsuas yog qhov qub
• Ntxuav flange nto thiab sab hauv ntawm bushing pedestal nrog huv ntaub dawb ua ntej installation
• Bushing slant lub kaum sab xis yuav tsum phim lub pedestal slant lub kaum sab xis

Rau 110kV thiab saum toj no condenser bushing installation:

• Tshem tawm sab saum toj lub davhlau ya nyob twg thaiv thiab npog ua ntej nqa
• Tom qab bushing muab tso rau hauv lub mounting pedestal, soj ntsuam los ntawm lub tank phab ntsa qhov kom paub meej tias lub khob hliav qab ntawm txhuas hlau yog nias rau hauv voltage- sib koom pob
• Xyuas kom cov hlau lead hauv yog ncaj nraim tsis muaj twisting lossis khoov
• Tsis txhob tuag lifting thaum straightening hlau hlau tiv thaiv kev puas tsuaj los yog ntoo clip rub- tawm

8.3 Cov Cuab Yeej Cuab Yeej Kev Txhim Kho

Npauj npaim li qub yuav tsum nyob rau hauv lub xeev tawm thaum dismounting tsheb thauj mus los sealing daim hlau. Cov cua txias tau raug kuaj xyuas seb cov dej xau hauv siab thiab roj- ntxuav ua ntej ex- ua haujlwm. Qhib lub tsheb thauj mus los sealing phaj los xyuas qhov huv ntawm sab hauv; txiav txim siab seb puas xav tau roj ntxiv - ntxuav. Txhim kho lub txias txias raws li cov lej thiab cov cim kev teeb tsa. Thaum lifting, cia lub txias txias upright thiab txav mus rau hauv txoj hauj lwm, ces sib sau ua ke nrog tank txuas kav.

8.4 Kev Txhim Kho Kev Ruaj Ntseg Valve

Tshem tawm cov tsheb thauj mus los sealing daim hlau thiab lub qhov npog qhov npog. So cov phab ntsa sab hauv nrog daim ntaub dawb kom txog thaum tsis muaj smudge. Nruab rau ntawm flange; xav tau zoo sealing thiab txhim khu kev qha installation. Yog tias nruab nrog lub hau, lub qhov hluav taws xob roj yuav tsum tau coj mus rau hauv av qhib. Yog tias nruab nrog cov roj- coj cov yeeb nkab, nruab nws kom haum.

8.5 Gas Relay Installation

Cov tsos mob yog nyob rau hauv qhov zoo thiab kuaj cov teeb liab kev sib cuag thiab mus txawv tebchaws kev sib cuag rau kev ntseeg tau. Tshem tawm cov tsheb thauj mus los sealing daim hlau thiab tshem tawm cov flange. Tshem cov hlua khi hlua khi lub khob ntab thaum thauj. Nruab cov roj relay nruab nrab ntawm cov roj tank thiab roj conservator, ua raws li tus xub taw qhia ntawm lub cuab yeej ( xub taw tes rau roj conservator). Nruab cov kav dej rau tag nrho cov bushing pedestals kom tag nrho cov roj sab hauv sau rau hauv cov yeeb nkab txuas mus rau cov roj relay.

Nco tseg:Lub npog sab saum toj ntawm lub transformer yuav tsum muaj txoj kab nqes ntawm 1.0% -1.5% raws li cov roj relay ntws cov kev taw qhia kom yooj yim sau cov roj thiab lub tswb.

8.6 Conservator thiab Moisture Absorber (ua pa) Installation

Nqa conservator bracket thiab kho nws mus rau lub tank bearing nrog bolts. Nruab tus conservator ntawm lub bracket. Txuas cov kav dej thiab nruab cov roj relay ntawm npauj npaim valve hauv qab tus neeg saib xyuas. Nruab lub qhov hluav taws xob roj, roj inlet, thiab roj qhov hluav taws xob kav nrog nres li qub nyob rau hauv qab kawg. Nruab cov dej noo absorber txuas cov yeeb nkab, tom qab ntawd nruab lub tshuab nqus pa rau hauv qab kawg. Lub sealing gasket rau khaws cia thiab thauj yuav tsum tau muab tshem tawm. Sau cov roj sealing lub thawv nrog cov roj transformer kom cov roj theem immerses lub thaiv lub nplhaib.

8.7 Thermometer Installation

Tus pas ntsuas kub yog nyob rau ntawm cov roj tank npog ze ntawm lub conservator. Sau ib qho me me ntawm cov roj transformer rau hauv lub tuav ua ntej ntsuas kub. Screw tus pas ntsuas kub rau hauv tus tuav maj mam. Rau cov ntsuas ntsuas ntsuas kub, coil redundant conduits zoo li lub tais thiab kho rau lub tank phab ntsa.

8.8 Ntawm -Load Kais Changer Installation

Tom qab txhim kho cov roj tank, xyuas thiab ntxuav lub selector hloov roj chamber dua, tom qab ntawd nruab cov roj suction yeeb nkab. Nqa tus kais hloov pauv nrog lub phaj tshwj xeeb hanger, rov txuas lub nruab nrab flange thiab txhawb nqa flange, thiab xyuas kom zoo sealing. Ua tib zoo tso lub selector hloov mus rau hauv cov roj chamber, tig lub rwb thaiv tsev qag maj mam ua kom cov coupling thiab xyuas kom meej qhov chaw. Nruab qhov taw qhia txoj hauj lwm thiab xauv phaj, tom qab ntawd rov sib dhos lub taub hau npog lub rooj tsavxwm. Ua haujlwm zoo thiab thim rov qab los ntawm txhais tes los txheeb xyuas symmetry, tom qab ntawd los ntawm lub cev muaj zog. Txheeb xyuas txhua qhov kais dej kom paub tseeb tias tus kais taw qhia thiab lub cev muaj zog ntsuas qhov sib tw.

 

 

 

 

 

 

 

 

9.1 Cov Khoom Siv Roj Zoo

Cov roj hloov pauv yuav tsum tau ua kom zoo ntawm cov nroj tsuag kom txo qis ntawm -qhov chaw ua haujlwm refining. Rau qhov ntev - kev thauj mus los deb lossis ntev - lub sijhawm khaws cia, roj nruas yuav tsum siv. Ua ntej oiling, kev ntsuam xyuas roj yuav tsum tau ua. Rau kev txhaj tshuaj lub tshuab nqus tsev, cov roj yuav tsum ua raws li cov qauv hauv qab no:

Parameter	Kev xav tau
Breakdown voltage	Ntau tshaj lossis sib npaug li 70kV / 2.5mm
Cov ntsiab lus dej	Tsawg dua lossis sib npaug li 8mg / L
Cov ntsiab lus roj	Tsawg dua lossis sib npaug li 0.8% (los ntawm ntim)
Dielectric poob factor tanδ (90 degree)	Tsawg dua lossis sib npaug li 0.5%
Particle suav (5μm-100μm)	≤1000 particles/100mL; no particles >100μm

Nco tseg:Rau 330kV-750kV transformers, dej cov ntsiab lus yuav tsum tsis pub tshaj 10mg / L; rau 110 (66) kV, dej cov ntsiab lus yuav tsum tsis pub tshaj 20mg / L; rau 220kV, dej cov ntsiab lus yuav tsum tsis pub tshaj 15mg / L.

9.2 Nqus Filling txheej txheem

Ua ntej lub tshuab nqus tsev filling, tag nrho cov khoom siv hauv av thiab cov kav dej sib txuas yuav tsum muaj kev ntseeg siab hauv av. Cov roj yuav tsum tau txhaj los ntawm cov roj valve qis. Lub tshuab nqus tsev twj tso kua mis yuav tsum tau khaws cia thoob plaws hauv cov txheej txheem sau, nrog cov seem seem tsawg dua lossis sib npaug li 20Pa. Cov roj kub yuav tsum siab tshaj lub cev kub; roj qhov hluav taws xob kub ntawm lub lim yuav tsum yog 55℃-65 degree. Filling ceev yuav tsum tsis pub tshaj 100L / min. Thaum lub sij hawm tag nrho cov txheej txheem, lub tshuab nqus tsev lim inlet thiab qhov hluav taws xob kav yuav tsum tsis txhob hloov nyob rau hauv qhib - huab cua puag.

9.3 Nqus tuav thiab roj theem

Tsis txhob sau thaum cov roj qib 100-200mm hauv qab lub tank saum. Khaws lub tshuab nqus tsev: rau 110kV transformers, tuav lub tshuab nqus tsev yam tsawg 2 teev; rau 220kV transformers, tsawg kawg yog 4 teev.

9.4 Ncej-Tau tshem tawm cua

Tom qab cov roj filling, qhib cua- los ntshav plugs ntawm cov cua txias, bushings, gas relays, conservators, thiab radiators tso pa tawm. Tsis txhob kaw cov cua lim kom txog thaum cov roj ntws tawm. Rau kev yuam cov roj kev hloov pauv, pib tag nrho cov khoom siv txias thiab xa mus rau tsawg kawg 4 teev kom tshem tawm cov huab cua seem.

9.5 Cov Roj Kub Kub

Rau 330kV thiab saum toj no transformers, kub roj ncig yog yuav tsum tau tom qab nqus filling. Cov txheej txheem roj kub kub siv lub tshuab nqus tsev siab - lub tshuab nqus tsev, nrog lub qhov hluav taws xob roj kub tsis qis dua 50℃lossis siab dua 80℃; tank sab hauv kub tsis qis dua 40 degree. Circulation sij hawm: 220-330kV transformers tsis pub tsawg tshaj 24 teev; 500kV transformers tsis pub tsawg tshaj 48 teev. Lub sij hawm xa mus tiag tiag yuav tsum tso cai rau tag nrho cov roj ntim mus ncig tsawg kawg ob zaug.

9.6 Roj Qib Kho

Tom qab sau, txheeb xyuas cov roj ntsuas ntsuas ntawm lub sijhawm tsis tu ncua. Cov roj qib yuav tsum phim cov cim ntawm lub conservator sib haum mus rau qhov kub thiab txias ambient . 1–2 teev tom qab sau, xyuas cov roj qib dua. Yog tias cov roj qhov siab tau poob qis, ntxiv cov roj coj mus rau qhov sib piv cov kab kub.

9.7 Static Settling

Tom qab sau, lub transformer yuav tsum tau nyob rau lub sij hawm zoo li qub nyob rau hauv lub sij hawm kom cia cov roj kom tag nrho thiab tshem tawm cov impurities thiab npuas. Rau 110kV transformers, static settling lub sij hawm ntau dua los yog sib npaug rau 24 teev; rau 220kV transformers, Ntau tshaj lossis sib npaug rau 48 teev.

 

 

 

 

 

 

Transformer roj yog cov kua ua kua. Kev haus luam yeeb thiab qhib nplaim taws raug txwv nruj heev ntawm qhov chaw teeb tsa. Yog tias yuav tsum tau siv roj welding lossis hluav taws xob vuam, kev tiv thaiv hluav taws yuav tsum tau ua nruj me ntsis. Cov cuab yeej tiv thaiv hluav taws yuav tsum tau teeb tsa ua ntej kev teeb tsa, nrog rau cov neeg ua haujlwm saib xyuas. Cov nplooj ntawv thiab paj rwb rau hauv cov roj transformer yuav tsum tau sau nrog cov roj pov tseg thiab muab pov tseg kom sib npaug tom qab kev teeb tsa.

Kev ntsuas kev nyab xeeb ntxiv:

• Ua ntej kev teeb tsa, tus thawj coj-hauv- tus thawj coj thiab tus thawj saib xyuas kev nyab xeeb yuav tsum hu rau txhua tus neeg tsim khoom rau kev sib tham txog kev nyab xeeb ua haujlwm, muab kev qhia txog kev nyab xeeb, thiab tshaj tawm txoj cai kev nyab xeeb
• Cov neeg ua haujlwm tsis cuam tshuam yuav tsum tsis txhob nkag mus rau hauv qhov chaw teeb tsa
• Cov cuab yeej thiab cov khoom dhau los thiab nqis yuav tsum tau khi; tsis pub pov tseg
• Thaum txhim kho lossis tshem cov khoom uas pheej poob ntawm qhov siab, ob tus neeg yuav tsum ua haujlwm ua ke
• Thaum siv lub teeb pom kev lag luam, 220V teeb yuav tsum tsis txhob muab coj mus rau hauv lub tank roj, thiab yuav tsum tsis txhob muab lub hwj chim ib ntus tso nrog cov khoom siv hluav taws xob tsis zoo.

 

 

 

 

 

 

11.1 Ua ntej-Kev Tshawb Fawb Kev Ua Haujlwm

Ua ntej lub transformer muab tso rau hauv kev sim ua haujlwm, ib qho kev tshuaj ntsuam xyuas yuav tsum tau ua:

• Lub cev tseem ceeb thiab cov khoom siv tag nrho sib sau ua ke thiab zoo; theem txoj hauj lwm thiab cov cim raug
• Cov roj tank thiab tag nrho cov khoom tau so huv si, tsis muaj roj to
• Conservator thiab bushing roj qib ntsuas qhov tseeb thiab raug, nrog qhov sib txawv hauv kev ntsuas qhov yuam kev
• Cov khoom siv cua txias ua haujlwm ib txwm; roj twj thiab kiv cua khiav kom raug; tswj circuits ua haujlwm kom raug
• Roj relay ntsia tau rau hauv qhov tseeb; roj theem ib txwm; gas tag nrho drained
• Moisture absorber puv nrog allochroic silica gel; roj khob muaj cov roj ntshiab ntawm cov qib tsim nyog
• Kais changer ua haujlwm yooj yim; lub hom phiaj qhia tseeb; peb -phase tap txoj hauj lwm zoo ib yam
• Core grounding lugs, roj tank grounding, bushing grounding, thiab cov ntaub thaiv npog hauv av ua tiav thiab ntseeg tau hauv av
• Tsis muaj-load terminals ntawm bushing- hom tam sim no transformers luv-circuited thiab grounded

Phasing check:Transformer theem thiab winding kev sib txuas pab pawg yuav tsum ua kom tau raws li qhov yuav tsum tau ua haujlwm ua ntej ua kom muaj zog.

11.2 Kev Ntsuas Hluav Taws Xob

Txhua qhov kev ntsuam xyuas hluav taws xob yuav tsum ua raws li GB 50150-2016 ua ntej ua haujlwm. Cov khoom xeem yuav tsum muaj xws li:

Tsis muaj.	Cov khoom kuaj
1	Insulating roj xeem los yog SF6 gas test
2	Kev ntsuas ntawm DC tsis kam ntawm windings ua ke nrog bushings
3	Voltage ratio xyuas ntawm tag nrho cov kais dej
4	Peb -theem kev sib txuas pab pawg kuaj xyuas thiab polarity check (ib zaug-theem)
5	Rwb thaiv tsev kuj ntsuas ntawm cov tub ntxhais thiab clamps
6	Tsis yog -kev kuaj cov plooj (porcelain bushing test).
7	Ntawm -load kais - kev tshuaj xyuas thiab kev ntsuas hloov pauv
8	Rwb thaiv tsev tsis kam, nqus piv, lossis polarization Performance index ntsuas ntawm windings nrog bushings
9	Dielectric poob yam tseem ceeb (tanδ) thiab ntsuas qhov ntsuas ntawm windings nrog bushings
10	Winding deformation xeem
11	AC withstand voltage xeem ntawm windings nrog bushings
12	Ntev -ntev sijhawm induced AC tiv taus qhov ntsuas hluav taws xob nrog kev ntsuas qhov tso tawm ib nrab
13	Impact kaw test ntawm rated voltage
14	Phase kuaj
15	Kev ntsuas suab nrov

Rau 66kV thiab saum toj no transformers, yaj roj chromatographic tsom xam ntawm cov roj yuav tsum tau ua peb zaug: tom qab cov roj sau thiab daws, 24 teev tom qab tiv thaiv thiab ib feem ntawm qhov kev ntsuam xyuas tawm, thiab 24 teev tom qab cuam tshuam kaw thiab ua haujlwm ntawm qhov ntsuas hluav taws xob. Tag nrho cov ntsiab lus hydrocarbon hauv cov roj hloov pauv tshiab yuav tsum tsis pub tshaj 20μL / L, H₂ tsis tshaj 10μL / L, thiab C₂H₂ tsis tshaj 0.1μL / L.

11.3 Impact Kaw Test

Lub transformer yuav tsum tau 5 zaug ntawm tsis muaj -load puv -voltage cuam tshuam kaw. Tom qab thawj lub zog, lub sijhawm yuav tsum tsis pub tsawg dua 10 feeb. Lub magnetizing inrush tam sim no yuav tsum tsis txhob ua rau cov cuab yeej tiv thaiv tsis zoo. Rau nruab nrab-point- grounded systems, qhov nruab nrab point yuav tsum tau grounded thaum lub sij hawm cuam tshuam.

11.4 Kev sim ua haujlwm

Tom qab muaj kev cuam tshuam zoo kaw, lub tshuab hloov pauv yuav tsum tau muab tso rau hauv kev sim ua haujlwm, feem ntau khiav ntawm qhov siab tshaj plaws uas muaj nyob rau ntawm lub sijhawm ntawd rau 24 teev tas mus li. Tom qab 24 teev ntawm kev ua tiav kev ua haujlwm tsis muaj qhov txawv txav, qhov kev sim ua tiav tiav, thiab lub tshuab hloov pauv tuaj yeem raug muab tso rau hauv kev pabcuam.

11.5 Cov ntaub ntawv xa mus

Thaum lees txais tiav, cov ntaub ntawv hauv qab no yuav tsum raug xa mus:

• Cov ntaub ntawv kev teeb tsa kev teeb tsa, cov ntaub ntawv soj ntsuam tseem ceeb, cov ntaub ntawv kom qhuav, cov ntaub ntawv soj ntsuam zoo, thiab hluav taws xob tes- dhau daim ntawv xeem
• Kev tsim cov duab kos thiab tsim cov ntaub ntawv hloov pauv
• Chaw tsim tshuaj paus cov khoom siv phau ntawv qhia, cov ntaub ntawv xeem, daim ntawv pov thawj ntawm kev ua raws, thiab kev teeb duab kos duab
• Cov npe ntawm cov khoom seem, cov khoom siv, cov cuab yeej tshwj xeeb, thiab cov cuab yeej ntsuas

 

 

 

 

Phau ntawv qhia no tsom rau cov fais fab loj loj hauv cov chaw ua haujlwm substations thiab cov chaw tsim khoom lag luam. Rau lwm qhov kev teeb tsa transformer feem ntau pom nyob rau hauv kev faib khoom sib txuas thiab ib puag ncig sab nraum zoov, thov sab laj nrog cov ntaub ntawv hauv qab no.

• Substation Transformer Installation and Operation Guide
• Ncej Mounted Transformer Installation thiab Ua Haujlwm Qhia
• Pad Mounted Transformer Installation thiab Ua Haujlwm Qhia
• Dry Type Transformer Installation and Operation Guide
• Compact Substation Installation thiab Kev Qhia Ua Haujlwm

 

 

 

 

 

 

Kev teeb tsa thiab kev ua haujlwm kom raug yog qhov tseem ceeb rau kev nyab xeeb thiab txhim khu kev qha ntev - lub sijhawm ua haujlwm ntawm lub zog hloov hluav taws xob. Phau ntawv qhia no suav nrog cov chaw tsim khoom tsim nyog nrog cov qauv siv hauv lub tebchaws. Txhua tus neeg ua haujlwm koom nrog yuav tsum tau ua raws li cov txheej txheem tau piav qhia hauv qab no, khaws cov ntaub ntawv kom ntxaws thoob plaws hauv cov txheej txheem kev teeb tsa, thiab sab laj nrog cov chaw tsim khoom thaum muaj qhov tsis paub tseeb tshwm sim.