Ua ntej kev ntsuas ntsuas transformer tus kws kuaj xyuas yuav paub txog cov cai tswj kev nyab xeeb ntawm Tshooj 2. Cov cai no yuav tsum tau ua raws li txhua yam kev xeem. Hauv qab no yog qhov kwv yees ua ntu zus rau kev sim transformer:
1. Tshawb xyuas transformer thiab qhov chaw rau shipping puas thiab ya raws.
2. Tshawb xyuas daim ntawv teev npe thiab cov ntawv luam tawm kom pom qhov voltages thiab sab nraud phasing txuas rau kab lossis tsheb npav.
3. Txheeb xyuas qhov ntsuas kub ntawm tag nrho cov ntsuas cua sov thiab lub ntsuas kub kub, choj RTDs thiab cov xov tooj ceeb toom cuam tshuam. Kev sib cuag yuav tsum zoo ib yam li cov hauv qab no:
Ib theem khiav txhua lub sijhawm (yuav tsum txias)
2nd theem ntawm 80 degree
3rd theem ntawm 90 degree
Kub-spot tswb 100 degree (tawm ntawm 110 degree thaum siv)
Sab saum toj-roj tswb 80 degree ntawm 55 degree nce thiab 75 degree ntawm 65 degree nce
OA=tsis muaj kiv cua lossis lub twj tso kua mis
FA =cov kiv cua khiav
FOA=kiv cua thiab twj tso kua mis khiav
4. Kos thiab Megger tag nrho cov xaim xaim mus rau taw tes: kiv cua, twj tso kua mis, tswb, cua sov, kais hloov pauv, thiab tag nrho lwm yam khoom siv ntawm lub transformer thiab interconnecting cables
5. Txhua lub tsev txhab nyiaj siab tshaj 150 MVA yuav tsum tau nqus kom qhuav. Tsis txhob siv qhov ntsuas hluav taws xob rau lub winding thaum lub tshuab nqus tsev ziab. Xyuas kom tseeb tias cov terminals luv luv thiab hauv av thaum lub sij hawm cov roj ncig vim yog qhov loj ntawm cov nqi hluav taws xob uas tuaj yeem tsim nyob rau ntawm winding.
6. Tom qab lub tank tau ntim cov roj, paub meej tias cov qauv roj raug xa mus rau Chemical Lab thiab nws cov txiaj ntsig tau nkag mus rau hauv cov ntaub ntawv xeem hauv tuam txhab. Nco ntsoov cov roj theem thiab qhov kub thiab txias thaum ua tiav cov filling.
7. Lub zog ua haujlwm txhawm rau txheeb xyuas qhov kev sib hloov ntawm cov twj thiab cov kiv cua kom raug thiab kev ua haujlwm raug ntawm cov khoom siv hauv qab (UL) kais hloov pauv, thaum muab. Tsis tas li ntawd, xyuas lub rhaub, lub tswb thiab tag nrho lwm yam khoom siv rau kev ua haujlwm kom raug.
12. Following are the winding tests to be performed: Ratio and Polarity (Voltage Method or TTR). The preference is that all large power Transformers (>1 MVA) raug kuaj nrog TTR kuaj.
Impedance
DC winding tsis kam
Megger thiab Power Factor windings, bushing, thiab ntes. Lus Cim: Tos kom txog rau thaum 24 teev tom qab ua tiav cov roj filling rau qhov ntsuas fais fab.
13. Load CT circuits tag nrho thiab flash rau polarity.
14. Ua ntej energization, mus ncig xyuas lub txhab nyiaj tiv thaiv schemes thiab xyuas kom tseeb tias cov roj sau relay yog tsis muaj roj.
15. Thaum energizing lub txhab nyiaj los yog khaws cov khoom thauj, saib xyuas lub txhab nyiaj tam sim no thiab qhov hluav taws xob, suav nrog UL kais-changer ua haujlwm.
16. Check the proper phasing and voltage of the bank to the system before the load is picked up. When possible, large transformers (>1 MVA) yuav tsum nyob twj ywm rau yim teev ua ntej nqa lub nra.
17. Ua kev kuaj xyuas hauv cov ntsuas ntsuas thiab relays.
18. Tso tawm rau Kev Ua Haujlwm thiab tshaj tawm cov ntaub ntawv muaj zog rau TNE lub chaw haujlwm.
19. Muab cov ntawv luam tawm thiab cov ntawv xeem, uas yuav tsum muaj cov hauv qab no:
Tag nrho cov ntaub ntawv xeem
Cov ntaub ntawv noo noo thiab roj
Teeb meem tshwm sim
Cov ntaub ntawv hauv kev pabcuam
Lub sijhawm muaj zog thiab tso tawm rau kev ua haujlwm
Ib qho teeb meem txawv txawv uas cov ntaub ntawv yuav pab tau rau hauv kev sim khoom siv yav tom ntej