Transformer Oil Testing: Phau Ntawv Qhia Txog Kev Siv Kom Ua Kom Koj Cov Roj Transformers Noj Qab Haus Huv
Yog tias koj yog lub luag haujlwm rau lub tshuab hluav taws xob hloov hluav taws xob, koj twb paub lawm tias kev sim roj transformer tsis yog qee lub thawv los kos- nws yog ib txoj hauv kev zoo tshaj plaws los ntes cov teeb meem thaum ntxov. Kuj hu ua insulating roj tsom xam los yog dielectric kua kuaj, cov khoom no qhia koj txog dab tsi tshwm sim hauv koj lub transformer ua ntej txhua yam mus rau sab qab teb.
Cia peb ua tiag: tsis muaj leej twg xav tau lub tshuab hloov pauv rau lawv. Kev ntsuam xyuas tsis tu ncua pab cov khoom siv hluav taws xob, cov chaw tsim khoom, thiab cov neeg saib xyuas chaw pw tsaug zog zoo dua thaum hmo ntuj.
Yog li vim li cas thab nrog Transformer Oil Test?
Ntawm no yog qhov deal. Transformer roj ua ob txoj haujlwm tseem ceeb: nws insulates (thiab nws zoo nkauj ntawm nws) thiab nws ua kom txias. Tab sis dhau sij hawm, cua sov, oxygen, noo noo, thiab tag nrho cov hluav taws xob kev nyuaj siab coj lawv tus xov tooj hu. Cov roj pib tawg -oxidation kicks hauv, cov ntaub ntawv sludge, acidity nce mus, thiab noo noo nkag mus rau hauv. Ua ntej koj paub nws, koj lub rwb thaiv tsev tsis yog insulating zoo li nws siv.
Qhov kev sim tau txais koj li cas?
Pom cov teeb meem thaum ntxov nrog Kev Ntsuam Xyuas Cov Hluav Taws Xob Hluav Taws Xob (DGA)-qhov tseeb, qhov no yog tus cawm seej
Tsis txhob xav tsis thoob zoo li hluav taws kub lossis tawg
Paub thaum twg los kho cov roj thaum hloov nws
Ua raws li cov qauv thiab cov neeg tuav pov hwm
Ua kom koj lub transformer thiab nws cov roj kav ntev dua
Qhov Kev Xeem Uas Tseem Ceeb Li Cas?
Ib qho kev sim tshuaj transformer roj tsis yog tsuas yog khiav ib qho kev sim thiab hu nws ib hnub. Nov yog yam koj xav tau:
1. Dissolved Gas Analysis (DGA)
Qhov no yog qhov loj. Thaum ib yam dab tsi tsis ncaj ncees lawm sab hauv, lub transformer tsim gases uas yaj txoj cai rau hauv cov roj.
Gases koj saib: Hydrogen (H₂), Methane (CH₄), Ethylene (C₂H₄), Acetylene (C₂H₂), Carbon Monoxide (CO), Carbon Dioxide (CO₂).
Txhawm rau kom nkag siab txhua yam, tib neeg siv txoj hauv kev zoo li Rogers Ratios, Duval Daim duab peb sab, lossis IEEE C57.104.
2. Dielectric Breakdown Voltage (BDV)
Yooj yim zoo nkauj- qhov no qhia koj tias qhov hluav taws xob ntau npaum li cas cov roj tuaj yeem tswj tau ua ntej nws hais tias "Kuv ua tiav." Cov lej qis feem ntau txhais tau tias ya raws lossis av.
3. Cov ntsiab lus noo noo
Dej yog xov xwm phem rau rwb thaiv tsev lub neej. Lawv ntsuas qhov no siv Karl Fischer titration.
4. Acidity
Kuj hu ua neutralization naj npawb. Nws pib qhia koj ntau npaum li cas cov roj tau oxidized thiab hnub nyoog.
5. Interfacial Tension (IFT)
Qhov no tiv thaiv cov polar contaminants thiab oxidation byproducts.
6. Fais fab Factor / Dissipation Factor (Tan Delta)
Pab pom cov kab mob conductive uas ntab ncig.
7. Lwm yam khoom koj xav tau
Xim thiab nws zoo li cas (yog tias nws zoo li cov roj cav uas tau zaum tau 10 xyoo, qhov ntawd yog qhov tsis txaus ntseeg)
Furan tsom xam (xyuas ntawm daim ntawv rwb thaiv tsev)
Oxidation stability thiab inhibitor cov ntsiab lus
suav particle, cov ntsiab lus hlau, flash point -koj tau txais lub tswv yim
Kev txwv tsis pub dhau -Cov Lus Qhia Rough
Saib, cov lej no tsis tau teem rau hauv pob zeb. Nws nyob ntawm koj qhov voltage, koj hom roj, thiab tus qauv twg koj ua raws. Nco ntsoov xyuas koj cov chaw tsim khoom specs thiab IEEE / IEC cov lus qhia. Tab sis ntawm no yog ib tug ballpark:
| Parameter | Cov Roj Tshiab (Hom) | Hauv -Kev Pabcuam (Am txais) | Action Yog Hauv qab no |
|---|---|---|---|
| Dielectric tawg Voltage | Ntau tshaj lossis sib npaug li 60-70 kV | Ntau tshaj lossis sib npaug li 30-50 kV | Hauv qab 30 kV |
| Cov ntsiab lus noo noo | <10–25 ppm | <20–35 ppm | >35-50 ppm |
| Acidity | <0.01–0.03 mg KOH/g | <0.1–0.2 mg KOH/g | >0.2 mg KOH/g |
| Interfacial Tension | >40-45 mN / m | >25-35 mN / m | <25 mN/m |
| Fais fab Factor @ 90 degree | <0.005 | <0.01–0.02 | >0.02 |
| Xim (ASTM D1500) | Tsawg dua los yog sib npaug li 0.5 | Tsawg dua lossis sib npaug li 2.0 | Darkening ceev |
DGA Gases thiab lawv txhais li cas
| Roj | Kev txwv tsis pub muaj (ppm) | Dab tsi mus |
|---|---|---|
| Hydrogen (H₂) | <50–100 | Ib nrab tso tawm, corona |
| Methane (CH₄) | <50–120 | Tsawg- teeb meem thermal |
| Acetylene (C₂H₂) | <1–35 | Siab- zog arcing (tsis zoo) |
| Ethylene (C₂H₄) | <50–100 | Siab -kub thermal faults |
| Ethane (C₂H₆) | <50–65 | Nruab nrab thermal faults |
| Cov pa roj carbon monoxide (CO) | <350–500 | Ntawv rwb thaiv tsev overheating |
| Cov pa roj carbon dioxide (CO₂) | <2,500 | Ib txwm laus / oxidation |
Daim ntawv ceeb toom ceev: Tag Nrho Cov Hluav Taws Xob Hluav Taws Xob (TDCG) cov qauv thiab qhov sib piv muab rau koj cov duab zoo dua. Tsis txhob ntsia ntawm ib tus lej xwb.
Koj Yuav Tsum Tau Xeem Li Cas?
Nov yog qhov ua haujlwm rau ntau tus neeg:
| Transformer Hom / Txoj Cai | Ntau zaus |
|---|---|
| Tshiab / Tsuas yog commissioned | Tom qab sau, ces 1 hli, ces 1 xyoo |
| Critical / High voltage (>69 kV (nqe) | Txhua xyoo |
| Kev faib tawm / Tsawg qhov tseem ceeb | Txhua 1-3 xyoos |
| Tom qab ua txhaum, overload, los yog tswb | Tam sim ntawd + ua raws-up |
| Old transformers (>20-30 xyoo) | Txhua 6-12 lub hlis |
Tau txais cov qauv roj zoo-Tsis txhob thab qhov no
Ua siab ncaj, koj tuaj yeem khiav tag nrho cov kev xeem zoo nkauj uas koj xav tau, tab sis yog tias tus qauv yog
phem, qhov tshwm sim yog khib nyiab. Nov yog txoj hauv kev:
Kos los ntawm lub valve hauv qab, thiab yaug nws ua ntej
Siv cov fwj tshuaj dawb huv, qhuav amber iav los yog koob txhaj tshuaj
Khaws huab cua thiab noo noo kom deb ntawm cov qauv
Sau cov roj kub thiab qhov hloov pauv hloov
Ua raws li ASTM D923 lossis IEC 60475
Tom qab ntawd muab cov qauv no mus rau lub chaw kuaj sim tiag tiag -tsis yog koj tus npawg lub chaw nres tsheb.
Cov Qauv Koj Yuav Tsum Paub
ASTM: Cov qauv ntsuas (D1533 rau ya raws, D3612 rau DGA, thiab lwm yam)
IEC 60422: Yuav ua li cas saib xyuas hauv -cov roj ntxhia insulating roj
IEEE C57.106: Txais thiab kho
IEEE C57.104: Kev txiav txim siab ntawm DGA
IEC 60296: Cov roj ntxhia tshiab insulating roj
Yuav Ua Li Cas Nrog Cov Ntsiab Lus
Saib cov kev hloov pauv, tsis yog ib qho -tawm tus lej. Xav txog lub transformer lub hnub nyoog thiab keeb kwm. Tej zaum koj yuav xaus tsis ua dab tsi, lossis koj yuav xav tau roj rov qab, pom, lossis - qhov xwm txheej phem tshaj - kev tshuaj xyuas sab hauv.
Hnub no yog dab tsi tshiab?
Online DGA saib (tiag -cov ntaub ntawv sijhawm, zoo nkauj)
Ester - kua raws li (xav tau cov kev sim sib txawv)
Portable testers koj tuaj yeem nqa ntawm -site
Kev sib koom ua ke IoT rau kev kwv yees txij nkawm
Kab hauv qab
Transformer roj kuaj tsis yog xaiv tau yog tias koj xav kom koj lub zog transformers kav ntev. Qhov kev kuaj xyuas zoo ntes cov teeb meem ntxov, txuag koj cov nyiaj, thiab ua kom lub teeb rau. Tsis txhob tos ib yam dab tsi tawg.
FAQ
Q: Koj tuaj yeem xa lub transformer sai npaum li cas?
A: Nws nyob ntawm qhov ntau thiab muaj peev xwm ntawm transformer, feem ntau nyob rau hauv ib lub hlis txij li hnub kos duab lees paub los ntawm tus neeg yuav khoom.
Q: Ntev npaum li cas koj tuaj yeem muab qhov kev lees paub zoo?
A: 24 lub hlis txij li hnub transformer ua haujlwm.
Q: Koj txais txoj kev them nyiaj dab tsi?
A: T / T (hloov pauv) nyiam, L / C ob leeg txais.
