Kev Siv Roj-Immersed Transformer Winding: Kev Nkag Siab Txog Kev Siv Tshuab thiab Cov Qauv Tsim

Roj-Immersed Transformer Cov xov hlau yog cov khoom tseem ceeb hauv cov kab ke faib hluav taws xob, tsim los kom xa hluav taws xob tau zoo thaum ua kom ntseeg tau tias muaj kev ntseeg siab thiab ruaj khov. Hauv qab no yog kev tshuaj xyuas ntxaws ntxaws ntawm lawv cov qauv, cov ntaub ntawv, thiab cov ntsiab cai ua haujlwm, uas tau tsim los ntawm cov qauv kev lag luam thiab cov lus qhia txog kev siv tshuab.

Qhov kub ntawm cov roj immersed transformer sab saum toj raug txwv tsis pub tshaj 95 ° C, feem ntau txwv tsis pub tshaj 85 ° C, qhov kev xaiv dav dav ntawm cov khoom siv rwb thaiv tsev A, qhov kub siab tshaj plaws ntawm cov khoom siv rwb thaiv tsev yog 95 ~ 105 ° C, hauv Suav teb cov lus qhia txog kev ua haujlwm ntawm cov transformer yog raws li qhov kub ua haujlwm ntawm 40 ° C ua tus qauv, winding ntawm qhov nruab nrab kub ntawm cov roj suav nrog 65 ° C, Qhov kub nce ntawm cov roj saum toj kawg nkaus mus rau cov roj yog qhov tseeb ntawm 55 ° C, yog li cov winding uas muaj cov tub ntxhais transformer suav nrog qhov kub nce ntawm cov roj ntawm 10 ° C.

Yog tias qhov kub siab tshaj plaws ntawm lub transformer yog 85 ° C, qhov kub ntawm winding yog 95 ° C; Yog tias qhov kub siab tshaj plaws yog 95 ° C, qhov kub ntawm winding tau mus txog 105 ° C, uas tau mus txog qhov kub siab tshaj plaws ntawm cov khoom siv txheej rwb thaiv tsev winding. Qhov kub siab dhau yuav ua rau cov khoom siv txheej rwb thaiv tsev laus zuj zus, ua rau cov roj transformer puas tsuaj sai dua, ua rau lub neej ua haujlwm ntawm cov khoom puas tsuaj. Kev Hloov Pauv Hloov Chaws, thiab txawm tias ua rau muaj kev raug mob kev nyab xeeb.

Lub tshuab roj muaj zog, cua txias, cua sov, qhov kub siab tshaj plaws yog 75 ℃, thiab cua sov yog 35 ℃; Lub tshuab roj ntuj, tiv thaiv kub dhau, cua txias, feem ntau tsis haum rau qhov kub siab tshaj plaws yog 85 ° C, qhov kub siab tshaj plaws yog 95 ° C, thiab cua sov yog 55 ° C, yog tias pom tias muaj qhov txwv tsis pub tshaj qhov yuav tsum tau ua, yuav tsum tshaj tawm cov sijhawm tsim khoom tam sim ntawd, thiab siv cov kev ntsuas tiv thaiv kev thauj khoom.

1. Lub ntsiab lus thiab lub luag haujlwm tseem ceeb

Cov xov hlau transformer uas muab roj rau hauv muaj cov kauj tooj liab lossis txhuas qhwv ib ncig ntawm lub plawv hlau silicon uas tau muab laminated. Cov xov hlau no tau muab tso rau hauv cov roj rwb thaiv tsev tag nrho, uas ua haujlwm ob lub hom phiaj: kev rwb thaiv tsev hluav taws xob thiab kev tswj cua sov. Cov xov hlau hloov cov tswv yim hluav taws xob siab mus rau hauv cov zis hluav taws xob qis dua (lossis rov qab) ntawm kev siv hluav taws xob electromagnetic, ua rau muaj kev nyab xeeb xa hluav taws xob hla cov grids.

2. Cov khoom siv sib xyaw

Cov khoom siv conductive:

Tooj liab: Feem ntau siv rau cov xov hluav taws xob siab vim nws muaj kev coj ua zoo dua thiab lub zog kho tshuab. Cov xov hluav taws xob qis (≤500 kVA) feem ntau siv cov qauv cylindrical ob txheej, thaum lub peev xwm loj dua (≥630 kVA) siv cov qauv ob-helix lossis plaub-helix los ua kom zoo dua qhov kev faib tawm tam sim no.

Txhuas: Qee zaum siv rau cov ntawv thov uas xav tau tus nqi qis, txawm tias ua haujlwm tau zoo dua li tooj liab.
Kev rwb thaiv tsev:

Cov ntaub ntawv uas muaj zog tiv taus siab (piv txwv li, epoxy resins, cellulose-based paper) cais cov windings ntawm lub hauv paus thiab ib leeg.

Cov rwb thaiv tsev ntau txheej tiv thaiv cov luv luv circuits nyob rau hauv thermal stress lossis mechanical deformation.

3. Kev Tsim Qauv

Kev npaj ntawm winding:

Concentric (Cylindrical): Feem ntau siv rau hauv peb-theem transformers, qhov twg cov windings qis-voltage raug muab tso rau hauv cov windings siab-voltage kom txo qis cov dej xau.

Txheej-Qhov Ncauj (Helical) Winding: Siv rau cov ntawv thov siab tam sim no, muaj cov khaubncaws sab nraud povtseg interleaved kom txo cov eddy tam sim no poob.

Kev sib xyaw ua ke ntawm kev txias:

Cov windings suav nrog cov roj ducts los channel cua sov dissipation ntawm natural los yog forced convection.

Cov thoob roj corrugated hloov cov khoom txuag ib txwm muaj, ua rau cov roj nthuav dav thaum tswj hwm qhov chaw kaw.

4. Kev Txhim Kho Kev Ua Haujlwm

Tsim Kev Poob Qis:

Amorphous Alloy Cores: Txo qhov hysteresis thiab eddy current losses (piv txwv li, S11-M series transformers ua tiav 30% qis dua qhov poob dua li cov qauv qub)

Dyn11 Connection Group: Txo qhov kev cuam tshuam harmonic thiab txhim kho qhov zoo ntawm lub zog los ntawm kev them rov qab rau cov hluav taws xob thib peb-harmonic

Kev Tiv Thaiv Luv-Circuit:

Cov clamps winding thiab cov txheej txheem winding spiral ua rau muaj kev ruaj khov kho thaum muaj teeb meem.

Cov pa roj silica gel thiab Buchholz relays saib xyuas cov dej noo thiab cov roj ntws tsis zoo

5. Daim Ntawv Thov thiab Kev Txij Nkawm

Cov Xwm Txheej Kev Xa Mus:

Cov chaw hloov hluav taws xob rau kev lag luam, cov chaw fais fab hauv nroog, thiab cov tshuab hluav taws xob rov ua dua tshiab (piv txwv li, cov chaw ua liaj ua teb cua).

Cov peev xwm ntsuas tau txij li 50 kVA txog 25,000 kVA, nrog rau cov hluav taws xob txog li 35 kV

Cov txheej txheem txij nkawm:

Kev kuaj roj tsis tu ncua thiab kev tshuaj xyuas cov roj yaj (DGA) kom pom kev puas tsuaj ntawm cov khoom rwb thaiv tsev.

Kev thaij duab thermal los txheeb xyuas cov chaw kub hauv cov windings.

6. Kev Tsim Kho Tshiab hauv Kev Siv Tshuab Winding

Kev Siv Lub Tshuab Nqus Tsev: Tshem tawm cov qhov cua thaum lub sijhawm tsim khoom, txhim kho kev ruaj khov ntawm kev rwb thaiv tsev

Kev Saib Xyuas Ntse: Cov sensors uas siv IoT taug qab qhov kub thiab txias ntawm winding thiab load dynamics hauv lub sijhawm tiag tiag.