Tooj Vs. Aluminium Windings: Cov khoom xaiv rau kev faib khoom Transformers

Copper windings thiab aluminium windingsntawm faib transformers yog cov tseem ceeb sib txawv yam uas cuam tshuam rau lawv kev ua tau zoo, nqi, thiab kev pab lub neej. Muaj qhov sib txawv tseem ceeb ntawm ob qho ntawm cov khoom siv, kev ua haujlwm hluav taws xob, kev lag luam, thiab kev ua haujlwm thiab kev tu vaj tse.

 

Kab lus no yuav txheeb xyuas los ntawm ntau qhov kev pom los muab kev nkag siab zoo ntawm lawv qhov sib txawv.

 

 

Losses thiab Efficiency

 

Copper windings muaj hluav taws xob conductivity siab, ua rau qis tooj liab poob nyob rau hauv tib lub tam sim no. Piv txwv li, 1000kVA transformer nrog tooj liab windings muaj tooj liab poob 15%-25% qis dua ib qho nrog txhuas windings thaum ua haujlwm ntawm tag nrho cov load. Nws txuag hluav taws xob thaum lub sijhawm ua haujlwm ntev - thiab ua tau raws li qhov yuav tsum tau ua kom txuag hluav taws xob.

Aluminium windings muaj hluav taws xob conductivity tsawg, yog li lawv tus ntoo khaub lig-sectional cheeb tsam yuav tsum tau nce ntxiv kom txo tau qhov tsis kam. Txawm li cas los xij, tooj liab poob tseem me ntsis siab dua, thiab qhov ua tau zoo yog 1% -3% qis dua.

 

Tshaj peev xwm

 

Copper windings muaj qhov siab melting point (1083 degree) thiab thermal stability zoo heev. Thaum overloaded, qhov kub nce qeeb, thiab cov rwb thaiv tsev tsis yooj yim puas. Lawv tuaj yeem tiv taus overload rau 1-2 teev.

Aluminium windings muaj qhov qis melting point (660 degree). Thaum overloaded, kub nce sai, uas yooj yim ua rau rwb thaiv tsev laus los yog luv luv circuits. Lawv tsuas tuaj yeem tiv taus ntau tshaj li 30 feeb, yog li tus nqi thauj khoom yuav tsum tau tswj nruj me ntsis.

 

Kub nce thiab kub dissipation

 

Copper windings muaj cov thermal conductivity siab (401 W / (m·K)), ua kom muaj kev hloov pauv sai thiab qis dua qhov kub siab (5-10K qis dua li ntawm aluminium windings).

Aluminium windings muaj cov thermal conductivity tsawg (237 W / (m·K)), uas ua rau cov cua sov tuaj yeem yooj yim. Cov radiators loj dua lossis txhim kho cov qauv yuav tsum tau tsim; txwv tsis pub, lub neej kev pab cuam ntawm lub rwb thaiv tsev yuav luv luv.

 

Parameter	Copper Winding	Aluminium Winding
Hluav taws xob conductivity (20 degree)	58 MS / m	37 MS / m
Hla -Sectoral Requirement	datum	1.6
Qhov ntom	8.9 g / cm³	2.7 g / cm³
Tensile zog	200-250 MPa	70-140 MPa
Melting Point	1083 degree	660 degree
Thermal conductivity	401 W/m·K	237 W/m·K
Tus nqi khoom siv LME 3M Cu/Al Avg (Mar-Aug 2025)	US$ 9,785/ton	US$ 2,610/ton

 

 

Tus nqi pib khoom

Noj 2500kVA roj-immersed tis transformer ua piv txwv, cov khoom siv raw cov nqi ntawm cov txhuas- cov qauv mob yog 40% -60% qis dua cov tooj liab-mob version, nrog rau tag nrho cov khoom sib txawv ntawm 30% -50%. Txais siv txhuas-mob transformers tuaj yeem txo qhov peev nyiaj ua ntej ntawm cov phiaj xwm fais fab.

 

Ntev -Cov Nqi Ua Haujlwm thiab Kev Kho Mob

Tau txais txiaj ntsig los ntawm kev poob qis qis, tooj liab- cov kab mob hloov pauv tsim cov nqi hluav taws xob txuag nyiaj ntau thaum lub sijhawm ua haujlwm ntev -, uas tuaj yeem them tag nrho cov nqi pib yuav khoom ntau dua. Tsis tas li ntawd, tooj liab windings muaj qhov ua tau zoo ruaj khov thiab lub voj voog txij nkawm ntev dua, txo qis kev ua haujlwm txhua hnub thiab cov nqi kho mob.

Aluminium-tshuaj hloov pauv muaj qhov poob siab dua, ua rau 5% -10% siab dua cov nqi hluav taws xob txhua xyoo. Lub caij no, cov rwb thaiv tsev nrawm nrawm tshwm sim los ntawm kev ua haujlwm siab kub yuav tsum tau tshawb xyuas ntau zaus thiab kev saib xyuas, ntxiv rau kev siv sijhawm ntev dua -.

 

Service Life Disparity

Tooj liab nthuav tawm cov tshuaj lom neeg ruaj khov thiab siab -kub tsis kam. Tus qauv tsim kev pab cuam lub neej ntawm tooj liab- qhov txhab hloov pauv mus txog 25-30 xyoo nyob rau hauv ib txwm ua haujlwm.

Cov ntaub ntawv txhuas yog qhov ua rau oxidation, thiab kev ua haujlwm siab - kub ntawm aluminium windings exacerbates tivthaiv kev laus. Lub neej ua haujlwm tsim ntawm txhuas-mob hloov pauv tsuas yog 15-20 xyoo, luv luv dua li ntawm tooj liab- cov khoom siv kho mob.

 

 

 

Hauv Suav teb, qhov twg lub Hoobkas Huawei nyob, Lub Xeev Grid thiab lub lag luam tseem ceeb feem ntau siv tooj liab -core transformers. Kev siv aluminium-core transformers nyob rau hauv Tuam Tshoj lub Xeev Grid yog suav hais tias yog ib qho kev ua phem ntawm kev txiav cov ces kaum los ntawm cov neeg muag khoom thiab yuav ua rau muaj kev nplua loj. Txawm li cas los xij, xav txog qhov rov qab los ntawm kev nqis peev, feem ntau lub zog tshiab fais fab nroj tsuag siv aluminium-core transformers hauv lawv cov substations ntim los txo cov nqi tsim kho.

 

Thoob plaws ntiaj teb, 80% ntawm cov transformers faib yog aluminium-core. Lub teb chaws xws li cov nyob rau hauv Middle East thiab Russia siv txhuas-core transformers. Qhov laj thawj tseem ceeb yog qhov txiaj ntsig zoo ntawm tus nqi, uas zoo sib xws nrog cov kev xav tau loj ntawm - nplai kev tsim kho vaj tse nyob hauv Middle East thiab qhov dav - thaj tsam fais fab hauv cheeb tsam hauv Russia (tshwj xeeb yog nyob rau hauv thaj chaw deb) rau "qis- nqi thiab cov khoom siv hnyav". Nyob rau tib lub sijhawm, nws tseem tuaj yeem txo qhov kev cia siab ntawm cov khoom siv tooj liab txawv teb chaws, ntsuas kev lag luam thiab cov saw hlau ruaj khov.

 

 

 

Siv tau Scenario rau Copper Windings

1. Cov cheeb tsam uas muaj lub sijhawm ntev - lub sijhawm puv - kev ua haujlwm thauj khoom thiab nquag thauj khoom ntau dhau, suav nrog cov cheeb tsam hauv nroog hauv nroog thiab cov chaw ua lag luam uas muaj kev siv zog ruaj khov thiab siab zog.

2. Engineering tej yaam num nrog nruj zog-txuag cov qauv thiab siab yuav tsum tau mus ntev- lub sij hawm ruaj khov, xws li municipal fais fab engineering thiab txhawb fais fab chaw rau cov lag luam loj.

3. Kev ua haujlwm hnyav ib puag ncig nrog rau qhov kub thiab txias, cov av noo thiab cov ntug dej hiav txwv corrosive cua, qhov yuav tsum muaj kev ruaj ntseg thiab oxidation tsis kam.

 

Siv tau Scenario rau Aluminium Windings

1. Cov khoom siv hluav taws xob nyob deb nroog nrog cov nqi qis, ruaj khov thiab tsis muaj zog xav tau, thiab cov khoom me me hloov pauv ntau yam.

2. Tej yaam num ib ntus, nrog rau qhov chaw tsim kho hluav taws xob thiab chaw nyob ib ntus hauv lub quarter fais fab.

3. Tus nqi - cov haujlwm tseem ceeb uas ua rau qhov tseem ceeb ntawm kev nqis peev qis qis thiab tso cai rau kev saib xyuas cov khoom siv niaj hnub thiab kev tshuaj xyuas.

 

Thov Ib Daim Quote

 

Transformer winding xaiv tsis yog ib qho yooj yim tooj liab lossis txhuas xaiv, tab sis qhov kev txiav txim siab tseem ceeb uas txiav txim siab koj lub transformer ntev -lub sij hawm ruaj khov, nqi zog, thiab lub neej rov qab los. Tus nqi dig muag-txiav lossis dhau- kev qhia tshwj xeeb yooj yim ua rau lub zog poob ntau dua, ua txhaum ntau zaus, thiab ua haujlwm luv luv. Txhawm rau ua kom koj qhov project lub neej muaj nuj nqis, koj xav tau ascenario-raws li, nqi- optimized winding tovhaum rau koj qhov load, ib puag ncig thiab lub voj voog ua haujlwm.

 

 

 

 

Q: Dab tsi yog qhov tseem ceeb ntawm kev ua tau zoo ntawm tooj liab-mob thiab txhuas-mob transformers? Dab tsi scenarios lawv haum rau feem?

A: Qhov sib txawv tseem ceeb tsom rau 3 qhov tseem ceeb:

Zog Efficiency: Lub conductivity ntawm tooj liab windings (58 MS / m) yog ntau dua li ntawm txhuas (37 MS / m). Rau 1000kVA qauv, tag nrho -load tooj liab poob yog 15%-25% qis dua, thiab qhov ua tau zoo yog 1%-3% siab dua;

Overload Capacity & Heat Resistance: tooj liab muaj qhov melting point ntawm 1083℃thiab tuaj yeem tiv taus ntau dhau rau 1-2 teev, thaum txhuas (melting point 660 degree) tuaj yeem tiv taus ntau tshaj 30 feeb;

Kev Pabcuam Lub Neej & Kev ruaj ntseg: Lub neej tsim ntawm tooj liab windings yog 25-30 xyoo, piv nrog 15-20 xyoo rau txhuas windings.

 

Q: Tus nqi pib ntawm kev yuav khoom ntawm txhuas-mob hloov pauv yog 30%-50% qis dua li tooj liab- qhov txhab. Qhov twg yog tus nqi ntau dua - siv tau ntev?

A: Qhov kev txiav txim siab yuav tsum yog raws li "kev pabcuam lub voj voog + kev thauj khoom":

Luv-lub sij hawm & Tsawg-load Scenarios (xws li, qhov chaw tsim kho ib ntus, thaj chaw muaj hluav taws xob nyob deb nroog): Aluminium windings muaj 30%-50% tus nqi qis dua (siv cov roj 2500kVA- cov qauv ua piv txwv). Thaum lub load yam tsawg, qhov sib txawv ntawm tooj liab poob yog me me, ua rau aluminium windings ntau nqi-zoo;

Ntev -lub sij hawm & Tag Nrho-load Scenarios (xws li, industrial parks, municipal engineering): Txawm hais tias tooj liab windings muaj tus nqi pib dua, lawv txuag 5%-10% hauv cov nqi hluav taws xob txhua xyoo, thiab tus nqi pib sib txawv tuaj yeem rov qab tau hauv 2-5 xyoos. Nrog rau kev pab cuam lub neej txog 10 xyoo ntev dua thiab qis dua kev ua haujlwm thiab cov nqi kho mob, tooj liab windings yog kev lag luam ntau dua nyob rau hauv tag nrho lub neej voj voog.

 

Q: Cov teeb meem dab tsi yog aluminium-mob transformers nquag nyob rau hauv siab -kub, ib puag ncig ntub los yog nyob rau hauv ntau zaus? Yuav ua li cas zam lawv?

A: Cov ntsiab lus tsis zoo ntawm aluminium windings yog "yooj yim oxidation + siab kub nce": Nyob rau hauv siab - qhov kub thiab txias ib puag ncig, oxidation tus nqi ntawm aluminium xov hlau nrawm, ua rau muaj kev tiv thaiv kev tiv thaiv thiab kev tiv thaiv kev laus sai; nyob rau hauv tsis tu ncua overload, qhov kub nce ceev, uas tej zaum yuav yooj yim ua rau luv luv -circuit faults. Avoidance Solutions:

Yog hais tias aluminium windings yuav tsum tau xaiv, optimize lub radiator tsim (nce tshav kub dissipation cheeb tsam) thiab nruj me ntsis tswj lub load yam (tsis txhob ntev - lub sij hawm ua hauj lwm tshaj 50% ntawm cov rated load);

Rau siab - kub, av noo, thiab nquag dhau qhov xwm txheej (piv txwv li, cov chaw ua si hauv ntug dej hiav txwv), ua qhov tseem ceeb ntawm tooj liab windings - lawv cov thermal conductivity (401 W / m·K) yog 1.7 npaug ntawm txhuas, nrog rau qhov kub siab tshaj 5-10K qis dua thiab muaj zog tshuaj lom neeg ruaj khov, uas tuaj yeem zam cov teeb meem saum toj no.

 

Q: Dab tsi yog qhov kev xaiv xaiv hauv ntau thaj tsam thoob ntiaj teb?

A: 80% ntawm cov transformers thoob ntiaj teb yog txhuas-core. Russia (85%) thiab Middle East (70%) muaj feem ntau tshaj plaws vim qhov kev thov rau tus nqi qis thiab lub teeb yuag, tom qab ntawd Europe (60%) thiab Asia-Pacific (70%). Tsuas yog 20% ​​ntawm cov tshuab hloov pauv hauv Tebchaws Europe thiab North America siv txhuas cores, nrog rau kev tsom mus rau kev txuag hluav taws xob ntau dua thiab ua haujlwm ntev.

 

Q: Cov phiaj xwm txhawb nqa dab tsi tuaj yeem tau txais los ntawm kev xaiv GNEE ELECTRIC's tooj liab / txhuas-mob transformers? Yuav ua li cas kom tau txais ib qho xwm txheej- hloov kho kev xaiv thiab hais lus?

A: GNEE ELECTRIC muab 2 core guarantees:

Kev lees paub ua raws: Cov transformers ua raws li cov qauv thoob ntiaj teb thoob ntiaj teb thiab ua tau raws li cov ntsiab lus thoob ntiaj teb cov kev qhia tshwj xeeb, ua kom haum rau lub zog tshiab thiab cov kev xav tau txawv teb chaws;

Tom qab-Kev Muag Khoom Muag: 1-2 xyoo lav, nrog rau kev ua haujlwm tshwj xeeb thiab kev saib xyuas kom txo tau cov nqi tshuaj xyuas.