2500kVA Roj-immersed Transformer: On-load Tap Changer VS Off-Circuit Kais Changer

NtawmHenan GNEE Electric Co., Ltd., peb tau raug tsim thiab muab siab - roj zoo- immersed transformers rau cov neeg siv khoom thoob ntiaj teb rau ntau dua 18 xyoo.

 

Peb cov roj 2500kVA-immersed transformer khoom kab ua haujlwm rau ntau yam kev siv xws li kev lag luam hluav taws xob, kev siv hluav taws xob txuas ntxiv (BESS/Battery Energy Storage Systems), EV charging infrastructure, Bitcoin mining chaw, thiab chaw ua lag luam.

 

Seb koj xav tau ib qhontawm -load tap changer (OLTC)rau dynamic voltage kev cai los yog iboff-circuit (tsis muaj-load) tap changerrau daim phiaj kev ruaj ntseg, GNEE muab kev cai - engineering kev daws teeb meem uas ua tau raws li IEC, IEEE, CSA, UL, thiab CE thoob ntiaj teb cov qauv

 

• Ntawm -load tap changer: Kho qhov hluav taws xob kais dej yam tsis muaj hluav taws xob txiav, zoo tagnrho rau thaj chaw uas muaj qhov hloov pauv tsis tu ncua.
• Tawm -circuit (tsis muaj-load) kais hloov pauv: Kais kev hloov kho yuav tsum muaj hluav taws xob hluav taws xob, haum rau cov chaw uas muaj hluav taws xob ruaj khov.

 

 

Sib piv Aspect	Ntawm -load Tap Changer (OLTC)	Tawm -Circuit Tap Changer (OCTC)
Coj mus rhaub hloov yuav tsum tau	Ua haujlwm thaum energized nyob rau hauv tag nrho load	Yuav tsum tau transformer de{0}}energized (fais fab tuag)
Lub zog cuam tshuam	Tsis muaj kev cuam tshuam	Tag nrho qhov hluav taws xob xav tau rau txhua qhov kev hloov kho
Zoo tagnrho rau	Tsis tshua muaj voltage fluctuations (txhua hnub / teev variations)	Daim phiaj ruaj khov (tsuas yog hloov kho raws caij nyoog / ib xyoos nkaus xwb)
Hom kais dej num	5-35 kauj ruam (± 5% txog ± 20% ntau yam)	3-5 txoj haujlwm (± 5% ntau yam)
Txoj kev cai	Tsis siv neeg (AVR maub los) lossis phau ntawv	Phau ntawv nkaus xwb (thaum lub sijhawm teem sijhawm)
Winding qhov chaw	Siab -V voltage (tsawg dua tam sim no)	Siab -voltage sab
Hloov cov khoom siv	Diverter hloov + coj mus rhaub selector + hloov pauv resistors	Direct contact switch (tsis muaj kev cuam tshuam kev thauj khoom)
Arc tswj	Arcing hu rau hauv cov roj los yog lub tshuab nqus tsev chamber	Tsis muaj arcing (ua haujlwm de-energized)
Kev tu kom yooj yim	High (hu rau hnav, roj lim, tsav mechanism)	Tsawg (tsuas yog kuaj pom)
Tus nqi pib (2500kVA)	$$ – Siab dua	$ – qis (kwv yees . 2/3 ntawm OLTC)
Lifecycle nqi	Siab dua vim kev kho thiab hloov roj	qis
Tej kev siv	Utility substations, industrial variable loads, EV fleets, txuas txuas ntxiv mus	Nyob deb nroog, cov tsev lag luam, cov tshuab thaub qab, cov khoom noj khoom haus ruaj khov
Kev cuam tshuam tsis tiav	Txog li 1/3 ntawm kev hloov pauv tsis ua haujlwm cuam tshuam nrog OLTC teeb meem	Tsawg heev (passive tivthaiv)
Automation muaj peev xwm	Yog (qhov chaw taws teeb / tsis siv neeg kais hloov)	Tsis yog (yuav tsum tau kho manually offline)

 

 

Grid voltage tsis tas li. Kev cuam tshuam los ntawm kev hloov pauv thiab kab hluav taws xob poob, qhov hluav taws xob ntawm tus neeg siv kawg yuav siab dhau lossis qis dhau. Kev tswj hluav taws xob hloov kho qhov sib piv ntawm qhov hloov pauv windings kom cov zis hluav taws xob nyob rau hauv qhov tsim nyog ntau yam (xws li . 380V ± 5%).

 

• Tawm -Circuit tap changerZoo tagnrho rau cov chaw uas tsis tu ncua voltage txhua xyoo puag ncig thiab tsis tshua muaj kais hloov kho. Nws yog dav siv nyob rau hauv feem ntau factories thiab nyob rau hauv lub hwj chim faib. Cov kais dej tau teeb tsa ua ntej xa hluav taws xob thiab tsis hloov pauv thaum ua haujlwm.
• Ntawm -load tap changerMuaj feem xyuam rau cov xwm txheej uas nquag niaj hnub hloov pauv, xws li dov mills, calcium carbide furnaces thiab chaw them nqi. Nws tuaj yeem txhim kho qhov hluav taws xob nyob rau lub sijhawm tiag tiag rau cov chaw uas muaj qhov sib txawv loj ntawm qhov kawg ntawm cov kab hluav taws xob.

 

 

Thaum xaiv ib qhontawm -load tap changerthiab ibtawm -Circuit tap changerrau koj2500kVA roj-immersed transformer, xav txog lub hauv paus kev txiav txim siab hauv qab no:

 

✅ Xaiv Ntawm -load Tap Changer (OLTC) yog:

• Voltage fluctuates nquag- Koj lub vev xaib muaj kev hloov pauv txhua hnub lossis ib teev twg vim muaj kev lag luam hnyav, kev tsim txuas ntxiv txuas ntxiv, lossis tsis muaj zog daim phiaj.
• Kev poob qis yog kim- Kev cuam tshuam fais fab rau kev hloov kais yuav ua rau cov khoom poob, khoom siv puas tsuaj, lossis kev pabcuam - ua txhaum theem.
• Koj xav tau kev tswj tsis siv neeg voltage- Lub transformer yuav ua haujlwm nyob rau hauv lub chaw nres tsheb tsis muaj neeg tsav tsheb nrog AVR tswj yuav tsum tau hloov pauv chaw taws teeb.
• Load profile yog dynamic- EV charging chaw nres tsheb, cov chaw khaws ntaub ntawv, lossis lub cev muaj zog loj -tsav chaw nrog cov viav vias tseem ceeb.
• Lub zog zoo yog qhov tseem ceeb- Cov khoom siv kho mob rhiab heev, kuaj, lossis cov khoom siv hluav taws xob semiconductor yuav tsum muaj kev tiv thaiv nruj.

 

✅ Xaiv Tawm -Circuit Tap Changer (OCTC) yog:

Grid voltage yog ruaj khov- Cov khoom siv hluav taws xob tseem nyob hauv qhov kev txwv uas tau txais feem ntau ntawm lub xyoo (ib txwm rau qhov zoo -tsim kev sib faib hauv nroog).

• Kev hloov kho tsis tshua muaj- Kais hloov pauv tsuas yog thaum pib ua haujlwm, hloov pauv raws caij nyoog, lossis kev npaj kho (ib zaug lossis ob zaug hauv ib xyoos).
• Nyiaj txiag yog qhov kev txwv tseem ceeb- Kev siv peev nyiaj pib yuav tsum tau txo qis; OLTC sawv cev rau 30-50% tus nqi siab dua.
• Kev ua haujlwm yooj yim dua yog nyiam- Tsis xav tau cov neeg ua haujlwm cob qhia los ua haujlwm lossis tswj cov txheej txheem hloov pauv.
• Daim ntawv thov zam qhov kev npaj tawm- Muaj kev ua haujlwm siab hloov pauv lossis cov tshuab thaub qab uas tau teem sijhawm lub zog cuam tshuam tau txais.

 

 

❌ "Ntawm -load kais hloov pauv tuaj yeem hloov kho ntau zaus."

✅ Txawm hais tias nws ua haujlwm hauv qhov hnyav, lub sijhawm hloov kho txhua hnub yog txwv (ib txwm tsis pub tshaj 20 zaug hauv ib hnub). Kev ua haujlwm ntau dhau yuav ua rau kom hnav ntawm tus kais hloov pauv.

 

❌ "Tawm-cov kais dej hloov pauv tuaj yeem hloov kho thaum lub sijhawm ua haujlwm."

✅ Tsis yog lawm! Hom kais hloov pauv no tsis muaj arc -extinguishing muaj peev xwm. Kev ua haujlwm nyob yuav ua rau hluav taws xob arc, hlawv tawm lub cuab yeej thiab tseem ua rau tawg.

 

Tau txais Daim Ntawv Qhia Txog Tus Kheej los ntawm GNEE Hnub no

 

Xaiv txoj cai kais hloov pauv rau koj2500kVA roj-immersed transformeryog qhov kev txiav txim siab tseem ceeb hauv engineering uas cuam tshuam rau koj cov peev peev thiab cov nqi ua haujlwm ntev -.

 

Seb koj xav tau dynamic voltage tswj nrog ibntawm -load tap changerlos yog tus nqi -kev daws teeb meem zoo nrog ib qhooff-circuit (tsis muaj-load) tap changer, GNEE pab pawg engineering yuav pab koj txheeb xyuas qhov kev pom zoo raws li koj daim phiaj xwm txheej, thauj khoom profile, thiab kev xav tau nyiaj txiag.

 

👉 Tiv tauj peb tam sim no- Xa koj cov kev xav tau (piv txwv / theem nrab voltage, zaus, load yam ntxwv, nyiam kais hloov hom) thiab tau txais cov lus sib tw hauv 24 teev. GNEE muab cov kev daws teeb meem txhim khu kev qha los hloov koj lub zog infrastructure!