Voltage Regulation ntawm Transformer

 

Lub transformer xav tau kev tswj hwm qhov hluav taws xob feem ntau vim tias qhov hloov pauv ntawm daim phiaj hluav taws xob thiab kev hloov pauv yuav ua rau qhov tsis muaj zog ntawm cov hluav taws xob theem nrab, yog li cuam tshuam rau kev ua haujlwm ntawm cov khoom siv hluav taws xob, lub hom phiaj ntawm kev tswj hluav taws xob yog kom stabilize cov zis voltage.

 

• Cov nyhuv ntawm qhov hloov pauv voltage

• Qhov hluav taws xob hauv kab sib chaws tsis tas li thiab yuav hloov pauv vim muaj ntau yam (xws li qhov ntev ntawm cov kab xa khoom, kev hloov pauv ntawm cov khoom siv hluav taws xob, thiab lwm yam). Qhov kev hloov pauv no yuav ua rau qhov voltage ntawm ob sab ntawm lub tshuab hloov pauv hloov, yog tias qhov hluav taws xob siab lossis qis, nws yuav ua rau cov khoom siv hluav taws xob puas tsuaj lossis ua rau nws tsis tuaj yeem ua haujlwm li qub.

• Kev cuam tshuam ntawm kev hloov pauv

• Ntau qhov sib txawv ntawm qhov sib txawv thiab cov khoom siv hluav taws xob txuas nrog rau sab thib ob ntawm lub tshuab hloov pauv kuj tseem yuav ua rau muaj kev hloov pauv hauv qhov nruab nrab voltage. Piv txwv li, yog hais tias lub load nyob rau hauv ib qho chaw dheev nce, thiab cov zis voltage ntawm lub transformer yog tsis kho raws li, lub voltage nyob rau hauv lub cheeb tsam yuav poob, cuam tshuam rau cov kev ua hauj lwm ntawm cov khoom.

 

 

2.1 Kev txhais

• Voltage regulation range yog hais txog qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus voltage qhov tseem ceeb uas lub transformer tuaj yeem hloov kho raws li nws qhov ntsuas voltage, feem ntau qhia raws li feem pua. Los ntawm kev hloov txoj hauj lwm ntawm tus kais-changer, lub transformer tuaj yeem kho qhov hluav taws xob nyob rau hauv lub teeb hluav taws xob tswj ntau yam kom tau raws li qhov xav tau ntawm lub zog hluav taws xob lossis kev thauj khoom.

 

2.2 Kev nthuav qhia hom

• Tus neeg sawv cev feem pua

Qhov voltage ntau yog feem ntau qhia raws li feem pua ​​​​ntawm cov ntsuas hluav taws xob. Piv txwv li, kev tswj qhov hluav taws xob ntau ntawm ± 2 * 2.5% txhais tau hais tias qhov hluav taws xob ntawm lub tshuab hluav taws xob tuaj yeem nce lossis txo los ntawm 5% ntawm nws qhov ntsuas hluav taws xob,

• Tus naj npawb ntawm cov kais dej

Cov haujlwm sib txawv ntawm tus kais hloov pauv sib haum rau qhov sib txawv ntawm qhov sib txawv, thiab txhua txoj haujlwm yog hu ua Kais. Qhov ntau ntawm cov kev cai voltage yog txiav txim los ntawm qhov chaw ntawm cov kais dej no.

• Tus nqi tshwj xeeb voltage

Qhov voltage ntau kuj tuaj yeem qhia los ntawm tus nqi tshwj xeeb voltage. Piv txwv li, lub transformer nrog lub ntsuas hluav taws xob ntawm 110kV tuaj yeem hloov kho ntawm 99kV thiab 121kV yog tias qhov ntsuas hluav taws xob ntau yog ± 10%.

 

 

Saum toj no

Cov kauj ruam loj ntawm txhua lub iav (kais) yog 2.5%, nrog rau cov ntsuas iav (9th iav) raws li cov iav thawj zaug, mus rau qhov zoo 8 iav, 2.5% ib iav, rau qhov tsis zoo 8 iav, 2.5% ib iav, tag nrho ntawm 17 iav, tag nrho cov kev cai voltage ntawm ± 10%, sau li ± 8 * 1.25%

 

 

3.1 Tsis muaj-Load Voltage Regulation (NLTC)

Txhais

Yuav kom haum rau kev kho kais-changer thaum lub transformer tsis nyob. Txoj kev tswj hwm qhov hluav taws xob no yuav tsum tau ua thaum ob qho tib si thawj thiab theem nrab ntawm lub transformer raug txiav tawm ntawm daim phiaj.

English npe

Tsis muaj load tap changer (NLTC)

Off-circuit tap changer (OCTC)

De-energized tap changer (DETC)

Voltage tswj ntau yam

Kev tswj tsis pub muaj hluav taws xob dav dav yog ± 2 * 2.5%, 5 qib

 

 

3.2 Ntawm Load tap changer (OLTC)

Txhais

On-load voltage regulation yog ib txoj kev tswj qhov hluav taws xob uas tuaj yeem hloov qhov hluav taws xob los ntawm kev hloov cov kais iav thaum lub transformer khiav hauv qab load.

Lub npe Askiv:

On-load tap changer (OLTC)

Load tap changer (LTC)

Voltage tswj ntau yam

Qhov ntau yog qhov loj, xws li ± 8 * 1.25%, 17 iav siab hloov, lossis loj dua, xws li 21 iav

 

3.3 Cheebtsam ntawm on-load hloov

Hloov lub cev

• Nyob rau hauv lub tank, txuas winding rau kev tswj siab

Hom

Roj immersed hloov (Oil type)

•Oil-immersed on-load regulator siv roj transformer li rwb thaiv tsev thiab arc extinguishing nruab nrab. Thaum qhov hloov pauv hloov tus kais dej, cov roj raug tua los ntawm cov txheej txheem ntawm lub cev thiab tshuaj.

• Tus nqi pheej yig, domestic txog 6W, xws li Shanghai Huaming, tuaj yeem yog 5-6 npaug ntawm tus nqi, xws li lub teb chaws Yelemees MR, Sweden ABB thiab lwm yam

Lub tshuab nqus tsev vacuum (nqus hom)

• Nqus on-load voltage regulator siv lub tshuab nqus tsev vacuum interrupter. Thaum hloov cov kais dej, lub arc raug tua sai sai hauv qhov chaw nqus tsev.

• Tus nqi siab, domestic txog 21W, xws li Shanghai Huaming, imported tej zaum yuav yog 5-6 lub sij hawm tus nqi, xws li lub teb chaws Yelemees MR, Sweden ABB thiab hais txog

 

 

Tsav Tsav Tsheb

• Nws yog lub luag haujlwm rau kev tsav tsheb mus ua kom tiav qhov kev hloov ntawm tus kais dej. Lub tshuab hluav taws xob yog tsim los ntawm cov motors, gear drives, tswj systems, thiab lwm yam, kom ua tiav cov kev tswj hauv zos thiab cov chaw taws teeb tswj.

• Lub cev muaj zog voltage: ntau 400VAC, kuj yog lwm yam, raws li cov neeg siv khoom xav tau

 

 

AVR (Tsis Siv Neeg Voltage Regulator)

AVR kuaj pom qhov sib txawv ntawm qhov tso zis hluav taws xob thiab qhov teeb tsa tus nqi thiab tuaj yeem kho qhov excitation tam sim no lossis kais txoj haujlwm kom tswj tau qhov kev ruaj ntseg ntawm cov zis hluav taws xob.

 

 

Tej thaj chaw deb transformer tswj txee (RTCC)

Kev saib xyuas tej thaj chaw deb ntawm transformer siab, kub, roj relays thiab lwm yam teeb liab raws li kev cai voltage