Hauv kev hloov pauv hauv tsev, qhov siab -voltage windings feem ntau txuas nrog Y- txuas. Txoj kev sib txuas rau qhov nruab nrab -voltage thiab low-voltage windings nyob ntawm qhov system tej yam kev mob. Cov kab ke kab ke hais txog kev sib raug zoo ntawm qhov hluav taws xob phasors ntawm high-voltage transmission system thiab voltage phasors ntawm nruab nrab-voltage lossis low-voltage transmission system. Rau qis-voltage faib tshuab, txoj kev sib txuas tuaj yeem txiav txim siab raws li cov txheej txheem kev cai.
High-voltage windings feem ntau txuas rau hauv Y- kev sib txuas vim tias theem voltage tuaj yeem sib npaug li 57.7% ntawm kab hluav taws xob, tso cai rau qhov qis dua ib zaug.
1) Nyob rau hauv domestic 500kV, 330kV, 220kV, thiab 110kV kis tau tus mob systems, lub voltage phasors nyob rau hauv theem. Yog li ntawd, rau peb-theem peb-winding lossis peb-theem autotransformers nrog cov nram qab no voltage piv, ob qho tib si lub siab-voltage thiab nruab nrab-voltage windings yuav tsum tau txuas nrog lub hnub qub configuration. Thaum siv peb theem -theem peb-cov qauv tseem ceeb, qhov qis-voltage winding kuj tseem tuaj yeem txuas rau hauv lub hnub qub lossis delta configuration, nyob ntawm seb qhov hluav taws xob phasors ntawm qhov qis -voltage transmission system yog nyob rau theem nrog lossis lag qhov voltage phasors ntawm nruab nrab {{16}voltage {{16} thiab 10}voltage systems℃hluav taws xob lub kaum sab xis.
500/220/LVkV─YN, yn0, yn0 or YN, yn0, d11
220/110/LVkV─YN, yn0, yn0 or YN, yn0, d11
330/220/LVkV─YN, yn0, yn0 or YN, yn0, d11
330/110/LVkV─YN, yn0, yn0 or YN, yn0, d11
2). Hauv tsev 60kV thiab 35kV kis tau tus mob muaj ob theem sib txawv.
Piv txwv li, 220/60kV transformer siv YNd11 kev sib txuas thiab 220/69/10kV transformer siv YN, yn0, d11 kev sib txuas ua rau 30℃hluav taws xob theem sib txawv ntawm ob lub 60kV kis tau tus mob.
Thaum 220/110/35kV transformers siv YN, yn0, d11 kev twb kev txuas txoj kev, thiab 110/35/10kV transformers siv YN, yn0, d11 kev twb kev txuas, voltage phasors ntawm ob 35kV kis tau tus mob systems kuj txawv los ntawm ib tug hluav taws xob lub kaum sab xis ntawm 30 degree.
Yog li ntawd, txoj kev sib txuas rau 60kV thiab 35kV windings yuav tsum tau ua tib zoo txiav txim siab, thiab txoj kev sib txuas yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm cov kab hluav taws xob qhov hluav taws xob phasors. Txoj kev sib txuas rau 60kV thiab 35kV windings yog txiav txim siab raws li kev sib raug zoo ntawm cov hluav taws xob phasors. Txwv tsis pub, txawm tias qhov muaj peev xwm thiab qhov sib piv voltage yog qhov tseeb, lub transformer siv tsis tau; Yog tias txoj kev sib txuas tsis raug, lub tshuab hloov pauv tsis tuaj yeem txuas nrog cov kab ke sib kis.
3) Hauv tsev 10kV, 6kV, 3kV, thiab 0.4kV kis tau tus mob thiab faib tshuab kuj muaj ob theem hauv lawv cov phasors. Nyob rau hauv cheeb tsam Shanghai, muaj 10kV thiab 110kV kis tau tus mob system nrog ib tug voltage phasor txawv ntawm 60 degree. Nyob rau hauv cov ntaub ntawv no, ib tug peb-theem, peb- winding fais fab transformer nrog ib tug 110/35/10kV voltage ratio thiab ib tug YN, yn0, y10 kev twb kev txuas yuav siv tau, tab sis nws yog txwv rau ib tug peb-theem, peb-core kem- hom tub ntxhais.
4) Txawm li cas los xij, nws yuav tsum raug sau tseg tias: thaum ib qho -theem transformer txuas rau hauv peb pawg -theem, kev sib txuas YNy0 tsis tuaj yeem siv. Peb -theem plhaub- hom transformers kuj siv tsis tau YNy0 kev twb kev txuas.
Thaum peb -theem, tsib-limb core transformer yuav tsum siv YN, yn0, yn0 kev twb kev txuas, yuav tsum muaj plaub winding txuas nyob rau hauv lub kaum sab xis configuration nyob rau hauv lub transformer. Nws cov hlau lead-tawm lub davhlau ya nyob twg tsis raug coj tawm (cov hlau lead- tawm cov terminals rau kev kuaj hluav taws xob yog qhov tshwj xeeb).
5) Thaum transformers nrog cov pab pawg sib txawv sib txuas ua ke, txoj cai dav dav yog qhov kev sib txuas ntawm pawg yuav tsum yog tib yam.
6) Thaum cov khoom siv hluav taws xob faib khoom siv rau hauv thaj chaw muaj kev sib tsoo, Yzn11 txoj kev sib txuas tuaj yeem siv tau. Thaum siv z- txoj kev sib txuas, qhov kev sib txuas ntawm qhov hluav taws xob impedance txawv ntawm Yyn0 txoj kev sib txuas, thiab kev siv tooj liab ntawm cov windings hauv z- txoj kev sib txuas yog siab dua. Distribution transformers nrog Yzn11 kev twb kev txuas txoj kev muaj kev tiv thaiv zoo dua xob laim.
7) Txoj kev sib txuas YNy0 tsis tuaj yeem siv thaum peb -theem transformer siv plaub lub qhov txhab cores.
8) Cov saum toj no yog txoj kev sib txuas siv rau kev hloov pauv hauv tsev. Rau kev xa tawm, txoj kev sib txuas tsim nyog thiab kev sib txuas pab pawg tsim nyog yuav tsum tau muab raws li qhov xav tau.
9) Feem ntau, muaj cov kais dej txuas nrog cov kais hloov pauv hauv qhov siab -voltage windings. Yog li ntawd, thaum xaiv tus kais hloov pauv (xws li ntawm -load kais hloov pauv thiab tawm-load kais hloov pauv), nws yog ib qho tseem ceeb kom ntseeg tau tias kev sib raug zoo ntawm txoj kev sib txuas ntawm lub tshuab hluav taws xob thiab cov kais hloov pauv txoj kev sib txuas (nrog rau txoj kev sib txuas, ntsuas qhov ntsuas hluav taws xob, ntsuas tam sim no, qhov hluav taws xob ib theem, kev tswj hluav taws xob ntau, thiab lwm yam). Rau ntawm -load kais hloov pauv siv hauv YN- txuas rau ntawm -load kais hloov pauv, nws tseem ceeb heev kom ntseeg tau tias qhov nruab nrab tuaj yeem coj tawm.
