Kev ntsuas qhov sib piv, polarity, thiab impedance yog muab piv nrog cov ntaub ntawv npe los txheeb xyuas lawv qhov tseeb thiab xyuas kom meej tias tsis muaj kev puas tsuaj rau cov khoom xa tuaj, qhov kev sib txuas ntawm lub tshuab hluav taws xob yog qhov tseeb, thiab lub tshuab hloov pauv tau npaj txhij rau kev pabcuam. Tsis tas li ntawd, cov ntaub ntawv ntsuam xyuas cov ntaub ntawv no dhau los ua cov cuab yeej muaj txiaj ntsig thaum piv nrog cov kev kuaj mob tom qab siv los ntsuas qhov kev hloov pauv hloov.
Cov txheej txheem kev sim ib zaug tuaj yeem siv los ntsuas qhov piv thiab impedance ntawm ob-winding transformers, peb-winding transformers, autotransformers, thiab peb-theem transformers. Ntxiv mus, nyob rau hauv cov ntaub ntawv ntawm peb-theem transformers (nrog ib tug Wye kev twb kev txuas) thiab grounding banks, xoom-sequence impedance ntsuas yog ua nrog rau ib tug-theem txheej txheem. Kev sib piv ntawm kev ntsuas yog qhov muaj txiaj ntsig zoo thaum cov kev sim ib-theem tau ua rau peb lub tshuab hloov pauv zoo ib yam lossis ntawm txhua theem ntawm peb-theem transformer, vim nws tsis zoo li tias txhua theem ib-theem lossis txhua theem ntawm peb-theem transformer yuav muaj kev txhawb nqa. tib yam kev puas tsuaj.
Yog tias cov khoom siv terminals tuaj yeem siv tau lossis yog lub tsheb npav txuas nrog lub tshuab hluav taws xob sib txuas, xav tau hloov cov peev txheej sim mus rau lwm qhov chaw, laj kab tawm ntawm thaj chaw muaj kev tiv thaiv raws li qhov xav tau los ntawm cov txheej txheem kev nyab xeeb, ceeb toom cov neeg ua haujlwm ntawm qhov kev sim ua kom muaj zog, thiab yog tias tsim nyog muab Tus Saib Xyuas Kev Nyab Xeeb. Yog tias ua tau, piv txwv ntsuas transformers ua ntej kev sib txuas ntawm cov tsheb npav tau ua.
IB QHOV POLARITY
Lub polarity designation ntawm txhua transformer winding yog txiav txim los ntawm tus txheeb ze kev taw qhia ntawm instantaneous tam sim no los yog voltage raws li pom nyob rau hauv lub transformer terminals. Piv txwv li, thawj thiab theem nrab cov thawj coj tau hais tias muaj tib lub polarity thaum, ntawm qhov muab tam sim no, tam sim no nkag mus rau hauv thawj cov lus nug, qhov tam sim no induced voltage nyob rau hauv theem nrab yog nce thaum lub impressed voltage ntawm thawj yog nce, los yog conversely. , yog tias lawv ob leeg txo qis ntawm tib lub sijhawm.
Transformer polarity hais txog yuav ua li cas winding leads raug coj tawm mus rau bushing terminals. Cov kev sib txuas no yog txiav txim siab los ntawm kev tsim qauv ntawm transformer, winding cov lus qhia thiab cov hauv paus ntsiab lus clearance. Transformer polarity yog rho tawm lossis ntxiv. Yog hais tias lub instantaneous polarity (raws li tau hais los saum toj no) ntawm cov terminals nyob ib sab yog tib yam, transformer polarity yog rho tawm.Yog hais tias diagonally opposite terminals ntawm ib tug transformermuaj tib yam tam sim no polarity, transformer polarity yog additive.
Transformer winding polarity qhov chaw yog qhov tseem ceeb thaum zoo tib yam windings ntawm lub transformer yuav tsum tau mus ua ke, thaum paralleling transformers nrog zoo tib yam ratios thiab voltage ratings, thaum txiav txim siab peb-theem kev sib txuas ntawm transformers, thiab tsim kom muaj kev sib raug zoo rau peb-theem transformers uas ua hauj lwm nyob rau hauv. parallel nrog lub zog system. Polarity ntawm transformer windings yuav txiav txim los ntawm kev sib piv nrog ib tug transformer paub polarity, DC flashing los yog AC txoj kev. Tsuas yog ob txoj kev tom kawg yog siv los ntawm TNE.