Kev xaiv ntawm Tam sim no Transformer thiab Zero Sequence Tam Sim No Transformer

Tam sim no transformers thiab xoom-sequence tam sim no transformers yog tag nrho cov saib xyuas ntawm cov feem ntau txhaum tam sim no ntawm txoj kev. Feem ntau, tsuas muaj ib qho transformer core thiab theem nrab winding. Thaum ua ntawv thov, peb-core cable yuav hla lub qhov rais tseem ceeb ntawm lub transformer, thiab lub thib ob kis tau tus mob kab yuav txuas nrog tshwj xeeb-lub hom phiaj automotive relay raws li cov kis kab mob, thiab ces cov zis ntawm lub tsheb relay yuav txuas nrog. cov ntaub ntawv teeb liab khoom siv los yog tswb. Raws li ib txwm muaj, peb-theem voltage hauv paus hauv thawj lub zog hluav taws xob yog sib npaug thiab cov flux generated kuj ze rau xoom. Tsis muaj induced electromotive quab yuam nyob rau hauv lub thib ob winding ntawm lub transformer. Thaum qhov kev ua txhaum ntawm ib-theem grounding tshwm sim nyob rau hauv lub hauv paus thiab nruab nrab fais fab mov Circuit Court, nws yuav ua rau unbalanced tam sim no (xws li zero sequence tam sim no) nyob rau hauv lub thawj thiab nruab nrab lub hwj chim Circuit Court, thiab yuav ua rau ib tug me me tam sim no nyob rau hauv lub thib ob winding. Tsheb relay posture, cov ntaub ntawv teeb liab tshwm. Tus nqi tam sim no (mA qib) hauv kev ua haujlwm ntawm lub tsheb relay tsis loj, uas yog hu ua theem nrab coil tam sim no tus nqi lossis qhov rhiab heev ntawm xoom-sequence tam sim no transformer (tseem qhia los ntawm lub cev me me tam sim no), uas yog Qhov taw qhia tseem ceeb Posture. Nyob rau hauv 10kV feeder switchgear, tam sim no transformers nyob rau hauv lub hwj chim hloov feem ntau muab faib ua ob-theem los yog peb-theem.

Tam sim no transformer yog tsim los ntawm thawj thiab theem nrab windings (L1, L2) thiab theem nrab windings, transformer core thiab silica gel. Tam sim no Transformer Tam sim no transformer yog ib tug me me tam sim no, uas hloov cov thawj thiab nruab nrab machinery thiab cov khoom ntawm cov loj tam sim no mus rau hauv lub thib ob coil machinery thiab khoom siv. Nws lub hauv paus ntsiab lus yog sib npaug rau lub transformer nrog me me yam ntxwv impedance. Lub hauv paus thiab theem nrab windings yog txuas nrog cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob thib ob, thiab cov windings thib ob yog txuas nrog cov khoom thauj. Qhov kev faib ua feem ntawm tam sim no transformer feem ntau yog X / 5A lossis X / 1A (X tsis qis dua qhov loj lub sij hawm thauj khoom tam sim no uas yuav tshwm sim hauv cov tshuab thiab cov khoom siv), yog li qhov thib ob kauj tam sim no ntawm qhov tam sim no transformer tsis tshaj. 5A los yog 1A. Hauv cov chaw nres tsheb fais fab thiab cov chaw nres tsheb, yog tias cov khoom siv hluav taws xob high-voltage substation tshem tawm chav tswj lub ntsiab, txhawm rau txhawm rau txhawm rau nce qhov tso cai ntawm cov kauj ruam thib ob ntawm lub converter, thov txo cov hlau qhov (socket) ntawm cov txuas txuas thiab txhim kho qhov tseeb, thiab xaiv qhov ntsuas thib ob coil. Qhov hluav taws xob. Nws yog 1A tam sim no transformer. Raws li txoj cai, cov cuab yeej tiv thaiv microcomputer yuav tsum tau siv rau cov khoom siv nrog AC voltage ntawm 1A.

Nyob rau hauv qhov chaw nres tsheb, qhov tam sim no transformer yog siv nyob rau hauv peb lub hwj chim circuits: microcomputer tiv thaiv, kev ntsuas qhov tseeb thiab ntsuas qhov tseeb, thiab peb lub zog hluav taws xob muaj cov kev xav tau sib txawv rau qhov tseeb ntawm qhov tam sim no transformer. Raws li qhov tseeb, winding tsis kam ntawm tam sim no transformer tuaj yeem muab faib ua 10P10 (kev tu), 0.5 (qhov tseeb ntsuas) thiab 0.2S ( ntsuas ntsuas). Lub winding siv rau kev ntsuas kom raug thiab ntsuas ntsuas ntsuas ntsuas qhov tseeb, thiab cov winding siv rau kev saib xyuas tsom mus rau qhov ntim, thiaj li tiv thaiv lub xeev saturation ntawm transformer core los ntawm kev ua phem rau cov kev faib ua feem. Muaj peb hom kev xaim rau qhov thib ob winding ntawm tam sim no transformer: ua tiav lub hnub qub kev twb kev txuas, tsis tiav lub hnub qub kev twb kev txuas thiab delta kev twb kev txuas.