Zero Sequence Tam sim no Transformer

Cov khoom siv hauv kev lag luam hluav taws xob. Zero-sequence tam sim no transformer yog ib-tig los ntawm-core tam sim no transformer, uas feem ntau yog siv nyob rau hauv lub hwj chim tiv thaiv cov cuab yeej xws li: me me tam sim no grounding kab xaiv ntaus ntawv, microcomputer detuning ntaus ntawv thiab lwm yam kev txhawb nqa siv. Lub xoom-sequence tam sim no transformer yog siv nrog lub relay tiv thaiv ntaus ntawv los yog teeb liab thaum lub zero-sequence av tam sim no yog generated nyob rau hauv lub hwj chim system los ua kom cov cuab yeej cov khoom ua kom tiav kev tiv thaiv los yog saib xyuas.

Thaum muaj hluav taws xob poob siab lossis qhov ua txhaum tawm hauv lub voj voog, qhov thib ob ntawm lub transformer outputs xoom-sequence tam sim no los tiv thaiv cov cuab yeej ntawm cov kab txuas txuas ntxiv.

Zero-sequence tam sim no transformer yog siv los txheeb xyuas xoom-sequence tam sim no, yog li nws tuaj yeem hu ua xoom-sequence tam sim no lim, nws cov qauv zoo ib yam li cov qauv tam sim no ntawm cov tub ntxhais transformer, tshwj tsis yog tias nws cov thawj winding yog cov hlau ntawm peb theem. lub kaw lus tiv thaiv, thiab qhov thib ob winding reacts rau xoom-sequence tam sim no ntawm thawj qhov system.

Nyob rau hauv nruab nrab point tsis ncaj qha grounded system, lub xoom-sequence tam sim no transformer thiab lub grounding relay ua ib tug ib-theem grounding tiv thaiv ntaus ntawv. Thaum lub sij hawm ib txwm ua hauj lwm ntawm lub system, lub vector sum ntawm peb-theem tam sim no dhau los ntawm thawj sab ntawm lub zero-sequence tam sim no transformer yog xoom, uas yog, Ia + Ib + Ic=0. Lub sijhawm no, qhov xoom-ib theem tam sim no transformer nyob rau hauv lub xeev tsis ua hauj lwm, thaum ib theem av txhaum (xws li A theem) tshwm sim, Ia+Ib+Ic=3Ioc, 3Ioc yog sib npaug rau cov vector sum ntawm av capacitance tam sim no ntawm theem B thiab theem, thiab xoom-sequence magnetic flux tshwm nyob rau hauv cov tub ntxhais, uas induces electromotive quab yuam nyob rau hauv lub thib ob winding, thiab cov theem nrab tam sim no ntws los ntawm lub grounding relay ua rau nws ua hauj lwm.

Cias muab tso, xoom-sequence tam sim no transformer yog siv nrog ib tug relay tiv thaiv ntaus ntawv los yog teeb liab ntaus ntawv thaum lub zero-sequence av tam sim no yog generated nyob rau hauv lub hwj chim system, thiaj li hais tias tus ntaus ntawv Cheebtsam yuav paub txog kev tiv thaiv los yog saib xyuas muaj nuj nqi.

Cim npe nrov: Suav teb xoom sequence tam sim no transformer, Tuam Tshoj xoom sequence tam sim no transformer manufacturers, lwm tus neeg, Hoobkas