Lub hauv paus ntsiab lus ntawm xoom ntu kev tiv thaiv tam sim no yog ua raws Kirchhoff' txoj cai tam sim no: cov lej sib npaug ntawm qhov nyuaj tam sim no ntws mus rau ib qho ntawm qhov hauv Circuit Court yog sib npaug. Hauv qhov xwm txheej ib txwm muaj ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, cov vector vector ntawm cov dej tam sim no ntawm txhua theem sib npaug rau xoom. Yog li ntawd, qhov thib ob winding ntawm xoom-ntu tam sim no transformer tsis muaj lub teeb liab tso tawm, thiab tus actuator tsis ua haujlwm. Thaum qhov ua txhaum tshwm sim, cov lej vector ntawm cov dej ntws ntawm txhua ntu tsis yog xoom. Tus nqi tam sim no ua rau cov hlau nplaum sib nqus tau tsim nyob rau hauv lub nplhaib tseem ceeb ntawm xoom-ib theem zuj zus tam sim no hloov pauv. Qhov ua kom muaj qhov hluav taws xob ntawm ob sab ntawm xoom-ntu ntu tam sim no hloov pauv ua rau tus neeg ua haujlwm ua haujlwm Cov cuab yeej hla tau hloov lub zog hluav taws xob network kom ua tiav lub hom phiaj ntawm kev tiv thaiv kev ua txhaum hauv av.
Zero-sequence tam sim no hloov pauv muaj nuj nqi: Thaum hluav taws xob poob lossis xau ua txhaum tshwm sim hauv kab, kev tiv thaiv yuav ua thiab lub hwj chim yuav raug txiav tawm. Thaum lub sijhawm ua haujlwm, teeb tsa lub tshuab hluav taws xob tam sim no ntawm txhua txoj kab peb-theem, lossis peb-theem cov xov hlau yuav dhau los ntawm xoom-ntu ntu tam sim no hloov pauv ua ke, lossis teeb tsa xoom-ntu ntu tam sim no hloov pauv ntawm kab nruab nrab N, thiab siv nws txhawm rau txheeb xyuas peb theem The vector sum of the amount of current.
Hauv peb-theem plaub-xaim hluav taws xob, phasor sum ntawm peb theem tam sim no sib npaug rau xoom, uas yog, Ia + Ib + IC=0. Yog tias lub tshuab hluav taws xob tam sim no txuas nrog peb-theem plaub-xaim, qhov ua rau tam sim no yog xoom ntawm lub sijhawm no. Thaum muaj hluav taws xob raug xwm txheej lossis ua txhaum qhov tsis txaus hauv lub Circuit Court, muaj qhov xau tam sim no hauv lub voj. Lub sijhawm no, phasor sum ntawm peb-theem tam sim no hla kev hloov pauv tsis sib npaug rau xoom, thiab cov lej phasor yog: Ia + Ib + Ic=I (Cov dej xau tam sim no)
Nyob rau hauv txoj kev ntawd, muaj qhov ua kom muaj qhov hluav taws xob hauv theem ob lub tshuab hluav taws xob sib nqus ntawm lub tshuab hluav taws xob. Qhov ntsuas hluav taws xob ua haujlwm no tau siv rau kev ua haujlwm ntawm lub zog ntawm ib feem ntawm cov cuab yeej hluav taws xob kom raug sim. Piv nrog rau qhov tshwj xeeb lub cev tam sim no ntawm cov cuab yeej siv hauv qhov tshwj xeeb, yog tias nws tshaj li lub cev tam sim no, txawm tias lub tsheb ntse siv lub cev rov ua haujlwm, Cov nyhuv yog siv cov khoom pov tseg. Lub tshuab hluav taws xob txuas nrog ntawm no hu ua xoom-ib theem tam sim no hloov pauv. Phasor sum ntawm peb-theem tam sim no tsis sib npaug rau xoom, thiab qhov tshwm sim tam sim no yog xoom-ntu ntu tam sim no.
Peb-theem cov kab sib kis ntawm thawj sab ntawm xoom-ntu tam sim no hloov pauv hla cov hlau hlau, thiab cov kauj thib ob tau raug mob ntawm cov hlau hlau. Raws li qhov xwm txheej ib txwm muaj, vim tias peb-theem tam sim no ntawm thawj sab ntawm lub tshuab hluav taws xob tam sim no yog sib npaug thiab cov duab vector yog xoom, cov hlau nplaum sib nqus tsis yooj yim rau hauv cov hlau hlau, thiab tsis muaj tam sim no hauv cov theem thib ob. Thaum lub kaw lus muaj teeb meem hluav taws xob luv, tag nrho ntawm peb theem tam sim no tsis sib npaug rau xoom, thiab xoom-ntu sib nqus sib nqus tshwm sim hauv cov hlau hlau. Cov hluav taws xob sib nqus ua rau muaj peev xwm hluav taws xob ntawm theem ob lub tshuab hluav taws xob sib nqus, thiab qhov tam sim no theem nrab dhau los ntawm lub tsheb xa mus kom nws ua.
Tus hloov pauv tam sim no thiab kev tiv thaiv kev xau tawm ua rau muaj kev xau thiab tiv thaiv kev ua txhaum hauv av. Raws li qhov xoom-ntu kev hloov pauv tam sim no, xoom-ntu ua haujlwm tam sim no tshaj qhov teeb tsa tau raug kuaj pom, thiab kev tiv thaiv kev tiv thaiv tawm mus yog siab dua qhov ntsuas kev ua haujlwm tam sim no, thiab xa tawm lub teeb liab los txiav lossis txuas lub tswb hluav taws xob.
