Qhov kev tswj qhov hluav taws xob ntawm qee qhov winding nyob rau hauv peb lub tshuab hluav taws xob winding yog qhia raws li feem pua ntawm qhov hluav taws xob ntawm nws tsis muaj -load qhib Circuit Court davhlau ya nyob twg. Lub sijhawm no, tsuas yog ib qho ntawm ob txoj hlua ntawm lub tshuab hloov pauv tau zoo siab, thiab qhov thib peb winding yog nyob rau hauv lub xeev unloaded, uas yog, qhov yooj yim voltage thiab load ua ke ntawm txhua winding yog tau los ntawm cov lem ratio ntawm qhov tsis muaj -load voltage.
Nyob rau hauv cov ntaub ntawv ntawm ob output windings thiab ib tug input winding. Feem ntau, nws yog ib qho tsim nyog yuav tsum paub qhov kev tswj hwm qhov hluav taws xob nyob rau hauv peb lub xeev sib txawv. Rau txhua lub xeev kev thauj khoom, ob qhov kev hloov pauv ywj pheej yuav raug xam, uas yog cov kev hloov pauv ntawm txhua qhov tso zis winding thaum qhov hluav taws xob tas li raug siv rau cov khoom siv winding (tsis hais seb puas muaj tam sim no dhau los).
Cov kev cai voltage ntawm cov zis windings, nyob rau hauv no yooj yim thiab ntau rooj plaub, yog implied nyob rau hauv cov kev tswj tus nqi ntawm cov input winding rau cov zis winding, thiab nws tsis muaj nuj nqis los qhia nws cais.
Cov ntaub ntawv xav tau rau kev tswj hwm tus nqi hluav taws xob yog impedance voltage thiab load poob, uas tuaj yeem tau txais los ntawm kev sim ua khub windings thiab qhia raws li feem pua ntawm cov peev txheej hauv paus (kV · A), raws li qhov tsawg kawg nkaus ntsuas peev xwm ntawm winding yog kV · A.
Raws li cov ntaub ntawv no, ib qho hluav taws xob sib npaug tuaj yeem muab tau. Nws yuav tsum tau taw qhia tias qhov sib npaug Circuit Court no tsuas yog lub tswv yim ua lej xwb thiab tsis sawv cev rau qhov kev npaj tiag tiag lossis txoj kev sib txuas ntawm windings. Yog tias ua tau, daim duab kos yuav tsum ua raws li qhov tseeb ntawm qhov hloov pauv. Qee qhov ntawm cov khoom no yog qhov tsis zoo, thaum lwm tus yog xoom, nyob ntawm qhov tseeb lub cev qauv ntawm cov windings ntawm cov tub ntxhais hlau.
Txhawm rau kom tau txais lub xeev load uas yuav tsum tau ua, nws yog ib qho tsim nyog los txiav txim siab qhov kev khiav hauj lwm muaj peev xwm (kV · A) ntawm txhua ceg thiab xam qhov kev hloov kho ntawm txhua ceg cais. Qhov kev tswj xyuas qhov hluav taws xob sib raug rau ib khub ntawm winding terminals yog algebraic sum ntawm cov kev cai voltage ntawm ob ceg sib npaug hauv qhov sib npaug.
Nyob rau hauv cov ntaub ntawv ntawm ob output windings thiab ib tug input winding. Cov kauj ruam ntxaws ntxaws rau kev suav cov kev cai voltage yog raws li hauv qab no:
1) Txiav txim siab qhov load (kV · A) rau txhua qhov winding ntsig txog qhov kev txiav txim siab load;
2) Rau cov zis winding, nws cov load yog cov teev load;
3) Xav txog qhov kev thauj khoom ntawm qhov nkag winding raws li qhov tso zis phasor sum ntawm cov zis winding, thiab muab cov khoom siv hluav taws xob thiab plaub fab raws li nyob rau hauv -theem thiab quadrature Cheebtsam.
Thaum yuav tsum muaj qhov tseeb siab rau kev suav, ib qho kev nce ntxiv yuav tsum tau ntxiv rau qhov tso zis phasor sum. Lawv tag nrho yuav tsum tau ntxiv rau cov khoom siv orthogonal. Txhawm rau kom tau txais cov txiaj ntsig zoo ntawm cov khoom siv input winding.
Lub load ntawm txhua ceg yog qhov piv ntawm qhov tseeb load ntawm winding mus rau qhov yooj yim load, siv los txiav txim qhov sib npaug Circuit Court. Los ntawm kev ntxiv cov txiaj ntsig cuam tshuam rau hauv -theem feem ntawm cov zis phasor sum, cov txiaj ntsig suav tau raug ntau dua, tab sis txoj hauv kev no muaj kev cuam tshuam me ntsis rau kev hloov kho tus nqi xam.
Txhawm rau kom tau txais cov kev cai voltage ntawm lub hwj chim winding thiab ib qho kev thauj khoom winding, ntxiv cov kev cai voltage ntawm ob ceg algebraically, sau tseg tias tej zaum yuav muaj qhov tsis zoo ntawm ob. Yog tias qhov tau txais phasor sum yog qhov zoo, nws qhia tau tias yuav muaj qhov hluav taws xob poob los ntawm tsis muaj -load mus rau qhov kev txiav txim siab load. Yog hais tias nws tsis zoo, nws qhia tau hais tias qhov voltage nce.
Rov ua qhov kev suav sau saum toj no rau lwm qhov windings. Yog hais tias qhov sib npaug Circuit Court yog raws li qhov zoo impedance tus nqi ntsuas ntawm lub terminals ntawm lub autotransformer, cov saum toj no xam cov kauj ruam yog muaj feem xyuam rau xam qhov voltage tswj tus nqi ntawm lub autotransformer.
Nyob rau hauv cov ntaub ntawv ntawm ob winding inputs thiab ib tug winding tso zis, yog hais tias lub load faib ntawm ob lub input windings paub, txoj kev no kuj siv tau rau kev xam.
