Peb -theem transformers thiab peb-theem transformer banks tuaj yeem txuas rau hauv lub hnub qub, delta, lossis zigzag configurations, raws li. Cov no tau sawv cev los ntawm cov cim Y, D, thiab Z ntawm qhov siab -voltage sab thiab y, d, thiab z ntawm qis-voltage sab. Thaum muab qhov nruab nrab nruab nrab, qhov siab -voltage sab yog sawv cev los ntawm YN thiab ZN, thiab qis-voltage sab los ntawm yn thiab zn. Raws li qhov sib txawv ntawm kev sib txuas ntawm peb -theem windings, muaj 12 pawg xaim hluav taws xob. Txawm li cas los xij, kom yooj yim ntawm kev tsim khoom thiab siv, kuv lub teb chaws Ameslikas tau teev tseg 5 pawg thaiv kab: Y, Yn0 (Y / Y0-12); Y, Yn (Y/Y-12); YN, Yn (Y0/Y-12); Y, d11 (Y/Δ-11); YN, d11 (Y0/Δ-11).
Y, Yn0 (Y/Y0-12): Siv rau kev faib khoom siv hluav taws xob. Ob qho tib si thawj thiab theem nrab windings yog lub hnub qub- txuas, thiab cov winding theem nrab yog nruab nrab-hauv av.
YN,d11 (Y0/△-11) yog siv rau high-voltage transmissions, enabling grounding of the high-voltage side of the power system.
Y, zn11: Ib qho kev sib txuas zigzag (lub hnub qub kev twb kev txuas) nrog thawj winding txuas nrog lub hnub qub configuration thiab lub thib ob winding grounded ntawm nruab nrab point.
Txawm li cas los xij, hom kev sib txuas saum toj no tsis suav nrog D, yn11. Hauv kev lag luam kev sib txuas lus, hauv nroog cov phiaj xwm hluav taws xob, kev lag luam thiab kev lag luam mining, thiab 10/0.4/0.23kV tis systems ntawm pej xeem vaj tse, lub teb chaws standardized Y, Yn0 peb-theem transformer tau siv ntau xyoo, ua raws li tus qauv yav dhau los tau txais los ntawm lub qub Soviet Union. Txawm li cas los xij, kev faib khoom siv hluav taws xob uas tsim los siv thev naus laus zis tuaj yeem muaj ob hom kev sib txuas (D, Yn0; D, yn11). Transformers xaiv los ntawm txawv teb chaws - cov lag luam ua lag luam thiab cov khoom xa tawm hauv ntau lub teb chaws siv D,Yn11 kev sib txuas.
kuv lub teb chaws tus qauv JGJ16-2008, "Code for Electrical Design of Civil Buildings," qhia cov hauv qab no hais txog kev xaiv ntawm transformer kev twb kev txuas pawg: Ib tug transformer nrog kev twb kev txuas pab pawg D, Yn11, yuav tsum tau xaiv yog hais tias ib tug ntawm cov nram qab no tej yam kev mob raug:
Qhov peb -theem unbalanced load tshaj 15% ntawm lub zog ntsuas ntawm txhua theem ntawm lub transformer.
Nws yog ib qho tsim nyog yuav tsum tau nce ib qho -theem luv- tus nqi hluav taws xob tam sim no kom ntseeg tau tias qhov rhiab heev ntawm qhov qis -voltage ib zaug -theem grounding tiv thaiv ntaus ntawv.
Nws yog ib qho tsim nyog los txwv cov ntsiab lus thib peb harmonic.