Raws li tus naj npawb ntawmtransformersNyob rau hauv tag nrho cov kauj ruam-down substation, lub hauv paus ua hauj lwm ntawm lub transformer muaj ob txoj kev hauv qab no:
1. Ncua tseg. Qhib thaub qab hom ntawm lub transformer txhais tau hais tias muaj ob transformers, ib tug yog ua hauj lwm thiab lwm yam yog nyob rau hauv thaub qab. Thaum lub transformer yog kho los yog ua tsis tau tejyam, lub backup transformer yog muab tso rau hauv lub lag luam thiab yuav tsum tau nqa tag nrho cov load. Lub peev xwm ntawm txhua qhov hloov pauv yog txiav txim siab los ntawm 100 feem pua ntawm cov nqi suav, uas yog, SrT Ntau dua lossis sib npaug rau 100 feem pua SJS.
2. Tsaus cia. Qhov tsaus nti backup hom ntawm lub transformer txhais tau hais tias thaum lub sij hawm ib txwm ua hauj lwm, ob transformers ua hauj lwm nyob rau tib lub sij hawm, txhua transformer bears ib nrab ntawm cov load, thiab load tus nqi ntawm txhua transformer yog tsawg dua 80 feem pua. Thaum lub transformer yog kho los yog faulty, lwm transformer yuav nqa tag nrho cov load kom deb li deb tau, thiab lub transformer yuav overloaded nyob rau lub sij hawm no.
Tam sim no specification GB 50059-2011 3.1.3 [GB 50053-2013 3.3] tag nrho cov yuav tsum tau: substations nruab nrog ob los yog ntau tshaj lub ntsiab transformers, thaum lub ntsiab transformer yog disconnected, lub peev xwm ntawm qhov tseem ceeb transformers (suav nrog overload muaj peev xwm) yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm tag nrho cov thawj thiab thib ob load zog. Qhov ntawd yog hais tias, ntxiv rau kom ua tau raws li qhov yuav tsum tau ua ntawm txhua lub tshuab hloov pauv nws tus kheej, nws tseem yuav tsum tau txiav txim siab tias thaum ib lub tshuab hloov pauv tau kho lossis tsis raug, nws tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm tag nrho cov thawj thiab thib ob loads.
Cov kev xav tau tshwj xeeb yog qhov kev xav tau qis dua ntawm tus qauv tsim, thiab lub peev xwm ntawm lub transformer yuav raug xaiv raws li qhov xav tau tiag tiag hauv kev tsim tiag.
