Lub luag haujlwm ntawm UPS
UPS sawv cev rau "lub zog tsis cuam tshuam" hauv Suav. Nws yog cov khoom siv hluav taws xob tsis cuam tshuam nrog lub zog cia khoom siv, feem ntau yog tsim los ntawm rectifiers thiab inverters, muab qhov voltage thiab zaus rau kev soj ntsuam cov tshuab, automation instruments, tej thaj chaw deb kev sib txuas lus systems thiab lwm yam khoom siv nyob rau hauv substations.
Lub luag haujlwm tseem ceeb ntawm UPS system yog ob npaug:
(1) raws li AC fais fab mov rau cov khoom siv tseem ceeb, nws tiv thaiv hluav taws xob tam sim ntawd los ntawm kev cuam tshuam rau kev ua haujlwm ib txwm thiab ua rau cov khoom puas tsuaj;
(2) Tshem tawm cov pa phem xws li surges, momentary high/low voltage, xaim suab nrov, thiab zaus offset nyob rau hauv lub mains fais fab mov, txhim kho lub hwj chim zoo, thiab muab high-zoo hwj chim rau computers thiab lwm yam khoom siv.
Classification ntawm UPS
Muaj peb yam tseem ceeb ntawm UPS systems: thaub qab, sib tham sib, thiab hauv online.
(1) Hom thaub qab: Nws muaj cov haujlwm xws li tsis siv neeg voltage stabilization thiab kev tiv thaiv hluav taws xob, nrog lub sijhawm hloov pauv ntawm li 10ms. Lub zog AC tso zis los ntawm lub inverter yog square yoj, nrog cov qauv yooj yim thiab tus nqi qis;
(2) Kev sib tham sib: nrog kev ua haujlwm lim dej, muaj zog tiv thaiv kev cuam tshuam loj, lub sijhawm hloov pauv tsawg dua 4ms, inverter tso zis raws li analog sine yoj, tus nqi qis dua hauv online;
(3) Online: Nrog rau cov qauv tsim thiab ua tiav kev ua tiav, nws tuaj yeem tso tawm cov hluav taws xob ntshiab sine yoj AC lub zog yam tsis muaj kev cuam tshuam, thiab tuaj yeem daws txhua yam teeb meem hluav taws xob xws li spikes, surges, thiab zaus drift; Tus nqi siab, feem ntau yog siv rau hauv ib puag ncig uas yuav tsum muaj zog nruj xws li cov khoos phis tawj tseem ceeb thiab cov khoom siv hauv network.
Cov qauv ntawm UPS
UPS system nyob rau hauv ib lub substation feem ntau muaj peb qhov chaw: lub hwj chim UPS party, bypass voltage regulator txee, thiab cov tso zis feeder txee (uas kuj yuav muab ua ke rau hauv ib tug rau tsawg zog).
Rectifiers:
Muaj ob lub luag haujlwm tseem ceeb: ua ntej, hloov pauv tam sim no (AC) mus rau tam sim no ncaj qha (DC), uas yog lim thiab nkag mus rau lub inverter; Thib ob, muab kev them nqi hluav taws xob rau lub roj teeb ua lub charger;
Inverter:
Hloov cov tam sim no ncaj qha (DC) mus rau hauv alternating tam sim no (AC) thiab muab nws rau lub load rau siv;
Roj teeb:
UPS yog siv los ua cov cuab yeej khaws cia hluav taws xob, tso cai rau nws hloov pauv DC lub zog thiab muab lub zog tsis cuam tshuam rau cov khoom thauj thaum muaj hluav taws xob poob. Nws lub peev xwm txiav txim siab lub sijhawm ntawm nws qhov kev tso tawm (lub hwj chim mov) txij nkawm;
Static hloov:
Kuj tseem hu ua qhov hloov pauv zoo li qub, nws yog AC hloov pauv uas muaj ob lub thyristors (SCR) txuas nrog rov qab ua ke, thiab nws qhov kaw thiab qhib yog tswj los ntawm lub logic maub los;
Isolation transformer thiab voltage regulator:
Nyob rau hauv lub tswv yim los yog cov zis seem, AC thiab DC yog cais, thiab lub voltage regulator tsis tsuas yog cais tab sis kuj stabilizes lub voltage;
Plaub hom kev ua haujlwm ntawm UPS
(1) Hom kev ua haujlwm li qub: Raws li ib txwm siv AC fais fab mov, lub rectifier hloov AC lub zog rau DC lub zog, tshem tawm "lub zog muaj kuab paug" hauv lub zog hluav taws xob, thiab tib lub sijhawm them lub roj teeb. Ntxiv rau lub inverter los hloov DC lub zog rau hauv AC lub zog, muab lub zog ruaj khov dua rau lub nra.
(2) Fais fab tuag hom: Thaum lub AC fais fab mov yog txawv txav los yog lub rectifier los yog reactor tsis ua hauj lwm, lub roj teeb pob muab DC lub hwj chim rau lub inverter, thiaj li hais tias AC tso zis yuav tsis cuam tshuam, yog li ua tiav cov hauj lwm ntawm kev tiv thaiv lub load.
(3) Hom fais fab thaub qab: Thaum lub inverter ntsib qhov txawv txav xws li tshuab fuses, luv Circuit Court, thiab lwm yam, lub inverter yuav txiav tawm kom tsis txhob puas. Yog hais tias lub bypass AC fais fab mov yog ib txwm nyob rau lub sij hawm no, lub static hloov yuav hloov lub hwj chim mov mus rau lub bypass backup fais fab mov thiab tso zis rau lub load rau siv.
(4) Kev tu lub tshuab bypass hom: Thaum UPS yuav tsum tau kho lossis lub roj teeb yuav tsum tau hloov thiab lub zog thauj khoom tsis tuaj yeem cuam tshuam, lub inverter hloov tuaj yeem raug txiav tawm ua ntej, tom qab ntawd kev saib xyuas bypass hloov tuaj yeem qhib tau, thiab rectifier thiab bypass hloov tuaj yeem raug txiav tawm. Lub AC fais fab mov txuas ntxiv muab AC lub zog rau lub thauj khoom los ntawm kev tswj xyuas kev hloov pauv, thiab cov neeg ua haujlwm saib xyuas tuaj yeem tswj hwm UPS kom nyab xeeb rau lub sijhawm no.
Cov kev xav tau rau UPS hauv lub zog hluav taws xob
(1) Lub kaw lus saib xyuas thiab kev sib txuas lus hauv chaw taws teeb tseem ceeb heev rau cov chaw nres tsheb, yog li kev ntseeg siab ntawm UPS system raws li lub zog hluav taws xob kuj muaj qhov xav tau siab heev;
(2) Kev thauj khoom ntawm kev sib koom ua ke automation system feem ntau yog ib-theem thauj khoom, yog li UPS fais fab mov rau lub zog siv feem ntau xav tau lub zog me me thiab nruab nrab UPS nrog peb-theem / ib-theem tawm tswv yim thiab ib-theem tso tawm. , nrog lub peev xwm feem ntau nyob rau hauv thaj tsam ntawm 60kVA;
(3) Lub bypass zoo li qub hloov yuav tsum muaj ob hom kev ua haujlwm, tsis siv neeg thiab phau ntawv, kom ua tiav kev hloov pauv tsis cuam tshuam;
(4) Vim lub fact tias lub substation muaj ib tug 220V los yog 110V DC system thiab ib tug DC charging screen los them lub roj teeb. Yog li lub hwj chim siab UPS tsis tuaj nrog lub roj teeb thiab siv ncaj qha rau DC system raws li DC input ntawm UPS, tsis tas yuav tsum tau them nqi;
(5) Lub DC input davhlau ya nyob twg ntawm lub hwj chim siab UPS feem ntau yuav tsum tau lub installation ntawm anti surge suab suppressors, xws li thim rov qab diodes, kom txo tau qhov cuam tshuam ntawm UPS ntawm lub tsheb npav DC;
(6) UPS fais fab mov yuav tsum muaj tsawg kawg yog 40% ntawm nws lub peev xwm muab hluav taws xob thaum muaj tag nrho cov khoom siv. UPS yuav tsum tuav lub zog tsis muaj kev cuam tshuam tsis pub tsawg tshaj 60 feeb tom qab AC fais fab tuag.