Hauv cov teb twg yog UPS cov khoom siv hluav taws xob siv dav?
UPS fais fab mov system cov cuab yeej yog thawj hom khoom siv ntaub ntawv, feem ntau yog siv hauv kev tiv thaiv kev ruaj ntseg ntawm cov ntaub ntawv hauv computer, kev sib txuas lus, cov ntaub ntawv xov tooj ntawm tes, thiab lwm yam hauv kev lag luam cov ntaub ntawv loj, cov ntaub ntawv loj, kev thauj mus los, kev lag luam kev lag luam. saw, aerospace kev lag luam saw, thiab lwm yam. Raws li ib qho tseem ceeb peripheral cov cuab yeej ntawm lub computer cov ntaub ntawv system, kev sib txuas lus thiab cov ntaub ntawv network chaw, uninterruptible fais fab mov plays lub luag hauj lwm tseem ceeb heev nyob rau hauv kev tiv thaiv computer cov ntaub ntawv, kom lub stability ntawm lub hwj chim daim phiaj voltage thiab zaus, kev txhim kho lub kev ua tau zoo ntawm daim phiaj hluav taws xob, thiab tiv thaiv tam sim ntawm lub zog tsis ua hauj lwm thiab tsis xav txog lub hwj chim tsis ua hauj lwm los ntawm kev ua phem rau cov neeg siv.lub luag haujlwm.
Qhov thib ob hom kev lag luam fais fab UPS cov khoom siv hluav taws xob siv hluav taws xob feem ntau yog siv rau hauv kev lag luam hluav taws xob, hlau, cov hlau tsis muaj hlau, thee, petrochemical, kev tsim kho, tshuaj, tsheb, khoom noj khoom haus, tub rog thiab lwm yam kev lag luam hauv kev lag luam khoom siv hluav taws xob. , kom ntseeg tau tias tag nrho cov khoom siv hluav taws xob automation industrial system, tej thaj chaw deb Kev ntseeg tau ntawm kev lag luam automation fais fab mov rau AC thiab DC uninterruptible fais fab mov khoom xws li cov cuab yeej tswj hwm, high-voltage Circuit Court breaker kev twb kev txuas, kev tiv thaiv relay, tsis siv neeg cov cuab yeej, thiab cov khoom siv teeb liab.Industrial-qib uninterruptible fais fab mov yog cov khoom siv high-end ntawm cov khoom siv hluav taws xob tsis cuam tshuam.Nws suav nrog kev siv hluav taws xob hluav taws xob siv hluav taws xob rau kev siv hluav taws xob siab (tej zaum megawatt-theem) lub zog hloov pauv, kev tswj hwm digital, AC series redundancy thev naus laus zis, active pulse tam sim no suppression technology, high-power khoom tsim technology, thiab lwm yam. Obviously, cov tuam txhab hluav taws xob zoo tib yam tuaj yeem nkag tsis tau. kev lag luam no.Tsuas yog cov tuam txhab uas muaj lub zog hluav taws xob hluav taws xob siv hluav taws xob ntau thiab cov khoom tsim tawm, kev tsim khoom thiab kev pabcuam, thiab cov khoom siv sib xyaw ua ke thiab cov ntawv thov kev paub, tuaj yeem ua txoj haujlwm zoo hauv kev tsim cov khoom siv hluav taws xob tsis cuam tshuam, tsim khoom thiab muag kev lag luam. kev pabcuam.
Tam sim no, muaj plaub lub tswv yim rau loj-scale UPS input harmonic tam sim no suppression
npaj 1.
6-pulse UPS + active high-order harmonic lim, input tam sim no high-order harmonics <5% (nyob load), input zog yam tseem ceeb 0.95.Qhov kev npaj no ua rau qhov taw qhia tawm tswv yim zoo heev, tab sis nws cov thev naus laus zis tsis paub tab, thiab muaj teeb meem xws li kev them nyiaj ua yuam kev, overcompensation, thiab lwm yam, uas ua rau xws li kev poob qis lossis kev puas tsuaj ntawm lub ntsiab lus nkag.Qhov tsis xws luag ntawm THM active harmonic filter technology yog Common
a) Muaj teeb meem ntawm "kev them nyiaj tsis raug": vim tias cov nyiaj them rov qab nrawm dua 40ms, muaj peev xwm muaj kev nyab xeeb ntawm "cov nyiaj tsis raug".Piv txwv li, thaum ua haujlwm txiav / xa tawm ntawm cov khoom siv hluav taws xob, lossis ua haujlwm hnyav txiav / kev ua haujlwm ntawm sab saud thiab nqes dej ntawm UPS cov tswv yim, nws yooj yim los ua "kev them nyiaj sib txawv".Lub teeb tuaj, ua rau "hloov tam sim ntawd" nyob rau hauv ups hwj chim input harmonic tam sim no.Thaum nws hnyav dua, nws yuav ua rau "tsis muaj tseeb" ntawm UPS cov tswv yim hloov.
b) Tsis tshua muaj kev ntseeg siab: Rau cov khoom siv hluav taws xob tsis cuam tshuam nrog 6 pulses + active lim, tus nqi tsis ua hauj lwm yog siab, vim hais tias lub hwj chim tsav raj ntawm nws rectifier thiab converter yog IGBT raj.Ntawm qhov tsis sib xws, rau 12-pulse + passive lim UPS, cov khoom siv hluav taws xob zoo thiab cov khoom siv tau siv hauv nws cov lim dej.
c) Txo kev ua haujlwm ntawm lub cev thiab nce cov nqi khiav lag luam: kev ua haujlwm ntawm cov lim dej ua haujlwm yog li 93%.Hauv kev sib txuas ntawm 400KVA UPS, nyob rau hauv cov xwm txheej ntawm kev them nyiaj tag nrho thiab 33% cov khoom siv hluav taws xob siab tam sim no, yog tias tus nqi hluav taws xob them ntawm 0.8 yuan ib KW * hr =, cov nqi khiav hauj lwm them hauv ib xyoos yog raws li hauv qab no
400KVA * 0.07/3 = 9.3KVA;kev siv hluav taws xob txhua xyoo yog 65407KW.Hr, thiab tus nqi hluav taws xob nce ntxiv yog 65407X0.8 yuan = 52,000 yuan.
d) Ntxiv cov lim dej nquag yog qhov kim heev: qhov nominal input tam sim no ntawm active filter 200 kVA UPS yog 303 amps;
Harmonic tam sim no kwv yees: 0.33 * 303A = 100A,
Yog hais tias cov input harmonic tam sim no cov ntsiab lus tsawg dua 5%, cov nyiaj them tam sim no yuav tsum raug xam raws li yam tsawg kawg nkaus: 100A;
Qhov tseeb Configuration: Ib txheej ntawm 100 amp nquag lim.Raws li kev kwv yees tam sim no ntawm 1500-2000 yuan rau ampere, tag nrho cov nqi yuav nce 150,000-200,000 yuan, thiab tus nqi ntawm 6-pulse 200KVA UPS yuav nce li ntawm 60% -80%.
Scenario 2
Txais 6-pulse uninterruptible fais fab mov + 5th harmonic lim.Yog tias cov khoom siv hluav taws xob tsis cuam tshuam tsis cuam tshuam yog peb-theem kev tswj hwm tus choj-hom 6-pulse rectifier, cov harmonics tsim los ntawm tus account rectifier rau ze li ntawm 25-33% ntawm tag nrho cov harmonics, thiab tom qab ntxiv 5th harmonic lim, cov harmonics yog. txo kom qis dua 10%.Lub zog input yog 0.9, uas tuaj yeem txo qhov kev puas tsuaj ntawm kev sib raug zoo tam sim no rau hauv daim phiaj fais fab.Nrog rau qhov kev teeb tsa no, cov kev nkag siab tam sim no tseem muaj qhov loj, thiab lub tshuab hluav taws xob muaj peev xwm sib piv yuav tsum muaj ntau dua 1: 2, thiab muaj qhov tsis txaus ntseeg ntawm qhov txawv txav ntawm cov khoom tsim tawm.
Kev xaiv 3
Lub tswv yim cuav 12-pulse siv lub tshuab hloov pauv theem + 6-pulse rectifier yog tsim los ntawm ob lub 6-pulse rectifier ups:
a) Tus qauv 6-pulse rectifier
b) Theem-hloov 30-degree transformer + 6-pulse rectifier
Configured fake 12-pulse rectifier UPS.Nyob rau saum npoo, lub harmonics ntawm tag nrho load input tam sim no zoo li 10%.Qhov kev teeb tsa no muaj ib qho tseem ceeb ntawm kev ua tsis tiav.Thaum cov khoom siv hluav taws xob tsis cuam tshuam tsis cuam tshuam, cov khoom siv hluav taws xob sib xyaw ua ke ntawm lub cev nce siab, ua rau muaj kev phom sij loj rau kev nyab xeeb ntawm lub zog hluav taws xob.
Lub ntsiab tsis zoo:
1).Txiav cov ces kaum thiab cov ntaub ntawv ntawm cov khoom qub, tag nrho cov khoom siv ploj lawm.
2).Yog tias lub rectifier ntawm UPS tsis ua haujlwm, nws yuav hloov mus rau 6-pulse UPS, thiab cov ntsiab lus sib haum xeeb yuav nce siab.
3).Thiab kev tswj ntawm DC txoj kab tsheb npav yog qhov qhib-voj tswj qhov system.Cov tswv yim tam sim no sib qhia tsis tuaj yeem ua tau zoo heev.Lub harmonic tam sim no ntawm lub teeb load yuav tseem loj heev.
4).Qhov system expansion yuav nyuaj heev
5).Lub theem-hloov transformer ntsia tsis yog cov khoom qub, thiab kev sib tw nrog cov txheej txheem qub yuav tsis zoo heev.
6).Hauv pem teb cheeb tsam yuav loj heev
7).Qhov kev ua tau zoo yog 12-15%, uas tsis zoo li 12-pulse UPS.
Kev xaiv 4
Txais 12-pulse tsis cuam tshuam fais fab mov + 11-txoj kev sib haum xeeb lim.Yog tias lub tshuab hluav taws xob tsis cuam tshuam tsis cuam tshuam yog peb-theem kev tswj hwm tus choj-hom 12-pulse rectifier, tom qab ntxiv 11-txoj kev sib haum xeeb lim, nws tuaj yeem txo qis qis dua 4.5%, uas tuaj yeem tshem tawm tag nrho cov teeb meem ntawm kev sib haum xeeb. cov ntsiab lus tam sim no mus rau daim phiaj hluav taws xob, thiab tus nqi sib piv yog Lub hauv paus lim tau qis dua.
12-pulse UPS + 11th harmonic lim tau txais yuav, cov tswv yim tam sim no harmonic yog 4.5% (rated load), thiab cov khoom siv hluav taws xob yog 0.95.Hom kev teeb tsa no yog kev daws teeb meem tiav thiab txhim khu kev qha rau kev lag luam UPS fais fab mov, thiab yuav tsum muaj lub tshuab hluav taws xob ntim ntawm 1: 1.4.
Raws li kev soj ntsuam saum toj no, kev sib haum xeeb tshem tawm cov txheej txheem ntawm 12-pulse rectifier + 11-txoj kev sib haum xeeb lim nrog kev ua haujlwm zoo, kev ntseeg siab, kev ua haujlwm ruaj khov thiab txhim khu kev qha, thiab kev ua haujlwm zoo raug pom zoo hauv kev xyaum.
Lub sij hawm xa tuaj: Plaub Hlis-13-2023