Nyob rau hauv lub classical kev txiav txim zoo, arc tiv thaiv nyob rau hauv Russia yog ib tug ceev-ua yeeb yam luv luv-circuit tiv thaiv raws li cov ntaubntawv povthawj siv lub teeb spectrum ntawm ib tug qhib hluav taws xob arc nyob rau hauv lub switchgear; feem ntau txoj kev ntawm kev kaw lub teeb spectrum siv fiber-optic sensors yog siv mas. nyob rau hauv kev lag luam sector, tab sis nrog lub advent ntawm cov khoom tshiab Nyob rau hauv lub teb ntawm arc kev tiv thaiv nyob rau hauv lub tsev sector, uas yog modular AFDDs kev khiav hauj lwm ntawm ib tug tam sim no lub teeb liab, tso cai rau lub installation ntawm arc tiv thaiv ntawm cov kab tawm, nrog rau cov tis thawv, cables, kev sib txuas, sockets, thiab lwm yam, kev txaus siab rau lub ncauj lus no yog nce.
Txawm li cas los xij, cov tuam ntxhab tsis tham ntau txog cov ncauj lus kom ntxaws ntawm cov khoom lag luam modular (yog tias ib tus neeg muaj cov ntaub ntawv zoo li no, kuv tsuas yog zoo siab los muab cov ntawv txuas mus rau cov ntaub ntawv no), lwm qhov teeb meem yog kev tiv thaiv arc rau kev lag luam, nrog rau cov ncauj lus kom ntxaws. Cov neeg siv phau ntawv ntawm 122 nplooj ntawv, qhov twg lub hauv paus ntsiab lus ntawm kev ua haujlwm tau piav qhia meej.
Xav txog piv txwv li VAMP 321 arc tiv thaiv qhov system los ntawm Schneider Electric, uas suav nrog txhua yam kev tiv thaiv arc xws li overcurrent thiab arc nrhiav pom.
Kev ua haujlwm
- Tam sim no tswj nyob rau hauv peb theem.
- Zero sequence tam sim no.
- Cov ntawv teev xwm txheej, sau cov xwm txheej xwm txheej ceev.
- Tig ib txhij los ntawm tam sim no thiab lub teeb, lossis tsuas yog los ntawm lub teeb, lossis tsuas yog los ntawm tam sim no.
- Lub sij hawm teb ntawm cov zis nrog ib tug neeg kho tshuab relay yog tsawg tshaj li 7 ms, nrog rau xaiv IGBT card lub sij hawm teb yog txo mus rau 1 ms.
- Customizable trigger zones.
- Kev saib xyuas tus kheej tsis tu ncua.
- Cov cuab yeej siv tau nyob rau hauv ntau yam kev tiv thaiv arc ntawm qis thiab nruab nrab voltage faib tes hauj lwm.
- Lub Arc Flash Detection thiab Arc Protection system ntsuas qhov ua txhaum tam sim no thiab teeb liab los ntawm arc sensor channels thiab, yog tias muaj teeb meem tshwm sim, txo qis lub sij hawm hlawv los ntawm kev kaw qhov tam sim no pub rau arc.
Txoj cai ntawm matrix correlation
Thaum teeb tsa cov xwm txheej ua kom muaj kev tiv thaiv arc tshwj xeeb, cov ntsiab lus sib luag yog siv rau cov txiaj ntsig ntawm lub teeb thiab cov matrices tam sim no.
Yog tias qhov kev tiv thaiv theem raug xaiv hauv ib qho matrix nkaus xwb, nws ua haujlwm ntawm qhov xwm txheej tam sim no lossis lub teeb, yog li lub kaw lus tuaj yeem teeb tsa los ua haujlwm ntawm lub teeb liab tam sim no nkaus xwb.
Cov teeb liab muaj rau kev saib xyuas thaum lub programming tiv thaiv theem:
- Tam sim no nyob rau theem.
- Zero sequence tam sim no.
- Kab voltages.
- Phase voltages.
- Zero sequence voltage.
- Ntau zaus.
- Sib npaug ntawm theem tam sim no.
- Cov kab ke zoo tam sim no.
- Negative sequence tam sim no.
- Tus nqi txheeb ze ntawm qhov tsis zoo ib ntus tam sim no.
- Qhov sib piv ntawm qhov tsis zoo thiab xoom ua ntu zus tam sim no.
- Qhov zoo ib yam voltage.
- Negative sequence voltage.
- Tus nqi txheeb ze ntawm qhov tsis zoo ua ntu zus voltage.
- Tus nqi nruab nrab tam sim no hauv theem (IL1 + IL2 + IL3) / 3.
- Qhov nruab nrab voltage tus nqi UL1, UL2, UL3.
- Qhov nruab nrab voltage tus nqi U12, U23, U32.
- Nonlinear distortion coefficient IL1.
- Nonlinear distortion coefficient IL2.
- Nonlinear distortion coefficient IL3.
- Nonlinear distortion coefficient Ua.
- RMS tus nqi ntawm IL1.
- RMS tus nqi ntawm IL2.
- RMS tus nqi ntawm IL3.
- Yam tsawg kawg nkaus tus nqi IL1, IL2, IL3.
- Tus nqi siab tshaj IL1, IL2, IL3.
- Yam tsawg kawg nkaus tus nqi U12, U23, U32.
- Tus nqi siab tshaj U12, U23, U32.
- Yam tsawg kawg nkaus tus nqi UL1, UL2, UL3.
- Tus nqi siab tshaj UL1, UL2, UL3.
- Background nqi Uo.
- RMS tus nqi Io.
Kev kaw cov hom xwm txheej ceev
Kev kaw thaum muaj xwm txheej ceev tuaj yeem siv los txuag tag nrho cov kev ntsuas ntsuas (tam sim no, qhov hluav taws xob, cov ntaub ntawv hais txog lub xeev ntawm cov khoom siv digital thiab cov khoom tawm). Cov khoom siv digital kuj suav nrog cov cim tiv thaiv arc.
Pib sau
Cov ntaubntawv povthawj siv tau pib los ntawm kev ua rau lossis ua rau muaj kev tiv thaiv theem lossis ib qho kev tawm tswv yim digital. Lub teeb liab txhais tau raug xaiv nyob rau hauv cov zis teeb liab matrix (verttical signal DR). Cov ntaubntawv povthawj siv kuj tuaj yeem pib manually.
tswj tus kheej
Cov cuab yeej lub cim xeeb uas tsis yog-volatile yog siv los siv lub peev xwm muaj peev xwm thiab RAM tsawg.
Thaum lub tshuab hluav taws xob pab tau qhib, lub capacitor thiab RAM yog powered sab hauv. Thaum lub hwj chim muab tua, RAM pib tau txais lub zog los ntawm lub capacitor. Nws yuav khaws cov ntaub ntawv ntev npaum li lub capacitor muaj peev xwm tswj tau qhov hluav taws xob tso cai. Rau ib chav nrog qhov kub ntawm +25C, lub sijhawm ua haujlwm yuav yog 7 hnub (cov av noo siab txo qhov ntsuas no).
Tsis-volatile RAM yog siv los khaws cov ntaub ntawv ntawm cov xwm txheej xwm txheej ceev thiab cov xwm txheej teev tseg.
Kev ua haujlwm ntawm microcontroller thiab kev ncaj ncees ntawm cov xov hlau cuam tshuam nrog nws, nrog rau kev pabcuam ntawm software, raug saib xyuas los ntawm kev saib xyuas tus kheej network. Ntxiv nrog rau kev saib xyuas, lub network no sim rov pib lub microcontroller thaum muaj kev ua haujlwm tsis zoo. Yog hais tias lub reboot ua tsis tiav, tus kheej-saib xyuas ntaus ntawv pib qhia ib tug mus tas li qhov yuam kev.
Yog tias cov cuab yeej saib xyuas tus kheej pom qhov ua txhaum tas mus li, nws yuav lov tes taw rau lwm qhov tso zis relays (tshwj tsis yog tus kheej saib xyuas muaj nuj nqi tso tawm relay thiab cov zis relays siv los ntawm kev tiv thaiv arc).
Cov khoom siv hluav taws xob sab hauv kuj raug saib xyuas. Thaum tsis muaj lub zog ntxiv, lub tswb ceeb toom tau xa tuaj. Qhov no txhais tau hais tias qhov cuam tshuam sab hauv cov zis relay yog energized yog tias cov khoom siv hluav taws xob tau qhib thiab tsis pom qhov ua txhaum sab hauv.
Lub hauv paus chav tsev, cov khoom siv tawm tswv yim / tso tawm thiab cov sensors raug saib xyuas.
Kev ntsuas siv los ntawm kev tiv thaiv arc muaj nuj nqi
Kev ntsuas tam sim no hauv peb theem thiab lub ntiaj teb txhaum tam sim no rau kev tiv thaiv arc yog ua los ntawm hluav taws xob. Cov khoom siv hluav taws xob sib piv cov qib tam sim no nrog cov chaw mus txawv tebchaws thiab muab cov cim binary "I>>" lossis "Io>>" rau kev tiv thaiv arc yog tias qhov kev txwv dhau lawm. Tag nrho cov khoom tam sim no raug coj mus rau hauv tus account.
Cov cim βI>>β thiab βIo>>β txuas nrog FPGA nti, uas ua rau kev tiv thaiv arc. Kev ntsuas qhov tseeb rau kev tiv thaiv arc yog Β± 15% ntawm 50Hz.
Harmonics thiab tag nrho non-sinusoidality (THD)
Cov cuab yeej suav THD raws li feem pua ββββntawm cov tam sim no thiab qhov hluav taws xob ntawm qhov tseem ceeb zaus.
Harmonics ntawm 2nd mus rau 15th rau theem tam sim no thiab voltages raug coj mus rau hauv tus account. (Lub 17th harmonic yuav yog ib feem nrog rau 15th harmonic tus nqi. Qhov no yog vim cov qauv ntsuas digital.)
Cov qauv ntsuas hluav taws xob
Nyob ntawm seb hom kev thov thiab cov transformers tam sim no muaj, cov cuab yeej tuaj yeem txuas nrog rau qhov seem voltage, kab-rau-theem lossis theem-rau-theem voltage. Lub adjustable parameter "Voltage Measurement Mode" yuav tsum tau teem raws li kev twb kev txuas siv.
Muaj hom:
"U0"
Cov cuab yeej txuas nrog xoom kab ke voltage. Directional av txhaum tiv thaiv muaj. Kev ntsuas kab hluav taws xob, ntsuas hluav taws xob thiab overvoltage thiab kev tiv thaiv undervoltage tsis muaj.
"1LL"
Cov cuab yeej txuas nrog kab hluav taws xob. Ib-theem voltage ntsuas thiab undervoltage thiab overvoltage tiv thaiv muaj. Kev tiv thaiv kev tiv thaiv kev ua txhaum hauv ntiaj teb tsis muaj.
β1 LNβ
Cov cuab yeej txuas nrog ib theem voltage. Ib theem voltage ntsuas muaj. Hauv cov tes hauj lwm uas muaj kev sib koom ua ke hauv av thiab them nyiaj nruab nrab, kev tiv thaiv undervoltage thiab overvoltage muaj. Kev tiv thaiv kev tiv thaiv kev ua txhaum hauv ntiaj teb tsis muaj.
Symmetrical Cheebtsam
Nyob rau hauv peb-theem system, voltages thiab tam sim no yuav daws tau rau hauv symmetrical Cheebtsam, raws li Fortescue.
Cov symmetrical Cheebtsam yog:
- Direct sequence.
- Rov qab ua ntu zus.
- Zero sequence.
Tswj cov khoom
Cov cuab yeej no tso cai rau koj los tswj txog li XNUMX yam khoom, xws li hloov pauv, disconnector lossis riam hauv av. Kev tswj yuav ua tau raws li lub hauv paus ntsiab lus ntawm "kev xaiv-kev txiav txim" lossis "kev tswj ncaj qha".
Logic muaj nuj nqi
Cov cuab yeej txhawb nqa cov neeg siv qhov kev pab cuam logic rau cov teeb liab qhia tau zoo.
Cov haujlwm muaj xws li:
- Kuv.
- LOSSIS.
- Tshwj xeeb OR.
- TSIS TAU.
- COUNTERs.
- RS & D flip-flops.
Tau qhov twg los: www.hab.com