1. Yog vim li cas
Vim li cas lub inverter tshwm sim overvoltage tripping lossis txo hwj chim tshwm sim?
Nws yuav yog ib qho ntawm cov laj thawj hauv qab no:
1)Koj daim phiaj hauv zos twb tau ua haujlwm sab nraum lub zos Standard voltage txwv (los yog tsis ncaj ncees lawm kev cai chaw).Piv txwv li, nyob rau hauv teb chaws Australia, AS 60038 qhia 230 volts raws li nominal daim phiaj voltage nrog a.+10%, -6% ntau yam, yog li kev txwv siab tshaj ntawm 253V.Yog tias qhov no tshwm sim ces koj lub tuam txhab Grid hauv zos muaj lub luag haujlwm raug cai los kho qhov voltage.Feem ntau los ntawm kev hloov kho lub hauv paus transformer.
2)Koj daim phiaj hauv zos tsuas yog nyob rau hauv qhov txwv thiab koj lub hnub ci, txawm tias tau teeb tsa kom raug thiab rau tag nrho cov qauv, thawb cov kab sib chaws hauv zos dhau qhov txwv tsis pub dhau.Koj lub hnub ci inverter cov zis terminals txuas nrog rau 'Connection Point' nrog daim phiaj los ntawm cable.Cov kab hluav taws xob no muaj cov hluav taws xob tiv thaiv uas tsim cov hluav taws xob hla lub cable thaum twg lub inverter xa tawm hluav taws xob los ntawm kev xa hluav taws xob tam sim no rau hauv daim phiaj.Peb hu qhov no yog 'voltage rise'.Qhov ntau koj lub hnub ci xa tawm qhov loj dua qhov voltage nce ua tsaug rau Ohm Txoj Cai (V = IR), thiab qhov siab dua ntawm cov cabling lub zog loj dua.
Piv txwv li, hauv Australia, Australian Standard 4777.1 hais tias qhov siab tshaj plaws voltage nce nyob rau hauv lub hnub ci teeb yuav tsum yog 2% (4.6V).
Yog li koj yuav muaj kev teeb tsa uas ua tau raws li tus qauv no, thiab muaj qhov hluav taws xob nce ntawm 4V ntawm tag nrho cov xa tawm.Koj daim phiaj hauv zos kuj tuaj yeem ua tau raws li tus qauv thiab nyob ntawm 252V.
Nyob rau hnub ci zoo thaum tsis muaj leej twg nyob hauv tsev, lub kaw lus xa tawm yuav luag txhua yam rau hauv daim phiaj.Qhov hluav taws xob raug thawb mus txog 252V + 4V = 256V rau ntau tshaj 10 feeb thiab lub inverter mus ncig.
3)Qhov siab tshaj plaws voltage nce ntawm koj lub hnub ci inverter thiab daim phiaj yog siab tshaj t nws 2% siab tshaj plaws nyob rau hauv Standard,vim tias qhov kev tiv thaiv hauv cable (nrog rau kev sib txuas) siab dhau lawm.Yog tias qhov no yog qhov teeb meem no, tus installer yuav tsum tau qhia koj tias koj AC cabling rau daim phiaj xav tau kev kho dua tshiab ua ntej hnub ci tuaj yeem teeb tsa.
4) Inverter hardware teeb meem.
Yog hais tias qhov ntsuas hluav taws xob hluav taws xob ib txwm nyob hauv qhov ntau, tab sis lub inverter ib txwm muaj overvoltage tripping yuam kev txawm tias qhov dav npaum li cas, nws yuav tsum yog qhov teeb meem kho vajtse ntawm lub inverter, tej zaum yuav yog IGBTs puas.
2. Kev kuaj mob
Ntsuas Koj Daim phiaj Voltage Txhawm rau ntsuas koj qhov hluav taws xob hauv cheeb tsam, nws yuav tsum ntsuas thaum koj lub hnub ci hluav taws xob tawm.Txwv tsis pub qhov hluav taws xob koj ntsuas yuav cuam tshuam los ntawm koj lub hnub ci, thiab koj tsis tuaj yeem nteg qhov kev liam ntawm daim phiaj!Koj yuav tsum tau ua pov thawj tias daim phiaj voltage siab yog tsis muaj koj lub hnub ci kev ua haujlwm.Koj tseem yuav tsum tig tag nrho cov khoom loj hauv koj lub tsev tawm.
Nws tseem yuav tsum tau ntsuas nyob rau hnub tshav ntuj nyob ib ncig ntawm tav su - vim qhov no yuav coj mus rau hauv tus account qhov voltage nce los ntawm lwm lub hnub ci nyob ib puag ncig koj.
Ua ntej - sau cov ntawv nyeem tam sim nrog lub multimeter.Koj lub ci ntsa iab yuav tsum tau nyeem ib qho tam sim no voltage nyeem ntawm lub ntsiab keyboards.Yog tias qhov hluav taws xob ntau dua li qhov txwv tsis pub muaj hluav taws xob, tom qab ntawd nqa ib daim duab ntawm lub tshuab hluav taws xob multimeter (zoo dua nrog lub hnub ci kev hloov pauv tseem ceeb hauv txoj haujlwm tawm hauv tib daim duab) thiab xa mus rau koj lub tuam txhab Grid lub tuam txhab hluav taws xob zoo.
Thib ob - sau qhov nruab nrab 10 feeb nrog lub logger voltage.Koj qhov sparky xav tau lub logger voltage (ie Fluke VR1710) thiab yuav tsum ntsuas 10 min nruab nrab peaks nrog koj lub hnub ci thiab cov khoom loj hloov tawm.Yog hais tias qhov nruab nrab yog siab tshaj qhov txwv voltage ces xa cov ntaub ntawv kaw tseg thiab ib daim duab ntawm kev ntsuas kev teeb tsa - dua li qhov zoo dua uas qhia lub hnub ci kev hloov pauv loj.
Yog hais tias ib qho ntawm 2 qhov kev ntsuam xyuas saum toj no yog 'zoo' ces nias koj lub tuam txhab Grid los kho koj cov qib voltage.
Txheeb xyuas qhov voltage poob hauv koj lub installation
Yog tias qhov ntsuas pom qhov hluav taws xob nce siab tshaj 2% ces koj yuav tsum tau hloov kho AC cable los ntawm koj lub inverter mus rau kab sib txuas lus kom cov xov hlau yog fatter (fatter wires = qis kuj).
Kauj ruam kawg - ntsuas qhov voltage nce
1. Yog tias koj daim phiaj hluav taws xob tsis zoo thiab qhov ntsuas hluav taws xob nce qis dua 2% ces koj lub txim taws yuav tsum ntsuas qhov teeb meem kom paub meej tias qhov ntsuas hluav taws xob nce:
2. Nrog PV off, thiab tag nrho lwm yam load circuits tawm, ntsuas qhov tsis muaj-load mov voltage ntawm lub ntsiab hloov.
3. Siv ib qho kev paub txog kev thauj khoom xws li lub rhaub lossis lub qhov cub / cov phaj kub thiab ntsuas qhov kos tam sim no hauv cov khoom siv, nruab nrab thiab lub ntiaj teb thiab cov khoom siv hluav taws xob ntawm lub ntsiab hloov.
4. Los ntawm qhov no koj tuaj yeem xam qhov voltage poob / nce hauv cov neeg siv khoom nkag thiab cov kev pabcuam tseem ceeb.
5. Xam cov kab AC tiv thaiv ntawm Ohm Txoj Cai kom khaws cov khoom zoo li cov pob qij txha tsis zoo lossis cov nruab nrab tawg.
3. Cov lus xaus
Cov kauj ruam tom ntej
Tam sim no koj yuav tsum paub tias koj qhov teeb meem yog dab tsi.
Yog qhov teeb meem #1- daim phiaj hluav taws xob siab dhau- ces qhov ntawd yog koj lub tuam txhab Grid qhov teeb meem.Yog tias koj xa lawv tag nrho cov pov thawj kuv tau hais tias lawv yuav tsum tau kho nws.
Yog muaj teeb meem #2- daim phiaj yog OK, voltage nce tsawg dua 2%, tab sis nws tseem mus txawv tebchaws ces koj xaiv yog:
1. Nyob ntawm koj lub tuam txhab Grid koj yuav raug tso cai hloov lub inverter 10 feeb nruab nrab voltage mus txawv tebchaws txwv rau tus nqi tso cai (lossis yog tias koj muaj hmoo ntau dua).Tau txais koj lub ci ntsa iab los xyuas nrog Lub Tuam Txhab Grid yog tias koj raug tso cai ua qhov no.
2. Yog tias koj lub inverter muaj "Volt / Var" hom (feem ntau cov niaj hnub ua) - ces nug koj tus installer kom pab tau hom no nrog rau cov ntsiab lus uas tau pom zoo los ntawm koj lub tuam txhab Grid hauv zos - qhov no tuaj yeem txo qhov nyiaj thiab qhov hnyav ntawm dhau voltage tripping.
3. Yog tias tsis tuaj yeem ua tau, yog tias koj muaj 3 theem khoom siv, kev kho dua tshiab rau 3 theem inverter feem ntau daws qhov teeb meem - vim tias qhov hluav taws xob nce mus txog 3 theem.
4. Txwv tsis pub koj tab tom saib kev txhim kho koj cov AC cables rau hauv daim phiaj lossis txwv lub zog xa tawm ntawm koj lub hnub ci.
Yog muaj teeb meem #3- max voltage nce ntau dua 2% - ces yog tias nws yog ib qho kev teeb tsa tsis ntev los no nws zoo li koj lub installer tsis tau nruab qhov system rau Tus Qauv.Koj yuav tsum tham nrog lawv thiab ua kom muaj kev daws teeb meem.Nws yuav muaj feem cuam tshuam txog kev kho dua tshiab AC cabling rau hauv daim phiaj (siv cov xov hlau fatter lossis luv luv ntawm cov kab hluav taws xob ntawm inverter thiab Grid txuas point).
Yog qhov teeb meem #4- Inverter hardware teeb meem.Hu rau kev txhawb nqa los muab kev hloov pauv.