Photovoltaic cables yog lub hauv paus ntawm kev txhawb nqa cov khoom siv hluav taws xob hauv photovoltaic systems.Tus nqi ntawm cov cables siv nyob rau hauv cov tshuab photovoltaic tshaj li ntawm cov tshuab tsim hluav taws xob, thiab lawv kuj yog ib qho tseem ceeb cuam tshuam rau kev ua haujlwm ntawm tag nrho cov kab ke.
Txawm hais tias photovoltaic DC thiab AC cables suav txog li 2-3% ntawm tus nqi ntawm cov khoom siv hluav taws xob faib hluav taws xob, qhov kev paub tseeb tau pom tias siv cov cables tsis raug yuav ua rau cov kab ntau dhau hauv qhov project, tsis tshua muaj hluav taws xob ruaj khov, thiab lwm yam uas txo qis. qhov project rov qab los.
Yog li ntawd, xaiv txoj cai cables tuaj yeem txo qhov kev sib tsoo ntawm qhov project, txhim kho cov khoom siv hluav taws xob muaj kev ntseeg siab, thiab pab txhawb kev tsim kho, kev ua haujlwm thiab kev saib xyuas.
Hom ntawm photovoltaic cables
Raws li qhov system ntawm photovoltaic fais fab chaw nres tsheb, cables tuaj yeem muab faib ua DC cables thiab AC cables.Raws li kev siv sib txawv thiab kev siv ib puag ncig, lawv raug cais raws li hauv qab no:
DC cables feem ntau yog siv rau:
Series kev sib txuas ntawm cov khoom;
Parallel kev sib txuas ntawm cov hlua thiab nruab nrab ntawm cov hlua thiab DC faib lub thawv (combiner thawv);
Nruab nrab ntawm DC faib lub thawv thiab inverter.
AC cables feem ntau yog siv rau:
Kev sib txuas ntawm inverters thiab step-up transformers;
Kev sib txuas ntawm cov kauj ruam-up transformers thiab faib khoom;
Kev sib txuas ntawm cov khoom siv faib khoom thiab cov phiaj xwm hluav taws xob lossis cov neeg siv.
Cov kev xav tau rau photovoltaic cables
Cov cables siv nyob rau hauv qhov tsawg-voltage DC kis tau tus mob ib feem ntawm lub hnub ci photovoltaic fais fab tuag system muaj cov kev xav tau sib txawv rau kev sib txuas ntawm cov khoom sib txawv vim qhov kev siv sib txawv thiab cov kev cai.Tag nrho cov yam yuav tsum tau xav txog yog: cable rwb thaiv tsev kev ua tau zoo, tshav kub thiab nplaim retardant kev ua tau zoo, anti-aging kev ua tau zoo thiab hlau txoj kab uas hla specifications.DC cables feem ntau muab tso rau sab nraum zoov thiab yuav tsum muaj dej-pov thawj, tiv thaiv tshav ntuj, tiv thaiv khaub thuas, thiab UV-pov thawj.Yog li ntawd, DC cables hauv cov tshuab hluav taws xob faib hluav taws xob feem ntau xaiv photovoltaic-certified tshwj xeeb cables.Hom kev sib txuas no siv ob txheej txheej rwb thaiv tsev, uas muaj kev tiv thaiv zoo rau UV, dej, ozone, acid, thiab ntsev yaig, muaj peev xwm zoo heev rau huab cua thiab hnav tsis kam.Xav txog DC connector thiab cov zis tam sim no ntawm photovoltaic module, feem ntau siv photovoltaic DC cables yog PV1-F1 * 4mm2, PV1-F1 * 6mm2, thiab lwm yam.
AC cables feem ntau yog siv los ntawm AC sab ntawm lub inverter mus rau AC combiner lub thawv los yog AC daim phiaj-txuas txee.Rau cov AC cables ntsia sab nraum zoov, noo noo, tshav ntuj, txias, tiv thaiv UV, thiab qhov ntev ntev yuav tsum tau txiav txim siab.Feem ntau, YJV hom cables yog siv;rau AC cables ntsia hauv tsev, kev tiv thaiv hluav taws thiab nas thiab ntsaum tiv thaiv yuav tsum raug txiav txim siab.
Kev xaiv cov khoom siv cable
Cov DC cables siv nyob rau hauv cov chaw nres tsheb fais fab photovoltaic feem ntau yog siv rau kev ua haujlwm sab nraum zoov ntev.Vim muaj kev txwv ntawm kev tsim kho, cov khoom sib txuas feem ntau yog siv rau kev sib txuas cable.Cable conductor cov ntaub ntawv tuaj yeem muab faib ua tooj liab thiab txhuas core.
Copper core cables muaj peev xwm antioxidant zoo dua li txhuas, lub neej ntev dua, kev ruaj ntseg zoo dua, qis qis qis thiab qis zog poob.Hauv kev tsim kho, cov cores tooj liab hloov tau yooj yim dua thiab tso cai khoov lub vojvoog me me, yog li nws yooj yim tig thiab hla cov kav dej.Ntxiv mus, tooj liab cores yog qaug zog-resistant thiab tsis yooj yim rau tawg tom qab rov khoov, yog li kev xaim yog yooj yim.Nyob rau tib lub sijhawm, cov cores tooj liab muaj lub zog zoo txhua yam thiab tuaj yeem tiv taus cov tshuab ua haujlwm loj, uas ua rau muaj kev yooj yim rau kev tsim kho thiab tso, thiab tseem tsim cov xwm txheej rau kev tsim kho tshuab.
Ntawm qhov tsis sib xws, vim yog cov khoom siv tshuaj lom neeg ntawm txhuas, aluminium core cables yog nquag oxidation (electrochemical cov tshuaj tiv thaiv) thaum lub sij hawm installation, tshwj xeeb tshaj yog creep, uas yuav yooj yim ua rau tsis ua hauj lwm.
Yog li ntawd, txawm hais tias tus nqi ntawm aluminium core cables yog tsawg, rau lub hom phiaj ntawm kev nyab xeeb thiab kev ua haujlwm ruaj khov mus ntev, Rabbit Jun pom zoo kom siv cov tub ntxhais tooj liab cables hauv cov haujlwm photovoltaic.
Kev suav ntawm photovoltaic cable xaiv
Rated tam sim no
Qhov chaw hla ntawm DC cables nyob rau ntau qhov chaw ntawm lub photovoltaic system yog txiav txim siab raws li cov hauv qab no: Cov kev sib txuas ntawm cables ntawm lub hnub ci cell modules, cov cables sib txuas ntawm cov roj teeb, thiab cov cables txuas ntawm AC loads feem ntau xaiv nrog cov ntsuas. tam sim no ntawm 1.25 npaug ntawm qhov siab tshaj plaws ua haujlwm tam sim no ntawm txhua lub cable;
Kev sib txuas ntawm cov kab hluav taws xob ntawm lub hnub ci cell arrays thiab arrays, thiab cov cables txuas ntawm cov roj teeb (pab pawg) thiab cov inverter feem ntau xaiv nrog cov ntsuas tam sim no ntawm 1.5 npaug ntawm qhov siab tshaj plaws ua haujlwm tam sim no ntawm txhua lub cable.
Tam sim no, kev xaiv ntawm cable hla ntu feem ntau yog raws li kev sib raug zoo ntawm txoj kab uas hla thiab tam sim no, thiab kev cuam tshuam ntawm ambient kub, voltage poob, thiab nteg txoj kev ntawm lub peev xwm nqa tam sim no ntawm cables feem ntau tsis quav ntsej.
Nyob rau hauv ib puag ncig siv sib txawv, lub peev xwm nqa tau tam sim no ntawm lub cable, thiab nws raug pom zoo tias yuav tsum tau xaiv txoj kab uas hla ntawm txoj kab uas hla thaum tam sim no ze rau qhov kawg ntawm tus nqi.
Kev siv tsis raug ntawm cov kab hluav taws xob me me photovoltaic ua rau muaj hluav taws kub tom qab tam sim no overloaded
Voltage poob
Qhov tsis muaj hluav taws xob hauv lub tshuab hluav taws xob photovoltaic tuaj yeem ua tau raws li: voltage poob = tam sim no * cable ntev * voltage yam.Nws tuaj yeem pom los ntawm cov qauv uas qhov kev poob qis yog proportional rau qhov ntev ntawm lub cable.
Yog li ntawd, thaum lub sij hawm kev tshawb fawb ntawm qhov chaw, lub hauv paus ntsiab lus ntawm kev khaws cov array mus rau lub inverter thiab lub inverter mus rau lub kab sib txuas taw tes kom ze li sai tau yuav tsum tau ua raws li.
Hauv kev siv dav dav, DC kab poob ntawm photovoltaic array thiab inverter tsis pub tshaj 5% ntawm cov zis tawm hluav taws xob, thiab AC kab poob ntawm inverter thiab kab sib txuas taw tes tsis pub tshaj 2% ntawm inverter tso zis voltage.
Nyob rau hauv tus txheej txheem ntawm engineering daim ntawv thov, lub empirical mis yuav siv tau: △U = (I * L * 2) / (r * S)
△U: cable voltage poob-V
I: cable yuav tsum tiv taus qhov siab tshaj plaws cable-A
L: cable tso ntev-m
S: cable cross-sectional cheeb tsam-mm2;
r: conductor conductivity-m / (Ω * mm2;), r tooj liab = 57, r aluminium = 34
Thaum tso ntau cov tub ntxhais cables hauv cov pob khoom, tsim qauv yuav tsum tau them sai sai rau cov ntsiab lus
Hauv daim ntawv thov tiag tiag, xav txog yam xws li cable thaiv txoj kev thiab kev txwv tsis pub siv, cov cables ntawm photovoltaic systems, tshwj xeeb tshaj yog AC cables, tej zaum yuav muaj ntau ntau cov tub ntxhais cables nteg nyob rau hauv bundles.
Piv txwv li, nyob rau hauv ib tug me me-muaj peev xwm peb-theem system, AC outgoing kab siv "ib kab plaub cores" los yog "ib kab tsib cores" cables;nyob rau hauv ib tug loj-muaj peev xwm peb-theem system, cov AC outgoing kab siv ntau cables nyob rau hauv parallel es tsis txhob ntawm ib leeg-core loj-inch cables.
Thaum ntau cov tub ntxhais cables tau muab tso rau hauv cov pob khoom, qhov tseeb tam sim no nqa lub peev xwm ntawm cov cables yuav raug txo qis los ntawm qee qhov kev faib ua feem, thiab qhov teeb meem no yuav tsum tau txiav txim siab thaum pib ntawm qhov project tsim.
Txoj kev tso kab
Kev tsim kho tus nqi ntawm cable engineering hauv photovoltaic fais fab tsim cov haujlwm feem ntau yog siab, thiab kev xaiv ntawm txoj kev tso ncaj qha cuam tshuam rau tus nqi tsim kho.
Yog li ntawd, kev npaj tsim nyog thiab kev xaiv kom raug ntawm txoj kev tso cable yog qhov txuas tseem ceeb hauv kev tsim kab hluav taws xob.
Txoj kev tso cov kab hluav taws xob yog kev txiav txim siab zoo raws li qhov xwm txheej, ib puag ncig, cable specifications, qauv, ntau thiab lwm yam, thiab raug xaiv raws li qhov yuav tsum tau ua ntawm kev lag luam txhim khu kev qha thiab kev saib xyuas yooj yim thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm thiab kev lag luam rationality.
Kev tso ntawm DC cables hauv photovoltaic fais fab tsim cov haujlwm feem ntau suav nrog kev faus ncaj qha nrog cov xuab zeb thiab cib, tso cov kav dej, tso rau hauv troughs, tso rau hauv cable tunnels, tso rau hauv tunnels, thiab lwm yam.
Kev tso ntawm AC cables tsis txawv ntau ntawm cov txheej txheem ntawm kev siv hluav taws xob dav dav.
DC cables feem ntau yog siv los ntawm photovoltaic modules, nruab nrab ntawm cov hlua thiab DC cov thawv sib txuas, thiab nruab nrab ntawm cov thawv sib txuas thiab cov inverter.
Lawv muaj qhov sib txawv me me thiab cov khoom loj.Feem ntau, cov cables yog khi nrog cov module brackets los yog nteg los ntawm cov kav dej.Thaum tso, cov hauv qab no yuav tsum xav txog:
Rau kev sib txuas cables ntawm modules thiab txuas cables ntawm cov hlua thiab cov thawv sib txuas, cov khoom siv hluav taws xob yuav tsum tau siv los ua cov kev txhawb nqa channel thiab kho rau cable tso ntau li ntau tau, uas tuaj yeem txo qhov cuam tshuam ntawm ib puag ncig yam rau qee yam.
Lub zog ntawm cable tso yuav tsum tsis tu ncua thiab tsim nyog, thiab yuav tsum tsis txhob nruj heev.Qhov kub ntawm qhov sib txawv nruab hnub thiab hmo ntuj nyob rau hauv qhov chaw photovoltaic feem ntau yog loj, thiab thermal expansion thiab contraction yuav tsum raug zam kom tsis txhob muaj cov kab tawg.
Cov khoom siv photovoltaic cable ua rau saum npoo ntawm lub tsev yuav tsum coj mus rau hauv tus account tag nrho kev zoo nkauj ntawm lub tsev.
Qhov chaw tso khoom yuav tsum tsis txhob tso cov hlua khi ntawm cov npoo ntse ntawm cov phab ntsa thiab cov hlua khi kom tsis txhob txiav thiab sib tsoo cov txheej txheej rwb thaiv tsev kom ua rau luv luv Circuit Court, los yog shearing quab yuam txiav cov xov hlau thiab ua rau qhib circuits.
Nyob rau tib lub sijhawm, cov teeb meem xws li hluav taws xob ncaj qha rau ntawm cov kab hluav taws xob yuav tsum tau txiav txim siab.
Tsim nyog npaj txoj kev teeb tsa cable, txo txoj kev hla, thiab muab tso kom ntau li ntau tau kom txo tau lub ntiaj teb kev khawb av thiab kev siv cable thaum lub sijhawm tsim kho.
Cov ntaub ntawv tus nqi photovoltaic cable
Tus nqi ntawm cov khoom tsim nyog photovoltaic DC cables nyob rau hauv kev ua lag luam tam sim no nws txawv raws li qhov chaw hla thiab yuav ntim.
Tsis tas li ntawd, tus nqi ntawm cov cable muaj feem xyuam nrog kev tsim ntawm lub chaw nres tsheb fais fab.Optimized tivthaiv layout yuav txuag tau siv DC cables.
Feem ntau hais lus, tus nqi ntawm cov kab hluav taws xob photovoltaic yog li ntawm 0.12 txog 0.25 / W.Yog tias nws dhau ntau dhau lawm, nws yuav tsum tau kuaj xyuas seb tus qauv tsim puas tsim nyog lossis seb cov cables tshwj xeeb puas siv rau cov laj thawj tshwj xeeb.
Cov ntsiab lus
Txawm hais tias photovoltaic cables tsuas yog ib feem me me ntawm lub photovoltaic system, nws tsis yog yooj yim li kev xav los xaiv cov cables tsim nyog los xyuas kom meej tias qhov kev sib tsoo tsawg ntawm qhov project, txhim kho cov khoom siv hluav taws xob, thiab pab txhawb kev tsim kho, kev ua haujlwm thiab kev saib xyuas.Kuv vam tias cov lus qhia hauv tsab xov xwm no tuaj yeem muab qee qhov kev txhawb nqa rau koj hauv kev tsim thiab xaiv yav tom ntej.
Thov koj xav tiv tauj peb kom paub ntxiv txog cov hnub ci cables.
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Post lub sij hawm: Jun-19-2024
