Kev xaiv thiab tsim cov cables rau photovoltaic fais fab nroj tsuag yog ib qho ntawm cov kev sib txuas tseem ceeb kom ntseeg tau tias kev ua haujlwm zoo thiab kev nyab xeeb ntawm lub cev. Kev xaiv cable tsim nyog tuaj yeem tsis tsuas yog txo lub zog poob, tab sis kuj txuas ntxiv lub neej kev pab cuam ntawm lub cev thiab txo cov nqi kho.
Cov ntsiab lus tseem ceeb ntawm kev xaiv cable thiab tsim qauv
Raws li qhov ntsuas hluav taws xob xaiv ntawm photovoltaic system:lub cable yuav tsum ua kom tau raws li qhov yuav tsum tau muaj qhov ntsuas hluav taws xob ntawm lub tshuab photovoltaic. Piv txwv li, nyob rau hauv lub chaw nres tsheb fais fab photovoltaic nrog DC ua hauj lwm voltage ntawm 600V los yog siab dua, cables uas tuaj yeem tiv taus qhov sib thooj voltage yuav tsum tau xaiv.
Xav txog cov yam ntxwv load:Nws yog tsim nyog los coj mus rau hauv tus account lub load yam ntxwv ntawm lub photovoltaic vaj huam sib luag thiab lub inverter, nrog rau qhov siab tshaj plaws tam sim no, luv luv Circuit Court tam sim no, thiab lwm yam. Rau tsev neeg photovoltaic systems, aluminium core cables feem ntau yog siv los tswj cov nqi, tab sis cov tub ntxhais tooj liab cables nyiam dua rau lub cev muaj zog, qhov tseem ceeb ntawm lub zog, thiab lwm yam.
Huab cua tsis kam thiab ib puag ncig adaptability:Cov kab hluav taws xob sab nraum zoov yuav tsum muaj cov dej tsis zoo thiab UV tiv taus, nrog rau kev ua haujlwm zoo thaum tshav kub kub thiab nplaim taws, tshwj xeeb tshaj yog rau cov cables ua haujlwm hauv qhov kub thiab txias, xws li cov faus hauv av, tshwj xeeb yuav tsum tau them nyiaj rau lawv cov cua sov ua haujlwm.
Rwb thaiv tsev theem thiab tiv thaiv qib:Lub rwb thaiv tsev ntawm cov hluav taws xob cables rau kev xa ncaj qha tam sim no yuav tsum ua kom tau raws li qhov yuav tsum tau muaj ntawm sab hauv overvoltage; Qhov cuam tshuam nrog qhov voltage ntawm cov cables hauv kev sib txuas lus yuav tsum tau ua raws li cov qauv kev cai. Tsis tas li ntawd, qhov cuam tshuam ntawm txoj kev tso cable rau ntawm cov ntaub ntawv rwb thaiv tsev kuj yuav tsum tau xav txog.
Tam sim no nqa peev xwm kho qhov tseem ceeb:Kho qhov tseeb tam sim no nqa lub peev xwm ntawm lub cable raws li cov txheej txheem sib txawv (kev faus ncaj qha, cov yeeb nkab nkag, thiab lwm yam), ib puag ncig kub, thiab lwm yam. Piv txwv li, nyob rau hauv qhov kub thiab txias, lub peev xwm nqa ntawm cov cables tam sim no yuav txo qis, yog li nws yuav tsum tau tawm ntawm qee qhov npoo thaum xaiv.
Kab poob thiab voltage poob tswj:Txhawm rau kom ntseeg tau qhov ua tau zoo ntawm cov kab ke, cov kab poob ntawm photovoltaic DC cables feem ntau yuav tsum tsis pub tshaj 2%, thaum lub zog poob ntawm DC sab cables feem ntau yuav tsum tau tswj ntawm 1% thiab 2%.
Kev xaiv ntawm cable hom:Muaj cov kev cai sib txawv rau cov hom cable hauv cov ntawv thov sib txawv. Piv txwv li, rau cov khoom siv hluav taws xob txawb lossis cov xwm txheej uas muaj kev ntseeg tshwj xeeb, nws raug nquahu kom siv cov tub ntxhais tooj liab cables.
Kev lag luam tus qauv ua raws li:Kev xaiv cable yuav tsum tau xa mus rau cov qauv tseem ceeb hauv tebchaws, xws li GB50217-2007 "Code for Design of Cables in Power Engineering", nrog rau cov qauv luam tawm los ntawm International Electrotechnical Commission (IEC), kom ntseeg tau tias kev xaiv ua raws qhov tseeb technical specifications.
Txoj cai coj
1. Kev thov ib puag ncig
Nws yog ib qho tsim nyog yuav tsum tau qhia meej txog cov xwm txheej ib puag ncig hauv qab uas lub cable yuav raug teeb tsa. Yog siv sab hauv tsev, xaiv cov kab hluav taws xob uas tsis tas yuav muaj cov txheej txheem tiv thaiv ntxiv; Thiab cov kab hluav taws xob sab nraum zoov yuav tsum xav txog yam xws li kev tiv thaiv UV, kev tiv thaiv dej, thiab kev tiv thaiv txias. Tsis tas li ntawd, nws yog ib qho tsim nyog los ntsuas seb puas muaj qhov kub thiab txias, qhov kub thiab txias, tshuaj lom neeg, roj stains, lossis lwm yam mob hnyav nyob ib puag ncig, uas tuaj yeem cuam tshuam rau kev xaiv cov cables.
2. theem voltage
Kev txiav txim siab qhov siab tshaj qhov hluav taws xob uas lub cable xav tau los tiv thaiv yog ib kauj ruam tseem ceeb. Qhov ntsuas hluav taws xob ntawm cov kab hluav taws xob yuav tsum siab dua lossis sib npaug ntawm qhov kev ua haujlwm tiag tiag ntawm lub kaw lus kom muaj kev nyab xeeb thiab kev ntseeg tau. Piv txwv li, nyob rau hauv photovoltaic systems, kev khiav hauj lwm voltage ntawm DC sab feem ntau yog 600V los yog siab dua, yog li ntawd, cables ntawm tus coj voltage theem yuav tsum tau xaiv.
3. Tam sim no load
Nws yog ib qho tseem ceeb los txiav txim siab qhov chaw hla ntawm ib qho cable raws li qhov siab tshaj plaws tam sim no nws xav tau nqa. Raws li kev suav cov mis, ib theem I=P/(U × cos Φ), peb theem I=P/(√ 3 × U × cos Φ), qhov twg P yog hwj chim ( W), U yog voltage (V), thiab cos Φ yog lub hwj chim yam (feem ntau coj li 0.8). Rau qhov tshwj xeeb daim ntawv thov scenarios, xws li photovoltaic fais fab nroj tsuag, nws tseem yuav tsum tau xav txog qhov tso zis tam sim no ntawm cov khoom thiab qhov siab tshaj plaws tso zis tam sim no ntawm lub inverter.
4. Cable hom
Kev teeb tsa ruaj khov: Tsim nyog rau feem ntau cov xwm txheej hauv cov tsev, feem ntau siv xws li cross-linked polyethylene (XLPE) insulated cables, polyvinyl chloride (PVC) insulated cables, thiab lwm yam.
Kev teeb tsa txawb: Thaum cov cables yuav tsum tau nquag khoov lossis vibrated, xws li hauv cov cuab yeej siv tshuab, cov roj hmab insulated cables lossis silicone roj hmab insulated cables yuav tsum raug xaiv vim lawv muaj kev yooj yim dua thiab hnav tsis kam.
5. Cov ntaub ntawv rwb thaiv tsev
Kev xaiv cov khoom siv rwb thaiv tsev nyob ntawm qhov kev siv tshwj xeeb scenario. Piv txwv li, XLPE rwb thaiv tsev yog tsim rau kub thiab high voltage ib puag ncig, thaum PVC rwb thaiv tsev yog tsim nyog rau siv nyob rau hauv ib puag ncig.
6. Cov ntaub qhwv ntaub
Cov ntaub ntawv sheath yuav tsum sib phim rau qhov chaw siv. Cov ntaub ntawv sheath muaj xws li PVC sheath, PE sheath, roj hmab sheath, thiab lwm yam. Rau cov xwm txheej uas yuav tsum tau tshwj xeeb xws li roj tsis kam, acid thiab alkali tsis kam, txias tsis kam, kub tsis kam, thiab lwm yam, yuav tsum tau xaiv tshwj xeeb cables.
7. Cov khoom siv hluav taws xob
Cov khoom siv hluav taws xob feem ntau muab faib ua ob hom: tooj liab thiab txhuas. Tooj liab muaj cov conductivity zoo dua li txhuas, tab sis nws cov nqi siab dua; Aluminium conductor cables yog sib dua thiab qis dua tus nqi, tab sis cov tub ntxhais tooj liab cables muaj peev xwm nqa tau ntau dua tam sim no thiab ua kom muaj cua sov zoo dua nyob rau hauv tib qhov chaw hla.
8. nplaim retardancy thiab hluav taws tsis kam ua haujlwm
Hauv qee qhov chaw tshwj xeeb, xws li hauv cov tsev, tej zaum yuav tsim nyog siv cov kab hluav taws xob uas muaj cov nplaim hluav taws kub hnyiab los yog cov khoom siv hluav taws xob los txhim kho kev nyab xeeb.
9. Kev lag luam
Thaum kawg, thaum ua tau raws li tag nrho cov kev cai thiab kev nyab xeeb cov qauv, tus nqi-zoo ntawm cables kuj yuav tsum tau xav txog. Qhov no txhais tau tias tsis yog tsuas yog xav txog tus nqi pib yuav khoom xwb, tab sis kuj tseem muaj cov nqi kho mob mus sij hawm ntev thiab lwm yam nqi uas yuav muaj peev xwm.
10. Cov qauv thiab specifications
Nws yog ib qho tseem ceeb heev uas yuav tsum tau ua raws li lub teb chaws thiab cov qauv kev lag luam thiab cov kev qhia tshwj xeeb, xws li GB / T, IEC, ASTM, thiab lwm yam. Cov qauv no muab cov kev cai tshwj xeeb rau kev tsim, kev tsim, kev sim, thiab lwm yam, kom ntseeg tau tias cov khoom sib xws thiab kev ntseeg tau ntawm cov khoom. zoo.
Piv txwv
Piv txwv tias peb yuav tsum tsim cov phiaj xwm cable rau qhov chaw nres tsheb loj hauv av photovoltaic, thov mus saib cov kauj ruam nram qab no:
DC cable xaiv
Cov khoom siv rau lub thawv sib txuas: Rau DC cable ntawm photovoltaic module thiab lub thawv sib txuas, xav txog qhov siv tam sim no, PV1-F yog xaiv 1 * 6mm ² specification cable. Hom kab no muaj lub zog zoo txhua yam thiab kev ua haujlwm ntawm hluav taws xob, thiab yog qhov tsim nyog rau lub sijhawm ntev rau kev cuam tshuam rau sab nraud ib puag ncig.
Los ntawm lub thawv sib txuas mus rau inverter: Qhov kev ncua deb no luv luv, tab sis yog tias qhov tam sim no siab, yuav tsum muaj qhov loj dua ntawm qhov chaw sib txuas, xws li PV1-F 1 * 10mm ² lossis loj dua. Nyob rau tib lub sijhawm, qhov teeb meem poob siab yuav tsum tau txiav txim siab los xyuas kom meej tias nws tsis pub dhau qhov feem pua tau teev.
Kev xaiv ntawm kev sib txuas lus cables
Inverter tso zis rau transformer: Qhov no ntawm lub cable yog lub luag hauj lwm rau kev xa cov hloov dua siab tshiab AC zog, yog li nws yog tsim nyog los xav txog seb nws tam sim no nqa peev xwm txaus los tiv nrog lub siab tshaj plaws zog tso zis. Feem ntau, peb cores los yog multi-core armored cables yog siv, thiab cov khoom yuav tsum raug xaiv raws li tooj liab lossis txhuas core raws li qhov tseeb.
Kev tuav tes tshwj xeeb
Daim ntawv thov ntawm ob-sided photovoltaic modules: Nrog rau kev siv ntau dua ntawm ob sab photovoltaic modules, kev xaiv cable kuj yuav tsum xav txog qhov kev nce ntxiv tam sim no coj los ntawm kev nce rov qab. IEC 61215: Nyob rau hauv 2021, ob-sided nameplate hnub ci irradiance (BNPI) thiab ob-sided kev cia siab rau hnub ci irradiance (BSI) tau qhia, uas yuav pab tau zoo soj ntsuam cov txheej xwm ua hauj lwm ntawm ob-sided Cheebtsam thiab kho cable xaiv raws li.
Yuav ua li cas kom tsis txhob cable kab poob thiab voltage poob?
Cov txheej txheem technical:
1. Tsim nyog xaiv cable specifications
Xaiv cov xaim hla ntu raws li cov khoom thauj tam sim no: rau qhov luv luv, txwv cov hlau hla ntu raws li cov cua sov (kev nyab xeeb tam sim no muaj peev xwm nqa tau), thiab rau qhov kev ncua deb, xaiv cov xaim hla ntu raws li qhov hluav taws xob tsis zoo ntawm lub hauv paus ntawm kev nyab xeeb tam sim no nqa peev xwm los xyuas kom meej tias qhov kev khiav hauj lwm voltage ntawm qhov chaw thauj khoom yog nyob rau hauv qhov tsim nyog ntau yam. Piv txwv li, thaum xam lub hwj chim 50kW thiab 300 meter ntev kab, yog siv 25mm ² tooj liab tub ntxhais cable, ib-theem voltage poob yog 20V, thiab tag nrho voltage poob ntawm ob theem nce mus txog 40V, ua rau lub davhlau ya nyob twg voltage. poob rau 360V; Tom qab siv cov cables nrog 35 square millimeter tooj liab cores los yog 50 square millimeter aluminium cores, lub davhlau ya nyob twg voltages tau khaws cia nyob ib ncig ntawm 370V thiab 366V, raws li qhov yuav tsum tau ua rau kev ua haujlwm ntawm cov khoom siv.
Xav txog qhov cuam tshuam ntawm ib puag ncig: Thaum qhov kub thiab txias nce, qhov kev tiv thaiv ntawm lub cable nce, thiab qhov hluav taws xob poob kuj nce ntxiv. Yog li ntawd, kev siv cov cables nyob rau hauv high-temperature ib puag ncig yuav tsum tau zam, thiab rau cov khoom uas ua hauj lwm tsis tu ncua rau lub sij hawm ntev, nws raug nquahu kom siv cov cables ntawm ib tug loj specification kom ruaj khov nyob rau hauv voltage fluctuations.
2. Optimize kab tsim thiab tso
Shorten lub hwj huam mov nrug: Txiav txim siab txoj hauj lwm zoo ntawm lub chaw thauj khoom kom txo lossis zam qhov tshwm sim ntawm tshaj qhov hluav taws xob qhov hluav taws xob. Qhov kev xav tau dav dav rau lub hwj huam hluav taws xob hluav taws xob ntawm cov kab hluav taws xob nyob deb nroog yog tias 400V kab yuav tsum tsis pub dhau ib qho, uas txo cov kab poob qis.
Txhim kho txoj hauv kev hauv Circuit Court: Los ntawm kev txhim kho cov kab sib txuas tshiab thiab kev xa tawm los yog kho cov kab uas twb muaj lawm, suav nrog kev ua kom zoo, tsim kom muaj cov hlau hla ntu, thiab xaiv cov khoom tsim nyog xws li cov khoom siv hluav taws xob tshiab, txo cov hluav taws xob tiv thaiv thiab zoo dua conductivity. tuaj yeem ua tiav.
Kev npaj tsim nyog ntawm kev hloov cov ntsiab lus: Cov kab hluav taws xob muaj cov kev cai nruj rau kev tig lub vojvoog. Thaum lub sij hawm kev tsim kho, kev siv zog yuav tsum tau ua kom txo qis torque ntawm cov cables, thiab kev khoov ntuj yuav tsum tau khaws cia hauv txoj hlua xaim thiab cov khoom tshwj xeeb los tiv thaiv kev puas tsuaj sab hauv.
3. Txhim kho qhov system efficiency
Txhim kho lub zog zoo: Txhim kho cov khoom siv hluav taws xob rov ua haujlwm ntawm ob qho kawg ntawm kab, xws li cov tsev txhab nyiaj sib npaug, tuaj yeem txhim kho lub zog, txo qis inductive reactive zog, thiab yog li txo tus nqi tam sim no hauv kab, uas yuav pab txo cov kab poob.
Kev kho qhov sib npaug ntawm peb-theem loads: zoo dua qhov ntsuas peb-theem loads yog ib qho ntawm kev siv nyiaj txiag zoo tshaj plaws los txo qhov poob. Los ntawm kev faib cov neeg siv ib zaug mus rau theem A, B, thiab C kom txo qhov tam sim no ntawm cov kab nruab nrab, lub hom phiaj ntawm kev txo cov kab poob tuaj yeem ua tiav.
4. Txhim kho kev tswj hwm txhua hnub thiab kev saib xyuas
Kev tshuaj xyuas thiab kev saib xyuas tsis tu ncua: Tsim kom muaj kev tswj hwm kev tswj hwm, ua kev tshuaj xyuas ntawm thaj chaw uas muaj teeb meem tshwm sim, tam sim ntawd txheeb xyuas thiab daws cov teeb meem xws li rwb thaiv tsev laus, cov pob qij txha tsis zoo, thiab lwm yam, txhawm rau tiv thaiv lawv los ntawm kev nce mus rau qhov ua tsis tiav loj.
Siv cov cuab yeej thev naus laus zis: siv cov cuab yeej saib xyuas online zoo xws li cov txheej txheem kev soj ntsuam kev sib txuas sab nraud, hauv online fiber ntau optic ntsuas kub ntsuas tshuab, thiab cov cuab yeej siv hluav taws xob ib nrab, txhawm rau ntxiv dag zog rau lub sijhawm saib xyuas kev ua haujlwm cable, ceeb toom ntxov ntawm qhov tsis xws luag, thiab tiv thaiv lub zog. kev huam yuaj.