Cov thev naus laus zis hauv kev lag luam photovoltaic tab tom txhim kho sai. Lub zog ntawm tus kheej cov khoom yog nce, thiab tam sim no ntawm txoj hlua sib dhos kuj nce. Tam sim no ntawm siab - cov khoom siv fais fab tau mus txog 17A lossis siab dua. Hauv kev tsim qauv, siv cov khoom siv hluav taws xob siab thiab qhov chaw tshwj xeeb tsim nyog tuaj yeem txo tus nqi pib thiab kilowatt- teev nqi ntawm qhov system. Tus nqi ntawm AC thiab DC cables nyob rau hauv lub system tsis yog tsawg. Yuav ua li cas tsim thiab xaiv yuav tsum tau ua kom txo tau cov nqi?
DC cables raug ntsia sab nraum zoov. Feem ntau, nws raug pom zoo kom xaiv photovoltaic- cov kab tshwj xeeb uas tau irradiated thiab hla- txuas. Tom qab tau irradiated los ntawm siab- lub zog hluav taws xob cov kab hluav taws xob, cov qauv molecular ntawm cov ntaub ntawv rwb thaiv tsev ntawm cov kab hluav taws xob hloov pauv los ntawm cov kab tawm mus rau peb- cov qauv sib txuas. Cov qib ntsuas kub tau nce los ntawm tsis yog -hla- txuas 70℃mus rau 90℃, 105℃, 125℃, 135℃, txawm 150℃, thiab tam sim no - nqa lub peev xwm tau nce los ntawm 15-50% piv rau tib lub ntsiab lus. Nws tuaj yeem tiv taus qhov kub thiab txias hloov thiab kev yaig tshuaj lom neeg thiab tuaj yeem siv sab nraum zoov rau ntau tshaj 25 xyoo. Thaum xaiv DC cables, nws yog ib qho tsim nyog yuav tsum xaiv cov khoom lag luam los ntawm cov chaw tsim khoom niaj hnub nrog cov ntawv pov thawj cuam tshuam kom ntseeg tau ntev - siv sab nraum zoov. Tam sim no, feem ntau siv DC cables rau photovoltaic systems yog PV1-F1 * 4 nrog ib tug 4 square mm cross-section, tab sis raws li qhov tam sim no ntawm photovoltaic Cheebtsam nce thiab lub zog ntawm txhua inverter nce, qhov ntev ntawm DC cables kuj nce, thiab 6 square mm DC cables kuj tau siv ntau dua. Raws li cov lus qhia tshwj xeeb, nws feem ntau pom zoo tias qhov poob ntawm photovoltaic DC yuav tsum tsis pub tshaj 2%. Peb siv tus qauv no los tsim cov kev xaiv DC cables. Kev ua haujlwm ntawm PV1-F1 * 4 mm² DC cable yog 4.6 mΩ / m, thiab qhov tsis kam ntawm PV6 mm² DC cable yog 3.1 mΩ / m.
Txhawm rau txo cov nqi hluav taws xob, cov chaw siv hluav taws xob photovoltaic tsis tshua teeb tsa cov khoom siv thiab cov tshuab hluav taws xob hauv qhov sib piv 1: 1. Hloov chaw, qee yam dhau - kev teeb tsa yog tsim los ntawm cov teeb pom kev zoo thiab qhov xav tau ntawm qhov project. Piv txwv li, rau 110KW module, 100KW inverter raug xaiv, thiab qhov siab tshaj plaws AC tso zis tam sim no yog kwv yees li 158A. AC cables tuaj yeem xaiv raws li qhov siab tshaj plaws tso zis tam sim no ntawm inverter. Tsis muaj teeb meem ntau npaum li cas cov khoom raug teeb tsa, AC input tam sim no ntawm lub inverter yuav tsis dhau qhov siab tshaj plaws tso zis tam sim no ntawm lub inverter.
Feem ntau AC tooj liab cables rau photovoltaic systems muaj xws li ntau yam qauv xws li BVR thiab YJV. BVR txhais tau hais tias tooj liab tub ntxhais polyvinyl chloride insulated saj zawg zog hlau, thiab YJV yog cross-txuas polyethylene insulated fais fab cable. Thaum xaiv, nws yog ib qho tsim nyog yuav tsum tau xyuam xim rau qib voltage thiab qib kub ntawm lub cable, thiab xaiv cov nplaim hluav taws xob - hom retardant. Cable specifications yog sawv cev los ntawm tus naj npawb ntawm cores, nominal cross-section, thiab qib voltage: ib leeg-core ceg cable specification sawv cev, 1 * nominal cross-section, xws li: 1 * 25mm 0.6/1kV, sawv cev rau 25 square cable. Multi-core twisted ceg cable specification sawv cev, tus naj npawb ntawm cables nyob rau hauv tib lub voj voog * nominal cross-section, xws li: 3*50+2*25mm 0.6/1KV, sawv cev rau 3 50 square kub xov hlau, 1 25 square neutral hlau, thiab 1 25 square av
Dab tsi yog qhov txawv ntawm ib qho - tub ntxhais cables thiab ntau - tub ntxhais cables?
Ib qho - tub ntxhais cable yog hais txog cable uas tsuas muaj ib tus neeg xyuas pib hauv ib txheej txheej insulating. Ib tug multi- tub ntxhais cable yog ib tug cable nrog ntau insulated cores. Hais txog kev ua haujlwm rwb thaiv tsev, ob qho tib si - tub ntxhais cables thiab ntau- tub ntxhais cables yuav tsum ua raws li cov qauv hauv tebchaws. Qhov sib txawv ntawm ntau- tub ntxhais cables thiab ib qho - tub ntxhais cables nyob rau hauv tias ob qhov kawg ntawm ib zaug - tub ntxhais cable yog ncaj qha hauv av, thiab cov hlau thaiv txheej ntawm cov cable kuj tseem tuaj yeem tsim cov khoom siv hluav taws xob, ua rau poob; cov sum ntawm cov dej ntws los ntawm peb cov tub ntxhais nyob ntawm tej yog xoom, thiab yeej tsis muaj induced voltage ntawm cov hlau shielding txheej ntawm lub cable. Nyob rau hauv cov nqe lus ntawm lub peev xwm Circuit Court, rau tib tus ntoo khaub lig-sectional cheeb tsam, qhov ntsuas tam sim no nqa peev xwm ntawm ib qho -core cable yog ntau dua li ntawm peb- tub ntxhais cable; qhov kev ua tau zoo ntawm cov cua sov ntawm ib qho - tub ntxhais cable yog ntau dua li ntawm ntau- tub ntxhais cable. Nyob rau hauv tib lub load lossis luv luv-circuit tej yam kev mob, lub tshav kub tsim los ntawm ib tug -core cable yog tsawg tshaj li ntawm ib tug multi-core cable, uas muaj kev ruaj ntseg dua. Hais txog kev tso cable, ntau- cov tub ntxhais cables yooj yim dua thiab yooj yim dua rau nteg, thiab cov cables muaj txheej sab hauv thiab ob txheej txheej tiv thaiv ob npaug. Los ntawm kev teeb tsa ntawm lub taub hau cable, nws yooj yim dua rau khoov ib qho - tub ntxhais cable thaum lub sijhawm teeb tsa, tab sis qhov nyuaj ntawm kev tso rau qhov ntev yog ntau dua li ntawm ntau- tub ntxhais cables. Los ntawm kev teeb tsa ntawm lub taub hau cable, kev teeb tsa ntawm ib qho -core cable taub hau yog yooj yim dua thiab kev xaim tau yooj yim dua. Hais txog tus nqi, tus nqi tsev ntawm ntau- tub ntxhais cables yog me ntsis siab dua li ntawm ib qho - tub ntxhais cables.
Lub voj voog ntawm lub tshuab hluav taws xob photovoltaic tau muab faib ua ntu DC thiab AC ntu. Ob qhov chaw ntawm Circuit Court no yuav tsum tau xaim nyias. DC ib feem yog txuas nrog cov khoom, thiab AC ib feem yog txuas nrog rau daim phiaj fais fab. Muaj ntau dua DC cables hauv qhov loj thiab nruab nrab - qhov chaw nres tsheb fais fab. Txhawm rau pab txhawb kev txij nkawm yav tom ntej, tus lej xov tooj ntawm txhua lub cable yuav tsum tau kho kom ruaj khov. Cais cov hlau tsis muaj zog thiab cov hlau tsis muaj zog. Yog tias muaj cov kab teeb liab, xws li 485 kev sib txuas lus, lawv yuav tsum tau sib cais kom tsis txhob cuam tshuam. Thaum xaim, npaj cov kav dej thiab txuas hniav, thiab sim tsis txhob nthuav tawm cov kab. Thaum xaim horizontally thiab vertically, nws yuav zoo dua. Sim kom tsis txhob muaj kab sib txuas hauv cov kav dej thiab tus choj, vim nws tsis yooj yim rau kev saib xyuas. Nyob rau hauv tag nrho cov photovoltaic system, cables yog ib feem tseem ceeb heev, thiab tus nqi ntawm lub system yog nce. Thaum tsim lub chaw nres tsheb fais fab, peb yuav tsum xyuas kom muaj kev ruaj ntseg ntawm lub chaw nres tsheb fais fab thaum txo cov nqi hluav taws xob ntau li ntau tau. Yog li ntawd, kev tsim thiab xaiv ntawm AC thiab DC cables rau lub tshuab photovoltaic yog qhov tseem ceeb tshwj xeeb. Tsis tas li ntawd, cov xov hlau tsis tsim nyog thiab cables tsis yog tsuas yog cuam tshuam rau peb txoj kev siv xwb tab sis kuj cuam tshuam ncaj qha rau peb lub neej kev nyab xeeb. Yog li ntawd, peb yuav tsum tau ceev faj thiab xaiv high{16}}cov cables zoo nrog kev ruaj ntseg zoo.
Ua lub luag haujlwm rau peb lub neej thiab tsim kom muaj kev nyab xeeb tsis yog lub hom phiaj nkaus xwb uas Asian cables ib txwm ua raws, tab sis kuj yog qhov peb txhua tus yuav tsum ua.
