Kev nyab xeeb hluav taws xob ntawm kev faib khoom photovoltaic yog qhov tseem ceeb. Tsab ntawv xov xwm no piav qhia txog cov kev xav tau los ntawm cov khoom ntawm cov khoom siv, kev xaim, kev hloov pauv, thiab kev teeb tsa lub thawv xa khoom, xws li qhib hluav taws xob tiv thaiv hluav taws xob thiab hauv av ntawm cov khoom, cov txheej txheem tsim nyog, thiab kev xaiv cable. Tib lub sijhawm tshawb nrhiav kev pheej hmoo ntawm hluav taws xob to, taw qhia txog nws qhov kev puas tsuaj rau tib neeg kev noj qab haus huv, hais txog tias cov khoom siv tiv thaiv hluav taws xob uas tsis tu ncua thiab kev soj ntsuam kev nyab xeeb tsis tu ncua tuaj yeem tiv thaiv tau zoo, txhawm rau ua kom muaj kev nyab xeeb ntawm kev ua haujlwm thiab kev nyab xeeb ntawm cov neeg ua haujlwm.
1. Cov kev cai ntawm kev nyab xeeb hluav taws xob rau kev faib khoom photovoltaic installation
(1) Cov khoom siv installation
Qhib Circuit Court voltage tiv thaiv:Thaum txhim kho photovoltaic modules, yuav tsum tau them nyiaj mloog mus rau qhov tseeb hais tias cov modules yuav tsim qhib Circuit Court voltage nyob rau hauv lub teeb raug. Tshwj xeeb tshaj yog thaum muaj ntau yam khoom sib txuas hauv series, qhov voltage yuav nce thiab nce. Cov neeg ua haujlwm hauv kev teeb tsa yuav tsum xyuas kom meej tias thaum lub sijhawm ua haujlwm, tib neeg lub cev tsis tuaj yeem cuam tshuam nrog cov ncej zoo thiab tsis zoo ntawm cov khoom siv tib lub sijhawm los tiv thaiv hluav taws xob poob siab. Piv txwv li, siv cov cuab yeej insulated rau cov khoom sib txuas thiab kho kom tsis txhob raug hluav taws xob conductivity ntawm lub cuab yeej.
Cov khoom siv grounding:Tus ncej ntawm photovoltaic modules feem ntau yuav tsum tau grounded. Qhov no yog los qhia txog qhov tam sim no rau hauv av nyob rau hauv cov ntaub ntawv ntawm kev tiv thaiv tsis ua hauj lwm, xws li xob laim tawm tsam los yog kev puas tsuaj ntawm cov hluav taws xob sab hauv, kom tsis txhob muaj kev pheej hmoo ntawm hluav taws xob poob rau tib neeg lub cev los ntawm cov khoom siv hluav taws xob. Kev tiv thaiv hauv av yuav tsum ua raws li cov qauv kev nyab xeeb hauv zej zog, feem ntau yuav tsum muaj kev tiv thaiv hauv av kom tsawg dua li tus nqi tshwj xeeb (xws li 10 Ω), thiab kev sib txuas hauv av yuav tsum ruaj khov thiab txhim khu kev qha.
(2) Kev ruaj ntseg ntawm kev sib txuas
Cable xaiv:Xaiv qhov tsim nyog cable los xa cov hluav taws xob photovoltaic yog qhov tseem ceeb heev. Qhov ntsuas qhov ntsuas hluav taws xob, lub peev xwm nqa tam sim no thiab lwm yam ntawm cov kab hluav taws xob yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm lub kaw lus. Piv txwv li, rau lub zog hluav taws xob faib hluav taws xob photovoltaic, nws yog ib qho tsim nyog los xaiv cov kab hluav taws xob uas tuaj yeem tiv taus qhov hluav taws xob siab thiab siab tam sim no los tiv thaiv cable overheating los ntawm qhov ua rau hluav taws kub lossis rwb thaiv tsev puas.
Txoj kev txuas:Kev tso cable yuav tsum tsis txhob muaj kev puas tsuaj. Feem ntau, nws yog nteg los ntawm cov kav dej lossis cable tais. Thaum tso cov kab hluav taws xob sab nraum zoov, yuav tsum xav txog yam xws li kev tiv thaiv dej, tiv thaiv tshav ntuj, thiab kev tiv thaiv kab mob tom. Yog hais tias lub cable raug rau ib puag ncig hnyav rau lub sijhawm ntev, nws cov txheej txheej rwb thaiv tsev yog qhov ua rau kev laus thiab kev puas tsuaj, uas tuaj yeem ua rau muaj kev sib tsoo. Nyob rau tib lub sijhawm, qhov sib txuas ntawm cov cable yuav tsum tau zoo insulated, xws li siv cov kev sib txuas ntawm cable thiab rwb thaiv tsev daim kab xev rau kev sib khi thiab qhwv.
(3) Inverter installation
Hluav taws xob clearance thiab creepage nrug:Muaj ib tug high voltage Circuit Court nyob rau hauv lub inverter. Thaum txhim kho lub inverter, nws yog ib qhov tsim nyog los xyuas kom meej txaus hluav taws xob clearance thiab creepage nrug ntawm nws cov khoom sab hauv. Hluav taws xob clearance yog hais txog qhov luv tshaj plaws nyob deb ntawm ob yam conductive, thaum creepage nrug yog hais txog txoj kev luv tshaj plaws ntawm ob yam conductive ntsuas raws li rwb thaiv tsev nto. Yog tias ob qhov kev ncua deb no tsis txaus, nws yuav ua rau arc tawm, cov khoom siv puas tsuaj, thiab ua rau hluav taws kub.
Kev sib txuas hauv av:Cov hlau casing ntawm lub inverter yuav tsum muaj kev ntseeg siab hauv av. Nyob rau hauv txoj kev no, thaum muaj hluav taws xob txhaum nyob rau hauv lub inverter uas ua rau lub casing los ua electrified, tam sim no yuav tsum tau nkag mus rau hauv av kom muaj kev ruaj ntseg ntawm tus kheej. Tsis tas li ntawd, kev sib txuas ntawm cov av hauv av yuav tsum tau txuas nrog cov phiaj xwm hauv av ntawm tag nrho cov txheej txheem photovoltaic kom tsim tau cov av ua tiav.
(4) Kev teeb tsa lub thawv xa khoom
Kev tiv thaiv qib:Lub thawv xa khoom yuav tsum muaj qhov tsim nyog tiv thaiv kom tsis txhob muaj plua plav, dej, thiab lwm yam los ntawm kev nkag mus rau sab hauv ntawm lub thawv xa khoom thiab ua rau luv luv. Piv txwv li, cov thawv ntim khoom xa tawm sab nraum zoov yuav tsum muaj kev tiv thaiv qib tsawg kawg nkaus IP54, uas tuaj yeem tiv thaiv cov khoom txawv teb chaws los ntawm kev nkag mus thiab dej los ntawm kev sib tsoo.
Kev xaiv ntawm switchgear:Lub switchgear nyob rau hauv lub thawv faib, xws li Circuit Court breakers, fuses, thiab lwm yam, yuav tsum tau xaiv kom tsim nyog raws li qhov tam sim no, voltage theem, thiab luv luv-circuit tiv thaiv yuav tsum tau ntawm lub photovoltaic system. Cov cuab yeej hloov pauv no tuaj yeem txiav tawm tam sim ntawd thiab tiv thaiv cov khoom siv thiab cov neeg ua haujlwm kev nyab xeeb thaum lub kaw lus overload, luv Circuit Court thiab lwm yam ua txhaum.
2. Kev pheej hmoo ntawm kev xau thiab tiv thaiv kev puas tsuaj rau cov neeg ua haujlwm
Yog hais tias lub tshuab hluav taws xob photovoltaic xaim xaim, nws tuaj yeem ua rau muaj kev phom sij rau tus kheej kev nyab xeeb. Thaum tib neeg lub cev los rau hauv kev sib cuag nrog cov khoom xau, qhov tam sim no dhau los ntawm tib neeg lub cev tuaj yeem ua rau hluav taws xob raug mob. Thaum qhov tam sim no nce mus txog ib theem (feem ntau suav tias yog siab dua 10mA rau AC thiab siab dua 50mA rau DC), nws tuaj yeem ua rau cov leeg nqaij, ua tsis taus pa, thiab txawm tias lub plawv nres.
Txhawm rau tiv thaiv hluav taws xob los ntawm kev ua rau muaj kev phom sij rau cov neeg ua haujlwm, cov khoom siv hluav taws xob faib hluav taws xob feem ntau nruab cov khoom siv tiv thaiv tam sim no (RCD). RCD tuaj yeem ntes cov seem tam sim no hauv Circuit Court. Thaum cov seem tam sim no tshaj qhov nqi teev (xws li 30mA), RCD yuav txiav tawm lub voj voog nyob rau lub sijhawm luv luv (feem ntau tsis pub tshaj 0.1 vib nas this) kom tsis txhob muaj hluav taws xob poob rau tib neeg lub cev. Nyob rau tib lub sijhawm, kev tshuaj xyuas hluav taws xob tsis tu ncua ntawm cov tshuab photovoltaic, suav nrog kev ntsuas kev tiv thaiv hluav taws xob, kev ntsuas kev tiv thaiv hauv av, thiab lwm yam, tuaj yeem ua kom pom sai thiab daws teeb meem xws li rwb thaiv tsev puas thiab tsis zoo hauv av, txo qhov kev pheej hmoo ntawm hluav taws xob to.
Nyob rau hauv tus txheej txheem ntawm kev faib photovoltaic installation, nruj me ntsis ua raws li cov kev cai ntawm kev nyab xeeb hluav taws xob thiab kev tiv thaiv kev tiv thaiv zoo tuaj yeem ua rau kom muaj kev nyab xeeb ntawm lub cev thiab kev nyab xeeb ntawm tus kheej.