Cov vaj huam sib luag hnub ci vaj huam sib luag feem ntau yog muag nrog cov nyiaj qiv mus sij hawm ntev lossis qiv, nrog cov tswv tsev nkag mus rau cov ntawv cog lus ntawm 20 xyoo lossis ntau dua. Tab sis ntev npaum li cas panels yuav kav ntev npaum li cas, thiab lawv muaj zog npaum li cas?
Lub neej vaj huam sib luag nyob ntawm ntau yam, suav nrog kev nyab xeeb, hom qauv, thiab cov txheej txheem racking siv, thiab lwm yam. Txawm hais tias tsis muaj qhov tshwj xeeb "hnub kawg" rau lub vaj huam sib luag ib se, poob ntawm kev tsim khoom ntau dhau sijhawm feem ntau yuam cov khoom siv nyiaj laus.
Thaum txiav txim siab seb puas yuav ua kom koj lub vaj huam sib luag khiav 20-30 xyoo yav tom ntej, lossis nrhiav kev txhim kho nyob rau lub sijhawm ntawd, kev soj ntsuam cov zis theem yog qhov zoo tshaj plaws los txiav txim siab paub.
Kev puas tsuaj
Kev poob ntawm cov khoom lag luam dhau sijhawm, hu ua degradation, feem ntau tsaws ntawm li 0.5% txhua xyoo, raws li National Renewable Energy Laboratory (NREL).
Cov neeg tsim khoom feem ntau xav txog 25 txog 30 xyoo ib qho chaw uas txaus degradation tau tshwm sim qhov twg nws yuav yog lub sijhawm los txiav txim siab hloov lub vaj huam sib luag. Tus qauv kev lag luam rau kev tsim khoom yog 25 xyoo ntawm lub hnub ci module, hais tias NREL.
Muab qhov 0.5% benchmark txhua xyoo degradation tus nqi, ib tug 20-xyoo-laus vaj huam sib luag muaj peev xwm tsim tau txog 90% ntawm nws thawj lub peev xwm.
Vaj huam sib luag zoo tuaj yeem muaj qee yam cuam tshuam rau tus nqi degradation. NREL tshaj tawm cov tuam txhab hwm zoo xws li Panasonic thiab LG muaj tus nqi kwv yees li 0.3% hauv ib xyoos, thaum qee lub npe txo qis ntawm tus nqi siab txog 0.80%. Tom qab 25 xyoo, cov khoom hwm zoo no tseem tuaj yeem tsim 93% ntawm lawv cov khoom qub, thiab cov piv txwv siab dua tuaj yeem tsim tau 82.5%.
(Nyeem: “Cov kws tshawb fawb soj ntsuam kev degradation hauv PV systems laus dua 15 xyoo“)
Ib feem me me ntawm kev degradation yog vim muaj qhov tshwm sim hu ua qhov muaj peev xwm induced degradation (PID), ib qho teeb meem uas tau ntsib los ntawm qee qhov, tab sis tsis yog tag nrho, panels. PID tshwm sim thaum lub vaj huam sib luag qhov hluav taws xob muaj peev xwm thiab cov xau tam sim no tsav ion txav mus rau hauv lub module ntawm cov khoom siv semiconductor thiab lwm yam khoom ntawm lub module, xws li iav, mount, lossis ncej. Qhov no ua rau lub module lub hwj chim tso zis muaj peev xwm poob, nyob rau hauv tej rooj plaub ho ho.
Qee cov tuam txhab tsim lawv cov vaj huam sib luag nrog PID-resistant cov ntaub ntawv nyob rau hauv lawv cov iav, encapsulation, thiab diffusion barriers.
Tag nrho cov vaj huam sib luag kuj raug kev txom nyem ib yam dab tsi hu ua lub teeb-induced degradation (LID), nyob rau hauv uas panels poob efficiency nyob rau hauv thawj teev ntawm raug rau lub hnub. LID sib txawv ntawm vaj huam sib luag rau vaj huam sib luag raws li qhov zoo ntawm crystalline silicon wafers, tab sis feem ntau ua rau ib zaug, 1-3% poob hauv kev ua haujlwm, hais tias kev sim kuaj PVEL, PV Evolution Labs.
Huab cua
Qhov raug rau huab cua puag yog tus tsav tsheb loj hauv vaj huam sib luag degradation. Thaum tshav kub kub yog qhov tseem ceeb ntawm ob qho tib si lub sijhawm ua haujlwm ntawm lub vaj huam sib luag thiab kev degradation dhau sijhawm. Thaum tshav kub kub tsis zoo cuam tshuam rau kev ua haujlwm thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob,raws li NREL.
Los ntawm kev txheeb xyuas cov chaw tsim khoom cov ntaub ntawv, lub vaj huam sib luag ntawm qhov kub thiab txias tuaj yeem pom, uas yuav ua rau pom lub vaj huam sib luag muaj peev xwm ua tau nyob rau hauv qhov kub siab dua.
Tus coefficient piav qhia txog qhov ua tau zoo npaum li cas ntawm lub sijhawm tiag tiag poob los ntawm txhua qib ntawm Celsius nce siab tshaj qhov ntsuas kub ntawm 25 degrees Celsius. Piv txwv li, qhov kub coefficient ntawm -0.353% txhais tau hais tias rau txhua txhua degree Celsius saum toj no 25, 0.353% ntawm tag nrho cov peev xwm tsim tau poob.
Thaum tshav kub kub exchanger tsav vaj huam sib luag degradation los ntawm tus txheej txheem hu ua thermal cycling. Thaum nws sov, cov ntaub ntawv nthuav dav, thiab thaum kub qis, lawv cog lus. Qhov kev txav no maj mam ua rau microcracks tsim nyob rau hauv lub vaj huam sib luag lub sijhawm, txo cov zis.
Hauv nws lub xyooModule Score Card kawm, PVEL tau tshuaj xyuas 36 qhov kev ua haujlwm hnub ci hauv Is Nrias teb, thiab pom muaj kev cuam tshuam loj heev los ntawm kev ua kom sov. Qhov nruab nrab txhua xyoo degradation ntawm tej yaam num tsaws ntawm 1.47%, tab sis arrays nyob rau hauv txias, roob roob degraded ntawm ze li ntawm ib nrab tus nqi, ntawm 0.7%.
Kev txhim kho kom zoo tuaj yeem pab daws cov teeb meem kub ntxhov. Cov vaj huam sib luag yuav tsum tau nruab ob peb nti saum lub ru tsev, kom cov cua convective tuaj yeem ntws hauv qab thiab txias cov khoom siv. Cov ntaub ntawv xim xim tuaj yeem siv rau hauv kev tsim vaj huam sib luag los txwv kev nqus cua sov. Thiab cov khoom xws li inverters thiab cov khoom sib txuas, uas nws qhov kev ua tau zoo yog qhov tshwj xeeb rau cov cua sov, yuav tsum nyob hauv qhov chaw ntxoov ntxoo,tau qhia CED Greentech.
Cua yog lwm yam huab cua uas tuaj yeem ua rau muaj kev puas tsuaj rau lub hnub ci vaj huam sib luag. Cov cua muaj zog tuaj yeem ua rau flexing ntawm cov panels, hu ua dynamic mechanical load. Qhov no kuj ua rau microcracks hauv panels, txo cov zis. Qee qhov kev daws teeb meem racking tau ua kom zoo rau thaj chaw siab cua, tiv thaiv cov vaj huam sib luag los ntawm kev txhawb nqa muaj zog thiab txwv microcracking. Feem ntau, cov chaw tsim khoom cov ntaub ntawv yuav muab cov ntaub ntawv ntawm max cua lub vaj huam sib luag tuaj yeem tiv taus.
Ib yam mus rau cov daus, uas tuaj yeem npog cov vaj huam sib luag thaum muaj cua daj cua dub hnyav, txwv cov khoom tawm. Daus kuj tuaj yeem ua rau lub cev tsis muaj zog, ua rau cov panels degrading. Feem ntau, cov daus yuav swb tawm ntawm cov vaj huam sib luag, vim lawv slick thiab khiav sov, tab sis qee zaum tus tswv tsev yuav txiav txim siab tshem cov daus tawm ntawm cov vaj huam sib luag. Qhov no yuav tsum tau ua kom zoo zoo, vim tias khawb lub iav ntawm lub vaj huam sib luag yuav ua rau muaj kev cuam tshuam tsis zoo rau cov zis.
(Nyeem: “Cov lus qhia ua kom koj lub hnub ci ntsa iab ntawm lub ru tsev humming nyob rau lub sijhawm ntev“)
Degradation yog ib qho qub, yam tsis muaj kev zam ntawm lub vaj huam sib luag lub neej. Kev txhim kho kom zoo, ceev faj kom tshem tawm cov daus, thiab ua tib zoo tu vaj huam sib luag tuaj yeem pab cov zis, tab sis thaum kawg, lub hnub ci vaj huam sib luag yog ib qho cuab yeej uas tsis muaj qhov txav mus los, yuav tsum tau saib xyuas me ntsis.
Cov qauv
Txhawm rau kom ntseeg tau tias lub vaj huam sib luag muab tau zoo yuav ua neej nyob ntev thiab ua haujlwm raws li tau npaj tseg, nws yuav tsum tau ua raws li cov qauv kev sim rau kev lees paub. Cov vaj huam sib luag yog raug rau International Electrotechnical Commission (IEC) kev sim, uas siv rau ob qho tib si mono- thiab polycrystalline panels.
EnergySage tau haisCov vaj huam sib luag uas ua tiav IEC 61215 tus qauv raug kuaj rau cov yam ntxwv hluav taws xob zoo li cov dej ntws ntub dej, thiab cov rwb thaiv tsev tiv thaiv. Lawv nyob rau hauv ib qho kev kuaj xyuas txhua yam rau cua thiab daus, thiab kev ntsuas huab cua uas kuaj xyuas qhov tsis muaj zog rau qhov chaw kub, UV raug, av noo-freeze, ntub dej kub, huab cua cuam tshuam, thiab lwm yam sab nraum zoov raug.
IEC 61215 kuj txiav txim siab lub vaj huam sib luag kev ntsuas kev ua tau zoo ntawm cov qauv ntsuas ntsuas, suav nrog qhov ntsuas kub, qhov hluav taws xob qhib hluav taws xob, thiab qhov tso zis ntau tshaj plaws.
Tsis tas li ntawd feem ntau pom ntawm daim ntawv qhia vaj huam sib luag yog foob ntawm Underwriters Laboratories (UL), uas kuj muab cov qauv thiab kev sim. UL khiav cov kev ntsuas climactic thiab aging, nrog rau tag nrho cov gamut ntawm kev ntsuam xyuas kev nyab xeeb.
Ua tsis tiav
Lub hnub ci vaj huam sib luag tsis ua haujlwm tshwm sim ntawm tus nqi qis. NRELua kev kawmntawm ntau tshaj 50,000 lub tshuab tau teeb tsa hauv Tebchaws Meskas thiab 4,500 thoob ntiaj teb nruab nrab ntawm xyoo 2000 thiab 2015. Txoj kev tshawb nrhiav pom qhov nruab nrab tsis ua haujlwm ntawm 5 panels tawm ntawm 10,000 txhua xyoo.
Vaj huam sib luag tsis ua hauj lwm tau txhim kho tau zoo dua nyob rau lub sijhawm, raws li nws tau pom tias cov tshuab nruab nrab ntawm 1980 thiab 2000 tau pom qhov ua tsis tiav ntawm ob pawg tom qab xyoo 2000.
(Nyeem: “Sab saum toj hnub ci vaj huam sib luag hom nyob rau hauv kev ua tau zoo, kev ntseeg tau thiab zoo“)
Lub kaw lus downtime tsis tshua muaj vim yog vaj huam sib luag tsis ua haujlwm. Qhov tseeb, kev tshawb fawb los ntawm kWh Analytics pom tias 80% ntawm tag nrho cov hnub ci cog hnub poob yog tshwm sim los ntawm kev ua tsis tiav inverters, cov cuab yeej uas hloov lub vaj huam sib luag DC tam sim no mus rau AC siv tau. pv magazine yuav txheeb xyuas qhov kev ua tau zoo ntawm inverter hauv kev txuas ntxiv ntawm cov koob no.
Post lub sij hawm: Jun-19-2024