Tej teeb meem hluav taws xob hauv photovoltaic systems thiab yuav ua li cas nrog lawv

Teeb meem 1: Kub qhov chaw ntawm cov khoom

Qhov laj thawj tseem ceeb ntawm qhov kub kub yog: cov teeb meem zoo ntawm module (ntau sab hauv tsis kam), cov kab nrib pleb thiab cov duab ntxoov ntxoo ib nrab.

Cov chaw kub kub tuaj yeem ua rau muaj kev puas tsuaj loj rau PV modules lossis cov tshuab thiab tuaj yeem ua rau hluav taws kub nyhiab, tab sis lawv nyuaj rau kev kuaj pom los ntawm kev kuaj pom ib leeg, yog li nws yog qhov zoo tshaj plaws los siv lub koob yees duab infrared los kuaj xyuas lawv.

Teeb meem 2: Ua tsis tau raws li qhov xav tau ntawm kev tsim hluav taws xob

Hnub ci kev pab cuam yog ntsuas nyob rau hauv cov nqe lus ntawm lub hnub ci hnub ci teev, piv txwv li cov teev nyob rau hauv ib hnub twg thaum 1,000 watts ib square meter ntawm hnub ci module tso zis yuav ua tau tiav.

Tus naj npawb ntawm cov hnub ci siab tshaj plaws tuaj yeem cuam tshuam los ntawm ntau yam, tshwj xeeb yog lub sijhawm nruab hnub, lub caij thiab huab cua. Yog li ntawd, qhov chaw thiab lub kaum sab xis ntawm lub hnub ci module plays lub luag haujlwm tseem ceeb ntawm cov hluav taws xob tsim tawm.

Tom qab txhim kho qhov system, qhov ntsuas hluav taws xob thiab qhov hluav taws xob tiag tiag ntawm cov khoom raug ntsuas los xyuas kom meej tias lawv ua haujlwm raws li tsim. Lub IV nkhaus ntawm lub hwj chim tso zis yog xam los ntawm kev sib txuas ntawm lub hnub ci irradiance meter thiab multifunctional tester.

Txawm hais tias tau teeb tsa kom raug, PV system yuav tsis ua tiav qhov kev xav tau ntawm lub zog hluav taws xob. Txhawm rau kom PV system ua tiav cov txiaj ntsig xav tau, nws yog ib qho tseem ceeb kom ntseeg tau tias lub kaw lus muaj peev xwm tau txais qhov tseeb ntawm irradiated zog. Nws yog ib qho tsim nyog los ntsuas qhov irradiance ntawm qhov tam sim no module txoj hauj lwm siv lub hnub ci irradiance meter thiab rov kho lub kaum sab xis kom txog rau thaum txoj hauj lwm nrog lub siab tshaj plaws irradiance pom.

Qhov Teeb Meem 3: Cov teeb meem hluav taws xob hauv PV systems

Cov teeb meem ntawm PV feem ntau yog feem ntau cuam tshuam nrog cov vaj huam sib luag, kev thauj khoom, av thiab inverters.

- PV vaj huam sib luag faults.

Ua ntej kuaj xyuas, cov input voltage thiab tam sim no theem ntawm inverter yuav tsum tau kaw thiab cov teeb meem hauv qab no yuav raug ntsib.

Tag nrho PV system kaw / tsis tsim hluav taws xob - tej zaum muaj teeb meem nrog lub inverter;

PV system tso zis qis dua li qhov xav tau - tej zaum yuav yog qhov teeb meem module lossis module.

Nws raug nquahu kom pib raws txoj kab ntawm lub dab dej tam sim no, siv lub ntsuas ntsuas tam sim no yuav ua kom zoo dua qhov kev tshawb nrhiav.

Hom kev ua txhaum uas tuaj yeem tshwm sim yog

-Dirt, teeb meem thaiv thiab xoob kev sib txuas (tshwj xeeb tshaj yog kev sib txuas ntawm cov txiv ntseej ntawm cov khoom);

- Duab ntxoov ntxoo los yog plua plav ntawm lub module (uas tuaj yeem ua rau txo cov zis)

- Photovoltaic load faults.

1. Txheeb xyuas tias qhov tseeb qhov hluav taws xob tam sim no nyob rau ntawm qhov sib txuas. Yog tias qhov hluav taws xob qis dhau lawm, nws yuav tsum tau txo qis hauv Circuit Court load lossis siv cov hlau loj dua.

2. Xyuas lub fuse thiab Circuit Court breaker thiab hloov lub faulty fuse/breaker yog tias muaj teeb meem.

3. Yog hais tias lub load yog ib tug hluav taws xob lub cev muaj zog, lub internal thermal circuit breaker tej zaum yuav tripped los yog winding nyob rau hauv lub cev muaj zog yuav qhib. Lwm qhov kev thauj khoom yuav tsum tau hloov pauv thiab tom qab ntawd kuaj xyuas kev ua haujlwm kom raug.

- PV av faults.

DC av faults yog ib hom kev txhaum hauv PV systems thiab feem ntau yog tshwm sim los ntawm kev tsis zoo tam sim no los ntawm cov khoom siv hauv av vim yog cov khoom siv hluav taws xob puas hauv av, kev teeb tsa tsis raug, pinched conductors thiab dej ingress.

DC lub ntiaj teb faults yog tshwj xeeb tshaj yog txaus ntshai nyob rau hauv loj PV systems raws li lawv tsis yooj yim nrhiav tau thiab yog heev txaus ntshai. Cov cuab yeej tiv thaiv hauv av tsis raug (GFP) tsis tuaj yeem ntes cov xau me me tam sim no (< 1a)="" in="" ground="" faults,="" so="" this="" is="" known="" as="" a="" "blind="" spot".="" in="" the="" event="" of="" a="" fault,="" not="" only="" does="" this="" cause="" a="" safety="" problem,="" but="" it="" also="" creates="" a="" fire="">

Yog tias tsis muaj lub ntiaj teb ua txhaum, qhov ntsuas hluav taws xob ntsuas los ntawm ib qho ntawm cov khoom siv hluav taws xob yuav tsum yog 0V.

Yog hais tias muaj lub ntiaj teb voltage ntawm ib qho ntawm cov conductors, xyuas txhua qhov txuas (DC disconnect, busbar) tag nrho txoj kev rov qab mus rau cov khoom. Hloov cov conductors sai li sai tau thaum pom qhov ua txhaum thiab khaws cov ntaub ntawv ntawm kev sim thiab hloov.

- PV inverter faults.

Yog hais tias lub inverter tsis ua qhov tseeb tso zis, qhov tso zis voltage tam sim no thiab lub zog ntawm lub inverter yuav tsum tau soj ntsuam nrog ib tug clamp meter ntawm AC ntsuas thiab muab piv nrog rau cov nqi sau tseg nyob rau hauv lub xeem check. Raws li kev thauj khoom ntawm lub inverter yuav xav tau ntau dhau tam sim no, lub load tuaj yeem raug txo los yog lub converter loj tuaj yeem ntsia tau.

Tsis tas li ntawd, txhua qhov teeb meem hluav taws xob nrog lub tuam txhab fais fab yuav ua rau lub inverter kaw.