Vim li cas kev tiv thaiv hluav taws xob tseem ceeb hauv cov tshuab hluav taws xob hnub ci PV?

Thaum cov engineers sib tham txog qhov teeb meem no yuav ua li cas tsim lub hnub ci PV system cov qauv vaj tsev, feem ntau tsom mus rau qhov loj ntawm lub hnub ci PV system, kev xaiv inverter, thiab kev teeb tsa roj teeb. Txawm li cas los xij, ib qho tseem ceeb uas cuam tshuam ncaj qha rau kev ntseeg tau ntawm lub kaw lus yog kev tiv thaiv hluav taws xob ntau dhau.

Cov teeb meem hluav taws xob thiab cov hluav taws xob hloov pauv ntau dhau uas ua rau lub inverter tsis ua haujlwm, MPPT puas tsuaj, thiab kev tswj hwm lub cev tsis ua haujlwm zoo. Yog tsis muaj kev tiv thaiv hluav taws xob ntawm lub cev PV uas tsim tau zoo, txawm tias lub cev PV hnub ci uas tsim tau zoo kuj tuaj yeem raug teeb meem tsis ua haujlwm thiab kho kim heev.

Nyob rau hauv niaj hnub no tsim lub hnub ci PV system, kev tiv thaiv hluav taws xob tsis yog xaiv tau - nws yog ib feem tseem ceeb ntawm kev nyab xeeb hluav taws xob thiab kev ua haujlwm mus sij hawm ntev.

Cov SPDs ntawm Lub Hnub Ci PV Tiv Thaiv Li Cas Los Ntawm Kev Siv Hluav Taws Xob Ntau Dhau Ib Ntus?

Ib qho xaiv tau zoo hnub ci PV SPD (lub cuab yeej tiv thaiv hluav taws xob ntawm lub hnub) txwv tsis pub muaj hluav taws xob ntau dhau los ntawm kev hloov lub zog hluav taws xob mus rau hauv av kom muaj kev nyab xeeb ua ntej nws mus txog cov khoom rhiab heev.

Cov Qhov Chaw ntawm Overvoltage hauv Solar PV Systems

1. Xob laim ncaj qha los yog nyob ze

2. Kev nce siab ntawm cov xov hluav taws xob DC ntev

3. Kev hloov pauv ntawm cov surges los ntawm kev cuam tshuam ntawm grid

4. Kev hloov pauv sab hauv ntawm cov inverters thiab cov khoom loj

Ob leeg grid tied hnub ci PV system thiab tawm ntawm lub hnub ci PV system Cov kev teeb tsa muaj kev phom sij rau cov kev cuam tshuam no. Cov qauv vaj tsev hnub ci PV sib xyaw ntsib kev cuam tshuam ntau dua vim yog kev sib cuam tshuam ntawm roj teeb thiab grid.

Kev Tiv Thaiv Mechanism hauv DC thiab AC Circuits

Cov tshuab hluav taws xob hnub ci PV muaj ob ntu DC thiab AC:

• DC sab: Nruab nrab ntawm cov vaj huam sib luag hnub ci thiab inverter

• AC sab: Nruab nrab ntawm lub inverter thiab lub rooj tsavxwm faib khoom

Nyob rau sab DC, cov hlua hluav taws xob siab - tshwj xeeb tshaj yog nyob rau hauv cov khoom lag luam loj - xav tau kev tiv thaiv tshwj xeeb xws li qhov ntsuas kom raug lub zog tiv thaiv hnub ci tsim los rau cov voj voog PV input. Hauv cov ntawv thov high-voltage, DC SPDs yuav tsum phim qhov voltage ntawm lub kaw lus thiab chav kawm rwb thaiv tsev.

Qib kev tshaj lij DC tiv thaiv hluav taws xob Cov kev daws teeb meem tau tsim tshwj xeeb rau cov chaw photovoltaic nrog cov hluav taws xob qhib siab thiab cov qib tam sim no hloov pauv.

Nyob rau sab AC, kev tiv thaiv hluav taws xob surge tau teeb tsa ntawm qhov tso zis inverter thiab lub vaj huam sib luag faib hluav taws xob tseem ceeb kom tiv thaiv kev cuam tshuam ntsig txog grid.

Yuav Tsum Tau Teeb Cov Khoom Siv Tiv Thaiv Hluav Taws Xob Los Ntawm Lub Hnub Ci Qhov Twg?

Qhov chaw teeb tsa kom raug yog qhov tseem ceeb hauv kev teeb tsa lub hnub ci PV system kev npaj.

1. Ntawm PV Array (DC Sab Kev Tiv Thaiv)

Rau cov kab ke uas muaj cov xov hlau ntev lossis cov ru tsev uas nthuav tawm:

• Nruab SPD ze ntawm lub thawv combiner

• Los yog koom ua ke SPD hauv inverter DC input seem

Qhov no tiv thaiv cov inverter's DC terminals los ntawm kev nce siab.

2. Ntawm qhov Inverter AC Output

Hauv ib qho grid tied hnub ci PV system, SPDs feem ntau raug teeb tsa:

• Ntawm cov inverter AC output terminals

• Ntawm lub rooj tsavxwm faib khoom AC loj

Qhov no ua kom muaj kev txwv tsis pub muaj kev nce siab tag nrho.

3. Ntawm Cov Tshuab Cia Khoom Siv Roj Teeb (Hybrid / Off-Grid)

Nyob rau hauv Lub hnub ci PV sib xyaw ua ke thiab tawm ntawm lub hnub ci PV system cov qauv tsim:

• Nruab SPDs rau ntawm lub tsheb npav DC roj teeb

• Tiv thaiv MPPT tus maub los tswj hwm tus nqi nkag / tso zis

• Xyuas kom tseeb tias kev sib txuas zoo rau lub kaw lus grounding

Cov txheej txheem roj teeb ua rau lub kaw lus rhiab heev vim tias cov khoom siv hluav taws xob ua haujlwm tas li thaum muaj kev thauj khoom.

Yuav ua li cas los koom ua ke Surge Protection rau hauv Solar PV System Design?

Yog koj ua qhov kev ntsuam xyuas yuav ua li cas tsim lub hnub ci PV system kom zoo, kev tiv thaiv hluav taws xob ntau dhau yuav tsum tau npaj thaum lub sijhawm tsim qauv thaum ntxov - tsis txhob ntxiv tom qab.

Kauj Ruam 1: Xav Txog Kev Tiv Thaiv Surge Thaum Lub Sijhawm Loj ntawm Lub Hnub Ci PV System

Thaum lub sijhawm lub hnub ci PV system sizing, cov engineers xam:

• Kev suav qhov loj ntawm lub vaj huam sib luag hnub ci

• Qhov loj ntawm lub inverter hnub ci

• Kev ntsuas qhov loj ntawm lub roj teeb rau lub hnub ci

Tib lub sijhawm, yuav tsum tau txhais cov theem voltage ntawm lub kaw lus. Kev xaiv SPD nyob ntawm ncaj qha rau:

• Qhov siab tshaj plaws qhib-circuit voltage (Voc)

• AC nominal voltage

• Hom kab ke av

Kev tsis quav ntsej qhov no ntawm theem ntsuas qhov loj feem ntau ua rau muaj qhov ntsuas SPD tsis sib xws.

Kauj Ruam 2: Koom Ua Ib Lub SPDs Rau Hauv Lub Hnub Ci PV Balance of System (BOS)

Cov khoom siv tiv thaiv kev co yog ib feem ntawm Lub hnub ci PV sib npaug ntawm lub kaw lus BOS, uas suav nrog:

• Cov thawv sib xyaw

• DC txiav tawm

• Cov khoom siv hluav taws xob AC

• MPPT tus tswj hwm tus nqi

• Cov txheej txheem saib xyuas

Cov SPDs yuav tsum tau sib koom tes nrog cov breakers thiab cov khoom siv disconnect kom ntseeg tau tias muaj kev ua haujlwm xaiv tau.

Cov kev daws teeb meem tiv thaiv hluav taws xob ntawm lub zog PV uas txhim khu kev qha yuav tsum sib xws nrog cov kev xav tau ntawm kev rwb thaiv tsev photovoltaic thiab cov xwm txheej ib puag ncig.

Koj tuaj yeem tshawb nrhiav cov thev naus laus zis tiv thaiv photovoltaic tshwj xeeb ntawm theem chaw tsim khoom los ntawm Leikexing kom nkag siab zoo dua txog cov tswv yim kev koom ua ke.

Rau cov lus qhia txog kev siv DC-sab, cov ntaub ntawv qhia txog kev siv tshuab muaj nyob rau hauv cov ntaub ntawv tshwj xeeb DC tiv thaiv hluav taws xob cov peev txheej.

Kauj Ruam 3: Kev Teeb Av thiab Kev Txhim Kho Kab Hlau

Kev tiv thaiv hluav taws xob zoo yuav tsum muaj:

• Kev sib txuas lus qis-impedance

• Cov xov hlau txuas SPD luv luv

• Kev sib txuas zoo ntawm lub thav duab PV thiab lub kaw lus av

• Kev zam ntawm cov xov hlau hauv lub hnub ci PV system layout

Kev tsim qauv tsis raug tuaj yeem txo qhov ua tau zoo ntawm SPD, txawm tias qhov ntsuas ntawm lub cuab yeej raug.

Xaus lus

Kev Nkag Siab yuav ua li cas tsim lub hnub ci PV system Kev tsim kho vaj tse mus dhau qhov kev xaiv module thiab lub peev xwm ntawm inverter. Ib lub kaw lus uas ruaj khov yuav tsum muaj kev tiv thaiv hluav taws xob ntawm lub kaw lus PV uas muaj cov qauv thoob plaws DC thiab AC circuits.

Los ntawm kev koom ua ke cov khoom siv tiv thaiv hluav taws xob hnub ci rau hauv cov khoom siv ntawm lub hnub ci PV txij thaum pib - thaum lub sijhawm teeb tsa qhov loj me thiab kev npaj qauv ntawm lub hnub ci PV - cov engineers tuaj yeem txhim kho qhov ruaj khov ntawm lub kaw lus, kev nyab xeeb, thiab kev ntseeg siab rau kev ua haujlwm mus sij hawm ntev.

Rau kev sab laj txog kev sib koom ua ke ntawm kev tiv thaiv hluav taws xob mus rau hauv cov qauv photovoltaic nyuaj, kev txhawb nqa kev tsim kho ncaj qha tuaj yeem thov los ntawm tus nom tswv nplooj ntawv tiv tauj.

Cov Lus Nug Feem Ntau (FAQ)

Vim li cas kev tiv thaiv hluav taws xob thiaj li tseem ceeb hauv kev tsim lub hnub ci PV system?

Kev tiv thaiv hluav taws xob ntau dhau tiv thaiv kev overvoltage ib ntus los ntawm kev puas tsuaj rau cov inverters, MPPT charge controllers, cov roj teeb systems, thiab cov khoom siv hluav taws xob saib xyuas, ua kom muaj kev ruaj khov ua haujlwm mus sij hawm ntev.

Puas yog txhua lub hnub ci PV system xav tau lub hnub ci PV SPD?

Yog. Ob qho tib si kev teeb tsa lub hnub ci PV uas txuas nrog grid thiab off-grid yuav tsum muaj cov SPDs uas raug ntsuas kom zoo rau ntawm DC thiab AC sab kom tiv thaiv tau xob laim thiab hluav taws xob ntau dhau.

Kuv yuav xaiv lub cuab yeej tiv thaiv hluav taws xob hnub ci kom raug li cas?

Kev xaiv nyob ntawm qhov hluav taws xob ntawm lub cev, hom inverter, kev teeb tsa av, thiab qhov hluav taws xob qhib siab tshaj plaws uas txiav txim siab thaum lub sijhawm ntsuas qhov loj ntawm lub cev PV.

Yuav tsum tau nruab SPDs qhov twg hauv lub tshuab hybrid solar PV?

Hauv cov kab ke sib xyaw, SPDs yuav tsum tau teeb tsa ntawm sab PV array DC, inverter AC output, thiab lub roj teeb cia DC bus kom ntseeg tau tias muaj kev tiv thaiv tag nrho.

Puas yog kev tiv thaiv hluav taws xob ntau dhau yog ib feem ntawm lub hnub ci PV qhov sib npaug ntawm lub kaw lus (BOS)?

Yog. Cov khoom siv tiv thaiv hluav taws xob ntau dhau raug cais ua ib feem ntawm lub hnub ci PV sib npaug ntawm lub kaw lus BOS, nrog rau kev txiav tawm, cabling, thiab cov khoom siv sib txuas.