Nrog rau kev hloov kho ntawm lub zog qauv thiab kev coj noj coj ua tsis tu ncua ntawm cov pa roj carbon monoxide lub hom phiaj ntawm cov pa roj carbon ntau, kev nqis peev hauv kev tsim kho ntawm kev lag luam photovoltaic tau ua ntau dua thiab nrov nrog ntau tus neeg ua lag luam. Kev teeb tsa ntawm photovoltaics tsis yog tsuas yog pab txhawb rau kev tiv thaiv ib puag ncig thiab kev hloov pauv ntawm lub zog, tab sis kuj yog ib qho kev nqis peev ruaj khov, yog li tus nqi rov qab los ntawm photovoltaic fais fab nroj tsuag yog ze ze rau cov nqi hluav taws xob tsim.
Qee cov phooj ywg uas nruab photovoltaic fais fab chaw nres tsheb qee zaum ntsib tias tag nrho cov kev khiav hauj lwm ntawm lub chaw nres tsheb fais fab yog tsawg thaum lub hwj chim chaw nres tsheb khiav, uas ua rau lub zog tsim hluav taws xob tsis ncav cuag tus nqi tsim nyog ntawm photovoltaic system ntawm tib lub peev xwm hauv cheeb tsam.
Yog vim li cas thiab kev daws teeb meem rau kev tsim hluav taws xob txawv txav ntawm Photovoltaic fais fab chaw nres tsheb
01
teeb meem tivthaiv
Ntawm -site photovoltaic modules raug thaiv, khaws cov plua plav lossis tsis tsim nyog, ua rau muaj hluav taws xob tsawg ntawm lub chaw nres tsheb fais fab. Piv txwv li, muaj cov ncej hluav taws xob, phab ntsa, thiab lwm yam nyob ib ncig ntawm lub chaw nres tsheb fais fab, cov khoom siv tsis tu ncua tsis tu ncua, thiab qhov chaw muaj kuab paug heev.
Kev daws: Nws raug pom zoo los daws cov teeb meem ntawm qhov chaw nres tsheb photovoltaic hauv lub sijhawm. Yog tias nws yog ib qho teeb meem ntawm kev teeb tsa thiab tsim, nws tuaj yeem hloov kho raws li qhov chaw nyob, thiab cov photovoltaic panels yuav tsum tau ntxuav tsis tu ncua nrog cov khoom siv paj rwb xws li mops tom qab soaking hauv dej, thiab cov khoom siv photovoltaic tsis zoo yuav tsum tau hloov lossis tshem tawm lub sijhawm. .
02
Teeb meem tsim thiab installation
①The number or models of photovoltaic modules connected to the same MPPT are inconsistent. Due to the "cask benefit", the MPPT of this line operates at the lowest photovoltaic string voltage, resulting in a decrease in power generation.
Kev daws: Txheeb xyuas qhov voltage ntawm txoj hlua txuas nrog lub inverter, thiab txuas cov PV modules ntawm tib lub qauv, kev taw qhia, lub kaum ntse ntse, thiab kom muaj nuj nqis rau tib MPPT ntawm lub inverter.
② The maximum current of the photovoltaic module is higher than the maximum DC input current of the inverter, which causes the current-limiting operation of the DC input side of the inverter, and the operating power is lower than the reasonable power of the photovoltaic system.
Kev daws: Rau siab - cov khoom tam sim no, ib txoj hlua inverter sib xws nrog siab - cov tswv yim tam sim no tuaj yeem siv tau, lossis thaum qhov tam sim no tso cai, tsim nyog thiab kev teeb tsa tuaj yeem siv los txo cov hlua txuas nrog txhua MPPT.
③ The temperature of the working environment of the inverter is too high or there is no ventilation. For example, if it is placed in a direct sunlight position, in a small closed and unventilated space, or if there are baffles in its cooling air duct, the operation of the inverter will be limited by the ambient temperature. Temperature drop load.
Kev daws: Lub inverter yuav tsum tau muab tso rau hauv qhov dej - qhov cua qhov chaw, thiab cov cua txias ntawm lub inverter yuav tsum tiv thaiv kom tsis txhob raug thaiv. Nws raug nquahu kom tso lub hnub ci visor saum lub inverter kom tsis txhob tshav ntuj ncaj qha, uas yuav pab txo qhov kub ntawm nws qhov chaw ua haujlwm.
03
teeb meem kev ua haujlwm
①System over-frequency derating: This function is for Class A inverters according to the requirements of 8.3.2.3 in the energy standard NB/T32004-2018. When the grid frequency exceeds 50.03Hz, the inverter will run with over-frequency derating.
Kev daws: Yog tias lub inverter nyob rau hauv dhau- zaus thiab thauj khoom- ua haujlwm ua haujlwm, raws li ntawm - qhov chaw ua haujlwm thiab cov khoom siv hluav taws xob hauv cheeb tsam, koj tuaj yeem sab laj tus kws tshaj lij los kho qhov no ua haujlwm ntawm -site lossis nyob deb.
② Reasons for system reactive power compensation: The power factor of the on{{0}}site power supply system is lower than 0.9, and the inverter needs to generate reactive power to compensate the power supply system for reactive power. When the power factor of the inverter is adjusted, its active power output decreases, and the inverter In the state of "reactive power reduction";
Solution: In view of the "reactive power load reduction" state of the inverter, it is recommended to check whether the reactive power compensation function in the power supply system is normal. If it is not normal, it is necessary to increase or improve the reactive power compensation equipment of the power supply system.
③Limited power grid absorbing capacity: If the power grid absorbing capacity in the area is limited or the line loss is too large, the grid will be over-voltage, especially when the power generation power is high at noon. loss.
Solution: For the on-site system due to grid consumption or overvoltage problems, it is necessary to use a multimeter to detect the on-site grid voltage to find out the cause of the on-site voltage is too high, whether there is a wire diameter that does not match or cannot be absorbed locally. At the same time, the "overvoltage load reduction" function of the inverter can also be activated to prevent the system from being disconnected from the grid and causing more waste of power generation.
④ The inverter is turned on by mistake in constant voltage mode, resulting in low operating power of the inverter.
Kev daws: Rau lub inverter tig rau qhov tsis tu ncua voltage los ntawm kev ua yuam kev, nws tuaj yeem raug tshem tawm los ntawm cov txheej txheem hauv qab no
Setting process: advanced setting→special function setting→constant voltage mode setting→stop