Bl-aġġustament tal-istruttura tal-enerġija u t-tmexxija kontinwa tal-għan strateġiku newtrali tal-karbonju tal-ogħla karbonju, l-investiment fil-kostruzzjoni tas-suq fotovoltajku distribwit sar aktar u aktar popolari ma 'ħafna investituri. L-installazzjoni tal-fotovoltajċi mhix biss kontribuzzjoni għall-protezzjoni ambjentali u t-trasformazzjoni tal-istruttura tal-enerġija, iżda wkoll A investiment stabbli, għalhekk ir-rata ta 'ritorn tal-impjanti tal-enerġija fotovoltajka hija relatata mill-qrib mal-ammont ta' elettriku ġġenerat.
Xi ħbieb li jinstallaw power stations fotovoltajċi kultant jiltaqgħu li l-qawwa operattiva ġenerali tal-power station hija baxxa meta l-power station tkun qed taħdem, li tirriżulta fil-ġenerazzjoni tal-enerġija ma tilħaqx il-valur raġonevoli tas-sistema fotovoltajka tal-istess kapaċità fiż-żona.
Raġunijiet u Soluzzjonijiet għall-Ġenerazzjoni ta 'Enerġija Anormali ta' Stazzjonijiet tal-Enerġija Fotovoltajċi
01
problema tal-komponent
Il--moduli fotovoltajċi fuq il-post huma mblukkati, jakkumulaw trab jew mhumiex kwalifikati, u dan jirriżulta f'ġenerazzjoni ta' enerġija baxxa tal-power station. Per eżempju, hemm arbli ta 'utilità, ħitan, eċċ madwar l-istazzjon tal-enerġija, il-moduli ma jitnaddfux regolarment, u l-wiċċ huwa mniġġes serjament.
Soluzzjoni: Huwa rakkomandat li tittratta l-ostruzzjonijiet madwar l-istazzjon tal-enerġija fotovoltajka fil-ħin. Jekk hija problema ta 'installazzjoni u disinn, tista' tiġi aġġustata skont il-kundizzjonijiet tas-sit, u l-pannelli fotovoltajċi għandhom jitnaddfu regolarment b'oġġetti tal-qoton bħal moppijiet wara t-tixrib fl-ilma, u l-moduli fotovoltajċi difettużi għandhom jiġu sostitwiti jew imneħħija fil-ħin .
02
Problemi ta 'disinn u installazzjoni
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.
Soluzzjoni: Iċċekkja l-vultaġġ tas-sekwenza konnessa mal-inverter, u qabbad il-moduli PV tal-istess mudell, orjentazzjoni, angolu u kwantità mal-istess MPPT tal-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.
Soluzzjoni: Għal komponenti ta'-kurrent għoli, jista' jintuża string inverter kompatibbli ma' input ta'-kurrent għoli, jew meta l-kurrent jippermetti, jistgħu jintużaw konfigurazzjoni u installazzjoni raġonevoli biex jitnaqqas in-numru ta' kordi konnessi ma' kull 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.
Soluzzjoni: L-inverter għandu jiġi installat f'żona-iventilata tajjeb, u l-kanal tal-arja li jkessaħ tal-inverter għandu jiġi evitat milli jiġi mblukkat. Huwa rakkomandat li titqiegħed viżiera tax-xemx fuq l-inverter biex tevita dawl tax-xemx dirett, li jgħin biex titnaqqas it-temperatura tal-ambjent tax-xogħol tiegħu.
03
problema ta 'tħaddim tas-sistema
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.
Soluzzjoni: Jekk l-inverter ikun f'operazzjoni ta'-frekwenza u tagħbija-iżżejjed, skont il--kundizzjonijiet tax-xogħol fuq il-post u r-rekwiżiti tal-provvista tal-enerġija lokali, tista' tikkonsulta inġinier biex taġġusta dan jiffunzjona fuq-sit jew mill-bogħod.
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.
Soluzzjoni: Biex l-inverter jixgħel il-vultaġġ kostanti bi żball, jista 'jiġi kkanċellat permezz tal-proċess tal-issettjar li ġej
Setting process: advanced setting→special function setting→constant voltage mode setting→stop