Johdanto
Thebatterypackisanindependentandreliableoperatingpowersource.ItisnotaffectedbytheACpowersource.Itcanstillensurecontinuousandreliableoperationeveninthecaseofapoweroutageandabusbarshort-circuitinthewholeplant..
Thebatteryvoltageisstableandthecapacityislarge.Itisnotonlysuitableforvariousmorecomplicatedrelayprotectionandautomaticdevices,butalsosuitableforthetransmissionofvariouscircuitbreakers.Therefore,large-scaleenterprisesubstationsusuallyusebatterypacksItisusedastheoperatingpowersupply,buttheoperatingpowersupplyofthebatterypackrequiresmanyauxiliaryequipmentandspecialrooms.Theinvestmentislarge,thelifeisshort,theconstructiontimeislong,theoperationiscomplicated,andthemaintenanceworkloadislarge.Therefore,thebatterypackisgenerallynotusedastheoperatingpowersupplyinsmallandmedium-sizedsubstations.,AndmostlyuserectifiedDCoperationpowersupplyorACoperationpowersupply.
Kuinka akku toimii
Batterypackshavecharging,dischargingandfloatingchargingmodes,andthefloatingchargingmodeisusuallyadopted.Becausethefloatingchargecurrentnotonlycompensatesfortheself-dischargelossofthebatterypack,butalsocancarryapartoftheDCload,sothatthebatterypackisalwaysinafullychargedstate,andonlyatthemomentofclosingcanthebatterypackprovidealargecurrent.Thisworkingmethoddoesnotrequirefrequentcharginganddischarging,prolongstheservicelifeofthebattery,andreducestheworkloadofoperationandmaintenance,soitiswidelyused.
Akun asennus
Theinstallationpositionofthebatteryofthesmallphotovoltaicpowergenerationsystemshouldbeascloseaspossibletothesolarcellandthecontroller;TheinvertersandACpowerdistributioncabinetsaredividedintoseparaterooms.Theinstallationlocationshouldensuregoodventilation,convenientdrainage,andpreventhightemperature.Theambienttemperatureshouldbekeptbetween10~25℃asfaraspossible.
Insulationmeasuresshouldbetakenbetweenthebatteryandtheground,andwoodenboardsorotherinsulatorsshouldbeusedtopreventthebatteryfromshort-circuitingthegroundanddischarging.Iftherearealargenumberofbatteries,theycanbeinstalledonadedicatedbatterysupport,andthesupportmustbegroundedreliably.
Afterthebatteryisinstalled,thetotalvoltageofthebatteryandthevoltageofasinglebatteryshouldbemeasured,andthevoltageofthesinglebatteryshouldbeequal.Whenwiring,distinguishthepositiveandnegativepolestoensurethequalityofthewiring.
Thebatterypoleandthewiringmustbeinclosecontact,andalayerofpetroleumjellyoilfilmshouldbeappliedtothepoleandtheconnectionpointtopreventcorrosionandrustfromcausingpoorcontact.
Akun rooli
Akun rooliistostoretheelectricalenergygeneratedbythesolarcellarraywhenexposedtolightandtosupplypowertotheloadatanytime.Thebasicrequirementsofthesolarcellpowergenerationsystemforthebatterypackusedare:
① Alhainen itsepurkaus;
②Pitkä käyttöikä;
③ Vahva syväpurkauskyky;
④ Korkea lataustehokkuus;
⑤Alhainen huolto tai eihuolto;
⑥Laaja käyttölämpötila-alue;
⑦Alhainen hinta.
Currently,thebatteriesusedinmycountry'ssolarcellpowergenerationsystemaremainlylead-acidbatteriesandcadmium-nickelbatteries.Forlead-acidbatteriesabove200Ah,fixedorindustrialsealedmaintenance-freelead-acidbatteriesaregenerallyused;forlead-acidbatteriesbelow200Ah,small-sizedsealedmaintenance-freelead-acidbatteriesaregenerallyused.