Въведение
Thebatterypackisanindependentandreliableoperatingpowersource.ItisnotaffectedbytheACpowersource.Itcanstillensurecontinuousandreliableoperationeveninthecaseofapoweroutageandabusbarshort-circuitinthewholeplant..
Thebatteryvoltageisstableandthecapacityislarge.Itisnotonlysuitableforvariousmorecomplicatedrelayprotectionandautomaticdevices,butalsosuitableforthetransmissionofvariouscircuitbreakers.Therefore,large-scaleenterprisesubstationsusuallyusebatterypacksItisusedastheoperatingpowersupply,buttheoperatingpowersupplyofthebatterypackrequiresmanyauxiliaryequipmentandspecialrooms.Theinvestmentislarge,thelifeisshort,theconstructiontimeislong,theoperationiscomplicated,andthemaintenanceworkloadislarge.Therefore,thebatterypackisgenerallynotusedastheoperatingpowersupplyinsmallandmedium-sizedsubstations.,AndmostlyuserectifiedDCoperationpowersupplyorACoperationpowersupply.
Как работи комплектът батерии
Batterypackshavecharging,dischargingandfloatingchargingmodes,andthefloatingchargingmodeisusuallyadopted.Becausethefloatingchargecurrentnotonlycompensatesfortheself-dischargelossofthebatterypack,butalsocancarryapartoftheDCload,sothatthebatterypackisalwaysinafullychargedstate,andonlyatthemomentofclosingcanthebatterypackprovidealargecurrent.Thisworkingmethoddoesnotrequirefrequentcharginganddischarging,prolongstheservicelifeofthebattery,andreducestheworkloadofoperationandmaintenance,soitiswidelyused.
Инсталирането на пакета батерии
Theinstallationpositionofthebatteryofthesmallphotovoltaicpowergenerationsystemshouldbeascloseaspossibletothesolarcellandthecontroller;TheinvertersandACpowerdistributioncabinetsaredividedintoseparaterooms.Theinstallationlocationshouldensuregoodventilation,convenientdrainage,andpreventhightemperature.Theambienttemperatureshouldbekeptbetween10~25℃asfaraspossible.
Insulationmeasuresshouldbetakenbetweenthebatteryandtheground,andwoodenboardsorotherinsulatorsshouldbeusedtopreventthebatteryfromshort-circuitingthegroundanddischarging.Iftherearealargenumberofbatteries,theycanbeinstalledonadedicatedbatterysupport,andthesupportmustbegroundedreliably.
Afterthebatteryisinstalled,thetotalvoltageofthebatteryandthevoltageofasinglebatteryshouldbemeasured,andthevoltageofthesinglebatteryshouldbeequal.Whenwiring,distinguishthepositiveandnegativepolestoensurethequalityofthewiring.
Thebatterypoleandthewiringmustbeinclosecontact,andalayerofpetroleumjellyoilfilmshouldbeappliedtothepoleandtheconnectionpointtopreventcorrosionandrustfromcausingpoorcontact.
Ролята на пакета батерии
Ролята на пакета батерииistostoretheelectricalenergygeneratedbythesolarcellarraywhenexposedtolightandtosupplypowertotheloadatanytime.Thebasicrequirementsofthesolarcellpowergenerationsystemforthebatterypackusedare:
①Слабо саморазреждане;
②Longservicelife;
③Силна способност за дълбоко разреждане;
④Висока ефективност на зареждане;
⑤Ниска поддръжка или липса на поддръжка;
⑥Широк диапазон на работна температура;
⑦Ниска цена.
Currently,thebatteriesusedinmycountry'ssolarcellpowergenerationsystemaremainlylead-acidbatteriesandcadmium-nickelbatteries.Forlead-acidbatteriesabove200Ah,fixedorindustrialsealedmaintenance-freelead-acidbatteriesaregenerallyused;forlead-acidbatteriesbelow200Ah,small-sizedsealedmaintenance-freelead-acidbatteriesaregenerallyused.