UPS-详解

UninterruptiblePowerSupplyApplicationintheDCSofXXXXPlantLiuChenlongWhywechoosetheUPS?1SpeciesofUPS2CompositionofplantDCS3Summary5Precaution46Content“SuchalongdistanceFromthepowerplanttotheenduserInfluence:•Plantshutdown•Highvoltagepowergrid•Lightning•Transformerswitch•PowerdistributioncabinetswitchWhywechooseUPS?AdvantagesUPSSystemshutdownDatamissingordamagedhardwaredamagePowersupplywithoutinterruptionDatasecurityhardwareprotectedCityPowerCityPowerWhywechooseUPS?•PlantusingDCStooperatemeter,displayandcontrol•DCSthecentralnervoussystem”•stability,reliabilityandmustensurethatstopproductionsafelywhentheaccidentoccoured.•Therefore,weneedtoadopttheuninterruptedpowersupply(UPS)forpowersupply.WhywechooseUPS?UPSBackupOnlineBackupinteractiveSpeciesofUPS+-DCACAC/DCCitypowerSurgevoltageabsorberChargerChargingFilterSwitchLoadSpeciesofUPS-backup•powerrange:100~1000VA•Advantages:simplestructure,smallvolume,lightweight,easytocontrol,lowcost.•Weakness:conversiontime:4~16ms;Theoutputprecisionislow,theoutputwaveformispoor;Whenthemainsisnormal,noiseandsurgesuppressionabilityispoor.•Mainapplication:power-offprotectionofasinglecomputersystem.SpeciesofUPS-backup+-DCACACDCLoadCityPowerFilterSurgevoltageabsorberSwitchRectifierInverterSpeciesofUPS-Online•Powerrange:0.7~1500KV•advantages:•1)highestoutputpowerquality;•2)notransitiontime;•3)thebestprotectionperformance,theelectricnoiseandsurgesuppressionabilityarethestrongest.•disadvantages:complexstructure,highercost.•Themainapplicationobject:computerandnetworksystem,precisioninstruments,industrialsystempower-offprotection.SpeciesofUPS-Online+-DCACloadSurgevoltageabsorberCitypowerVoltageregulatorFilterBidirectionalconverterChargerChargerischargingSpeciesofUPS-Onlineinteractive•powerrange:0.7~20KV•advantages:highefficiency,lowcost,lessparts,afilteringcharacteristics,theoutputvoltageisbetter.•disadvantages:•1)withabi-directionalconverterdesign,UPSbatteryrechargetimeisshorter;•2)conversiontime4~10ms;•3)thecontrolstructureiscomplex,highcost;•4)protectionperformancebetweenon-lineandoff-lineUPS,themainsnoiseandsurgesuppressionabilityispoor.•Mainapplicationobject:smallandmedium-sizedinstrumentsandmeters,singleormultiplecomputersandpowerprotectionofrelatedsystem.SpeciesofUPS-Onlineinteractivepower(kVA)voltagecostefficiencyinverterisalwaysrunning?backup0-1lowlowveryhighnoonlineinteractive0.5-6basedondesignmediumveryhighnoonline1-1500highlowyeshightechnologytranslatetime4～16ms4~10ms0backuponlineinteractiveonlineparametertechnologyoutputwavegreatinfluencebyinputgreatinfluencebyinputgreatstabilityofoutput±10%±10%±1%~±3%parameterSpeciesofUPS•apllicationobjectparametertechnologybackuponlineinteractiveonlinepower-offprotectionofasinglecomputersystem1computerandnetworksystem,precisioninstruments,industrialsystempower-offprotection.1smallandmedium-sizedinstrumentsandmeters,singleormultiplecomputersandpowerprotectionofrelatedsystem.SpeciesofUPSCompositionofplantDCSman-machineinterfaceestablishcontactexchangeinformationinterfaceofinputandoutputequipment,operatorstationandengineerstation,eachstationincludingkeyboard,monitor,printer,mouse.fieldcontrolstationcontrolprocessingunit,analog,switchinputandoutputunit,specialprocessingunitscommunicationnetworkopticalfiber,switches,communicationmodule,opticaltransceiverfieldinstrumentvalvesystemthermocouple,heatresistance,levelgauge,flowmeter,pressuresensor,unconventionalinstrumentssuchasnuclearinstrument.EachpartofDCScannotseparatefrompowersupply.BasedonthatwechooseonlineUPS,itscapacityis10kV,withabatteryof20sections,eachsectionof12V,whichareconnectedinseriesvoltageof240VDC.batteryandhostsformanon-line,positivewaveformuninterruptiblepowersystem,withrepairswitchCompositionofplantDCSPrecautions•1)strictlycomplywiththerequirementsofthemanufacturerintheproductmanual.•2)ForthatnotneedUPSequipmentcanbedirectlyconnectedtothemains;•3)DonotuseUPSexcessload;•4)Don'tfrequentshutdownandenabletheUPS.Summary•XxxxDCSuninterruptiblepowersupplyusedincontrolsystemcanguaranteethestableoperationofthewholecontrolsystem.