与燃煤电站耦合的压缩空气储能系统性能分析-豆柴文库

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与燃煤电站耦合的压缩空气储能系统性能分析
Title:PerformanceAnalysisofCompressedAirEnergyStorageSystemsCoupledwithCoal-firedPowerPlants
Introduction:
Withtheincreasingdemandforenergystoragesolutionstobalancetheintermittentnatureofrenewableenergysources,compressedairenergystorage(CAES)hasgainedsignificantattention.Thispaperaimstoanalyzetheperformanceofacompressedairenergystoragesystemintegratedwithacoal-firedpowerplant.ThecouplingofCAESwithconventionalpowerplantscanenhancetheiroperationalflexibility,reducecarbonemissions,andprovidegridstability.
1.SystemConfigurationandWorkingPrinciple:
Theintegrationofacompressedairenergystoragesystemwithacoal-firedpowerplantinvolvestheutilizationofexcesselectricityduringoff-peakhourstocompressandstoreairinundergroundreservoirs.Duringthepeakloadorhigh-demandperiods,thestoredcompressedairisreleasedtorunturbinesandgenerateelectricity.Thiscouplingallowsfortheefficientutilizationofexcessenergyandprovidesareliablesourceofelectricityduringpeakdemand.
2.PerformanceParameters:
ToanalyzetheperformanceofthecoupledCAESsystem,severalkeyperformanceparametersneedtobeconsidered:
2.1EnergyEfficiency:
Oneofthemainobjectivesofanyenergystoragesystemistomaximizeenergyefficiency.TheoverallefficiencyoftheCAESsystemcanbeevaluatedbyconsideringtheenergylossesduringcompression,storage,anddischargeprocesses.Additionally,theround-tripefficiency,whichrepresentstheratiooftheoutputenergytotheinputenergyduringacompletecycle,shouldbecalculated.
2.2GridStability:
TheintegrationofCAESwithcoal-firedpowerplantscanenhancegridstabilitybyprovidingquick-responsecapacityandregulatingpoweroutput.Thesystem'sabilitytorespondrapidlytochangesingriddemandandmaintainstabilityduringfluctuationsinrenewableenergygenerationshouldbeanalyzed.
2.3EnvironmentalImpact:
AstheCO2emissionsfromconventionalpowerplantscontributetoclimatechange,itiscrucialtoevaluatetheenvironmentalimpactofthecoupledsystem.ThereductioninCO2emissionsachievedbyutilizingexcessrenewableenergyandtheoverallcarbonfootprintofthesystemshouldbea