Embed Size (px)
Citation preview
Casestudy
Cordova,Alaska
EnergyStorageofRenewablePowerinIslandedMicrogrids
Heike Merkel, Data and Project Manager, Alaska Center for Energy and Power Dec 3th, 2016
LocationofMap
Cordova
HumpbackCreekHydroPlant
PowerCreekHydroPlant
CraterLake
OrcaPowerPlant
CECSubstation
OrcaPowerPlant:5Units:2x1125kW1x2450kW1x2500kW1x3800kWTOTAL:10.8MWProduced10GWh(2011)
PowerCreekHydroPlant
2x3MWturbinesTotal:6MW
Produced15.7GWh(2011)
Potential~21GWhSpilled~5.3GWh
HumpbackCreekHydroPlant3Units:2x500kWFrancis1x250kWTurgoTotal:1.25MWProduced1.6GWh(2011)Nospillage,plantrunsatfullcapacity
PowerCreekGenerationandLoads
AnimationbyMarcMueller-Stoffels(ACEP)
ObjectiveandApproach
• EnergyStorageanalysisandoptimizationmodelingto:– Recoverspilledpower– Reducediesel
consumption– ReducedieselO&M– Supportgridstability
• Deliverables– Technicalspecificationfor
RFPbyCEC– Projectblueprintfor
otherAKutilities
CordovaEnergyMixin2011• 18GWhHydropower• 10GWhDiesel• 781,000GalDiesel@$3.55/gal
• $2.77MFuelbill• Costofgeneration:
• Hydro:~$0.06/kWh• Diesel:~$0.35/kWh
• Estimate:~5.3GWhspilledhydro
Cansomeofthespilledhydroberecoveredtodisplacedieselfuel?
ESSPotentialin2011
Diminishingreturnsofreductionofdieselfuel.LowpowerESS(<1MW)oflimitedvalue.
Rangeincludedinthesimulation
TorecoverALLspilledhydropowerwould
requirea10MW/2.5GWh
battery!
Red
uctio
n in
die
sel c
onsu
mpt
ion
DieselchargingESS:YES DieselchargingESS:NO
ReductioninDieselConsumption
ReductioninDieselRunTime
DieselchargingESS:YES DieselchargingESS:NO
DieselCapacityFactor
DieselchargingESS:YES DieselchargingESS:NO
DieselSwitching
DieselchargingESS:YES DieselchargingESS:NO
ESSCycles/CycleAmplitude
DieselchargingESS:YES DieselchargingESS:NO
ESSasSRCSupport
DieselchargingESS:YES DieselchargingESS:NO
PreliminaryResultsandNextSteps
• Replacementof1GWhofdieselwithhydroresultsinapotentialsavingsindieselfuelof~$300k
• EstimatedieselO&Mcost• Mergeourdatawithdynamic
systemmodelbySandiaNationalLabtodeterminetheoptimalESSlocation
• DeveloptechnicalspecificationfortheESS
• CEC:IssueRFPwithoptiontoown/operateorbidirectionalPPA.
Thankyou!
ACEPProjectteam:Dr.MarcMueller-Stoffels(PI),Dr.HendrikSchaede,JeremyVandermeer,LuisMiranda,HeikeMerkel
http://acep.uaf.edu
