flinders island isolated power system (ips) connect 2016 h merkel acep

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