Welcome to the Grid Edge - Energy Networks Australia
Transcript of Welcome to the Grid Edge - Energy Networks Australia
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Welcome to the
Grid Edge MicroGrids, Distributed
Energy Precincts and Grid Edge innovation
May 2017
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INTRODUCTION 1
CycloneResponseusingCommunitybasedMicroGrids 2
Networksrenewed 4
UnitedEnergy,VirtualPowerPlantPilotProject 6
CONSORTBrunyIslandBatteryTrial 7
OnslowDistributedEnergyResources(DER)Project 9
EndeavourEnergySolarSaverResidentialBatteryEnergyStorageTrial 10
MooroolbarkCommunityMiniGrid 12
Stand-AlonePowerSystem(SPS)Pilot 14
UnitedEnergy,DynamicVoltageManagementSystemTrial 16
CrottyDamRemoteAreaPowerSupply 17
EndeavourEnergyGridBatteryEnergyStorageSystem(BESS)trial 18
EsperanceStandalonePowerSystemProject 20
SummerSaverProgram 21
CO
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INTRODUCTION
Australia’s energy system is undergoing a transformation with customers at the centre.
Solar,batterystorageandotherdistributedenergyresourcesarebecomingmoreefficientandaffordable.Thesetechnologiesarebeinginstalledbybothcustomersandenergybusinessesacrossthecountrywhileotheredgeofgridtechnologiesarealsodevelopingrapidly.Thesetechnologiesallowcustomerstoparticipateintheenergysystemlikeneverbefore,makingthemostoftheirsolarandbatteries,sellingservicesbacktothegridandbeingrewardfortheirenergyusechoices.
CommunitiesareincreasinglyseekingtoformMicroGridsorminigrids.Thesesystemsmayattimesbeself-sufficientorexchangeserviceswiththegridformutualbenefitwiththewidercommunity.
InremotecommunitiesisolatedMicroGrids,remoteareapowersuppliesandstandalonepowersystemsoftenprovetobemorereliableandcosteffectivethantraditionalservicedelivery.Theyprovidetheopportunitynotonlyforsomecustomerstoenjoymorereliableelectricity,buttoreducecosts,byalleviatingtheneedforcostlyinvestmentinnetworkaugmentationwhilealsoreducingbushfirerisks.
Theseedgeofgridtechnologiescanalsosupportresilienceandallowpowertoberestoredtocommunitiesmoreefficientlyafternaturaldisasters.
Usedeffectively,edgeofgridapplicationscanensurereliabilityofthegrid,maintainpowerqualityandhelpavoidcostlynetworkaugmentations.
Energynetworkbusinessarecommittedtoworkingwithcustomerstodevelopandbuildtheenergysystemofthefuture.Theyareinstallingandtriallingthesenewtechnologiesandeachprojectallowsthenetworkbusinesstobetterunderstandpotentialapplicationsandtheneedsofthecommunity.
ThispublicationhighlightsjustafewexamplesofhownetworkbusinessesfromaroundAustraliaareworkingwithcustomersandcommunities.Amoreinnovative,agileapproachcanhelpprovideAustraliancustomerswithaffordable,secureandcleanerenergyinanincreasinglydecentralisedanddynamicenergysystem.
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Cyclone Response using Community based MicroGrids
In March 2017 Energy Queensland faced its first major challenge as a business when Tropical Cyclone Debbie wreaked havoc across more than half of Queensland’s east coast and there was significant damage caused to its Ergon and Energex distribution networks.
Atonepoint,almostaquarter-of-a-millionQueenslandcustomersacrossthemorethan1300sqkmswerewithoutpower.
ErgonEnergyandEnergex,aspartoftheEnergyQueenslandgroup,implementedarestorationplanthatwaseffective,inventiveandinnovative.
ErgonEnergyandEnergexteamsbeganaerialdamageassessmentswithin24hoursofTropicalCycloneDebbiecrossingthecoastintheWhitsundays.Within48hours,ElectricitySystemsDesignersandLinesPlannersweremappingoutMicroGridsolutionstorestorepoweruntilcommunitiescouldbeconnectedbygridsupply.
EnergyQueensland’stechnicalexpertiseandfieldexperienceenabledcrewstoresurrectabatteredandbrokennetworkandsupportitwithcommunity-basedMicroGridswhilelonger-termrepairsweremappedoutandundertakenintheworsthitareas.OneareawherethiswasparticularlysuccessfulwasthebeachsidecommunityofMidgePointwhichasaresultofinstallationofaPegasusunitandmicro-gridthecommunitywasabletostartrepairsandrecoverywellaheadoftheplannedgridsupplyrepairschedule.
ThefirststepwastorestoreGridsupplywherepossible.Wherethiswasn’tpossible,ErgonEnergydeployedandinstalledgenerationtosupportcriticalcommunityinfrastructureinlinewithLocalDisasterplanse.g.water/sewagepumps.
Thenextprioritywastorestorepowertothelargestnumberofcustomersasquicklyaspossible.Thisinvolvedrebuildingassetssuchaspowerlinesinlocalstreetsandrepairingdistributiontransformers,thenreconnectingindividualservicewirestohomesandbusinesses.
NETWORK BUSINESS
Ergon Energy
PROJECT LOCATION
North Queensland communities
between Mackay and Ayr
PROJECT PARTNERS & SUPPLIERS
ErgonEnergy,Energex,EssentialEnergy
(NSW)
PROJECT TIMING
March28–April142017
CONTACT
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Cyclone Response using Community based MicroGrids
ErgonEnergy’smobilegeneratorfleetisapproximately13.5MVAintotalcapacity.Thecurrentfleetincludes35lowvoltagegeneratorsranginginsizefrom33kVAto625kVA,withanadditionalsixcontainerisedlowvoltagemobile1250kVAunitsandfivePegasus1500kVAHVinjectionunits.TheseHVinjectionunitsarecapableofbeingdirectlyconnectedtoeithertheundergroundoroverhead11kVor22kVnetworks.
TheoperationalresponseincludedthedeploymentofPegasushighVoltagemobileinjectionunitsandothergeneratorstore-energisecommunitieswhileourcrewsrepairedthenetworkandrestoredpowerto65,000northQueenslandcustomersbetweenMackayandAyrwithintwoweeksofgettingaccesstotheimpactedarea.
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Networks Renewed
NETWORK BUSINESS
Essential Energy
PROJECT LOCATION
Collombatti and Bellingen, NSW
PROJECT PARTNERS & SUPPLIERS
EssentialEnergy,ARENA,RepositPower,
UTS&SMAAustralia
FUNDING
ARENA,partnerorganisation
contributionsandEssentialEnergy’s
DemandManagementInnovation
Allowance(DMIA)
PROJECT TIMING
September2016–September2018
CONTACT
FURTHER INFORMATION
Collombatti:www.essentialenergy.com.
au/content/batterytrial
Bellingen:www.essentialenergy.com.au/
content/invertertrial
Essential Energy partners in battery storage/solar inverter trial in regional NSW
EssentialEnergyissigningupregionalNSWresidentstoparticipateinatrialtoassessthepotentialforcustomer-ownedbatterystoragesystemsandadvancedsolarinverterstohelpbettermanagedemandfornetworkcapacity.
InajointprojectwiththeAustralianRenewableEnergyAgency(ARENA),UniversityofTechnologySydney,RepositPowerandSMAAustralia,EssentialEnergywilltestbatterystoragesystemsandadvancedsolarinverterswitheligiblecustomersinatwo-yearpartiallysubsidisedtrial.
TheruraltownsofCollombatti,north-westofKempsey,andBellingen,south-westofCoffsHarbour,havebeenselectedforthetrialduetothehighconcentrationofsolarcustomersintheareaandthepotentialtoaddressanemergingnetworkconstraint.
Theproject’stwokeyobjectivesinclude:
» Developingasetofguidelinesforfutureuptaketoensuresuchtechnologyisoptimallyintegratedanddoesnotresultincostlynetworkexpenditure
» Exploringthepossiblevaluesuchtechnologycanprovideonaleastcostbasistoaddressnetworkconstraints
Systeminstallationswillbedeliveredintwoseparatestages,withthequantityoftheseinstallationsdependantonachievingtherequirednetworkbenefit.
Duringtheinitialpilotstage,upto40customerswillreceivesubsidisedinstallationofthebatterystoragesystemsoradvancedsolarinvertersandwillretainownershipoftheequipmentaspartofthetrial.Duringthetrialperiod,participantswillreceivepaymentsbasedonthelevelofnetworksupporttheirsystemprovides.
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Networks Renewed
Thetrialhasbeendesignedaroundanopenmarketapproach,maximisingcustomerchoice,emergingmarketparticipantsandthepotentialfutureenergymarket.Subsidieshavebeenusedtoreducesystemcoststodaycomparabletothatlikelytobeseenoverthenextfewyears.
Withintherapidlychangingenergyecosystem,thekeyobjectivesoftheprojectwillhelpEssentialEnergyoperateabestpracticebusinessinperformance,efficiency,offeringvaluetocustomerswhilemaintainingdownwardpressureonnetworkcharges.
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NETWORK BUSINESS
United Energy
PROJECT LOCATION
United Energy Distribution Network in
Melbourne
PROJECT PARTNERS & SUPPLIERS
EnergyMakeovers,Sunverge,Tesla&
RepositPower
FUNDING
UnitedEnergy’sDemandManagement
InnovationAllowance
PROJECT TIMING
October2013-March2018
CONTACT
United Energy, Virtual Power Plant Pilot Project
Since October 2013 United Energy in Victoria has been undertaking a trial of Commercial and Residential Solar Storage Installations on the Distribution Network.
Aspartofthisproject,UnitedEnergyhasinstalled50kWofsolarphotovoltaic(PV)and150kWhofenergystorageacrossa10residentialcustomerpremisesand1commercial installationattheirBurwoodfielddepot
ThisprojectseekstoexploretheviabilityofutilisingsolarPVandenergystorageasanalternativetoinvestmentintraditionalnetworkinfrastructure.Itisdesignedto:
» BetterunderstandthecurrentstateofsolarPVandenergystoragetechnologyanditsabilitytoscale;
» DevelopanunderstandingoftheeconomicsofsolarPVandenergystorage;
» IdentifytherisksandtestthecontrolsfortheuseofsolarPVandenergystoragetechnologyinnetworksupportapplications;and
» ValidatetheuseofsolarPVandcontrolledenergystoragetechnologyforpeakdemandandvoltagemanagementapplicationsonthedistributionnetwork
UnitedEnergyhasselectedcustomerswithadifferentrangeofenergyusagepatternstoparticipateinthisproject.Theselectedconstrained(overloaded)assetswereidentified,wheretheuseofsolarPVandenergystoragetechnologywaslikelytobemoreeconomicthanthetraditionalaugmentationsolution.
UnitedEnergysuccessfullyprogrammedtheenergystoragesystemstoautomaticallyforecasthigh-temperaturedaysandprioritiseoperationofthesystemsfordispatchofenergyduringtheeveningpeak,whilstmanaginginternaltemperaturesoftheenergystorageunitsforoptimalperformance.UnitedEnergyhasexecutedthepeakdemandcontrolstrategyacrossarangeofenergystorageunitsinstalledinthefieldandfoundthatitisreliabletocalluponsolarPVandenergystoragetechnologyfornetworksupportandpeakdemandreductionapplicationswhenrequired.ThistrialprojectisstillongoingwithUnitedEnergyutilisingtheinstalledsolarstoragesystemstoexplorethesuitabilityofthetechnologyforvoltagemanagementapplications.
Aspartofthenextstepsforthisprogram,UnitedEnergywillseektocommencefurtherinstallationsofsolarPVandenergystoragesystemswithintheselectedconstrainedregionsofthedistributionnetworkinordertoprovethatthistechnologycanbecontrolledinconcerttodeferinvestmentsinactualplannedaugmentationprojects.
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CONSORT Bruny Island Battery Trial
TasNetworks Part of Exciting Three-Year Battery Trial
ForTasNetworks,customerownedbatteriesareanopportunitytoresolvenetworkproblemswithoutbuildingadditionalnetwork.Thisisparticularlytrueattheedgeofthegrid,wherebuildingmorenetworkisexpensive.
TheCONSORTBrunyIslandBatteryTrialisajointresearchanddevelopmentprojectthroughTasNetworks,batterycontrolsoftwarebusinessRepositPower,theAustralianNationalUniversity,UniversityofSydneyandUniversityofTasmania.Theprojectreceived$2.9MfundingfromARENA(AustralianRenewableEnergyAgency)aspartofARENA’sResearchandDevelopmentProgramme.
Overthreeyears,thetrialwilllookathowbattery-PVsystemscanbeusedbycustomersonBrunyIslandtomanagetheirenergyandsimultaneouslyhelpmanagethenetwork.
BrunyIslandwaschosenbecauseofthenatureoftheelectricitynetworkontheisland,andthedemandpeaksthatoccurthereduringholidayperiods.Deploymentofbatteriesofthissizecanmakearealandmeasurabledifference.
Thekeythemeofthisprojecthasbeencustomerchoice.Itisdesignedtoreplicateafuturewherecustomershavechosentoinstallabattery,withoutnetworkinvolvement.
Therearetwokeycomponentsofthetrial:
» abatterysubsidy,tomakeasolarandbatterysystemaffordabletoaBrunyIslandresident;
» ongoingpaymentstousethebattery,whenthereisanetworkconstraint.Thisisinitially$1/kWh.
Installationofthebattery-PVsystemsonBrunyIslandbeganinDecember2016.Upto40customerswillreceivesubsidisedinstallationofthesystems,withbatterycontrolsoftwaretoenablethemtosellelectricitybacktothegrid.
NETWORK BUSINESS
TasNetworks
PROJECT LOCATION
Bruny Island, Tasmania
PROJECT PARTNERS & SUPPLIERS
TasNetworks,RepositPower,Australian
NationalUniversity,UniversityofSydney,
UniversityofTasmania
FUNDING
ARENAfundingandpartnerorganisation
contributions
PROJECT TIMING
CommencedApril2016
CompleteApril2019
CONTACT
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Theprojectincludesworld-leadingresearch,investigating:
» newwaystomakethenetworkandbatteriesco-operatetoresolvenetworkissues;
» newwaystofairlydistributethebenefitamongstthecustomers;and
» whatcustomersthinkandfeelabouttheirenergystoragesystems,andhowthateffectswhatwemaydowiththem.
Itisenvisionedthattheseenergystoragesystemswillassistinmanaginganetworklimitationinthecablessupplyingtheisland.Theywillalleviatecongestionontheunderseapowersupplycable,andreducetherelianceonextragenerationduringpeakseasons.
Itishopedthebattery-PVsystemswillprovidealong-termalternativetotheexpensiveoptionofinstallinganotherunderseasupplycableoraugmentingtheexistingcable.
CONSORT Bruny Island Battery Trial
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Onslow Distributed Energy Resources (DER) Project
The electricity industry is undergoing unprecedented levels of change placing the traditional utility business model at risk of rapid disruption.
Withsolarphotovoltaic(PV)connectionsinWesternAustraliaaloneprojectedtoexceedhalfamillionby2025,HorizonPowerbelievesthatdistributedenergyresources(DER)arethekeytoamoresustainableenergyfuture;whereindividualscanservicenotonlytheirownenergyneeds,butcanalsohelpservicetheircommunity’sneedsthroughadynamicenergytradingplatform.
TheOnslowDERprojectwillfullyexploretheoptionsfordevelopingasafe,reliablehighpenetrationrenewableDERenergysolutionforOnslow.HorizonPowerwilldelivernewpowerinfrastructureinOnslowintwostages.
Stageonewillconsistoffourmaincomponents:
» Apowerstationwith8MWofinstalledcapacity;
» Azonesubstation;
» 33kVdualcircuittransmissionlineintothenewzonesubstation;
» Extensionsoftheexisting11kVdistributionnetwork.
Stagetwowillconsistofdistributedenergyresourcesawayfromthemainpowerstationintheformof:
» Solar;and
» Batterystorage.
UnderpinnedbyamodularefficientpowerstationandstateoftheartsolarfarmtheOnslowMicrogridwillleverageoffadvancesindigitalcommunicationsinfrastructuretointegratewithintelligentdevicesandappliancesaswellasprepareforfuturetechnologies.
FurtherdevelopmentofHorizonPower’sleadingMicroGridOperatingPlatformaimstosupportthedevelopmentoflocalcommunitiesthroughincreasedcompetitionandgreaterparticipationwhichwilllowerelectricitybills,aswellasthesubsidiesthatGovernmentpaystosupporttheprovisionofreliableenergyacrossregionalareas.
NETWORK BUSINESS
Horizon Power
PROJECT LOCATION
Onslow, Western Australia
PROJECT PARTNERS & SUPPLIERS
Stage1:DownerEDIEngineering–Power
Station,ZoneSubstationandTransmission
LineandGeographeUnderground–
DistributionNetworkextension
FUNDING
Internal
PROJECT TIMING
Stage1:January2017–March2018
Stage2:January2018–March2019
CONTACT
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Endeavour Energy SolarSaver Residential Battery Energy Storage Trial
NETWORK BUSINESS
Endeavour Energy
PROJECT LOCATION
Western Sydney
PROJECT PARTNERS & SUPPLIERS
ITPRenewables
LGChem
SMA
Reposit
FUNDING
EndeavourEnergy’sDemand
ManagementInnovationAllowance
PROJECT TIMING
April2017–March2019
CONTACT
WesternSydneyisleadingthewaywithrenewableswithmorethan100,000homesnowwithsolarsystems.Withthemarketforresidentialbatterystoragealsorapidlyevolving,therearenowbothopportunitiesandbarriersassociatedwiththistechnologythatwillbeimportanttounderstandtoensuretheeffectiveandefficientdeploymentonelectricitynetworks.
Asasociallyresponsiblebusiness,EndeavourEnergyisworkingwithlocalcommunitiestodevelopprogramsthatuseelectricitymoreeffectivelyandefficientlywhilestillmeetingtheenergydemandsofourcustomers.
TheEndeavourEnergySolarSaverprogramaimstousetheenergystoredinabatteryinstalledinselectedhomeswithsolarpanels,toreducetheelectricitydeliveredfromthenetworkduringpeakdemandtimes.Ratherthanbuildingandmaintainingadditionalelectricitynetworktobeusedonlyafewdaysayear,SolarSaver isoneofanumberofnewprogramsusingamoresustainablewaytoreducepeakdemandandhelpresidentialcustomersuseelectricitymoreefficiently
UnderSolarSaver,customerswithasuitableexistingsolarpowersysteminvitedtoparticipatewillbeabletopurchaseabatterysystemfromaselectedsupplierfor25%ofthetotalcost.Inreturn,EndeavourEnergywillusetheenergystoredinthebatterytoreducetheelectricitydeliveredfromthenetworkduringpeakdemandtimes.ThebatterysystemcomprisesofaLGChem9.8kWhHVbattery,SMASunnyBoyStorage2.5kWbatteryinverter,and
Repositsmartmonitoringandcontrolkit.
Inadditiontothegeneroussubsidyforpurchaseofthebatterysystem,participatingcustomerssavemoneyontheirelectricitybillsbystoringexcessenergyfromtheirsolarpanelsandusingitduringpeakhoursorsellingittoselectedretailerswhenthespotmarketpriceishigh.
EndeavourEnergywillbecollectingenergydatafromtheinstalledsystemsuntiltheprogramendson31March2019.Theenergystoredinthebatterieswillbeusedtoreducetheelectricitydeliveredfromthenetworkduringpeakdemandtimes.Reducedinvestmentintheelectricitynetworkneededtocopewithpeakdemandwillhelpkeepthecostofelectricitydowninthefuture,sothateveryonewillbenefit.
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Endeavour Energy SolarSaver Residential Battery Energy Storage Trial
EndeavourEnergywillremotelycontrolthecharginganddischargingofthebatteriesupto12timespersummer(1Novemberto31March)andwinter(1Mayto31August)period.Themainobjectivesofthetrialinclude:
» quantifyingthenetworkdemandreductionpotentialfrominstallingbatteryenergystoragesystemsinresidentialpremises;
» understandingthecustomerbenefits;and
» buildingonthedemandmanagementcontrolcapabilitiesofthenetwork.
Asecondaryaimofthetrailistotestthepowerqualityimprovementcapabilitiesofbatteryenergystoragesystems.
EndeavourEnergytargetedcustomerswithexistingsolarpanelsofdifferentsizesthataresuppliedbytheParkleaZoneSubstationwhichhasthehighestpenetrationofPVsystemswithinEndeavourEnergy’sdistributionarea.ParkleaZoneSubstationisalsoforecasttoexceeditsfirmcapacityduetotheincreasedgrowthfromthere-zoninganddevelopmentsalongtheNorthWestRailcorridor.
TheSolarSaver recruitmentcampaigncommencedinApril2017withdirectmailpackssenttotargetedcustomersdirectingthemtoregistertheirinterestonline.Customersthatmettheregistrationcriteriaprogressedtothenextstageofhavingasiteinspectiontoconfirmtheireligibilitybeforethebatterysystemisinstalled,withthefirstinstallationexpectedinlateMay2017.
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Mooroolbark Community Mini Grid
Australia is in the midst of an energy revolution.
Thegrowthinsolarpower,energystorageandsmartcontroltechnologyhasthepotentialtochangethewaysocietyproduces,usesandsellsenergy.
Tohelpprepareforthisfuture,AusNetServicesistriallingAustralia’sfirstminigridinanestablishedcommunity.TheprojectenvisagesafuturewhereDistributedEnergyResources(DER)playamajorroleintheelectricitysupplysystem,andthedistributionnetworkbecomesadynamicplatformthatfacilitatestradeofenergyandenergyservices.
Toestablishamodelofthefutureelectricitynetwork,atypicalsuburbancommunitywasapproachedtotakepartintheCommunityMiniGridproject,withtheofferofsolarpowerandbatterystoragetobeinstalledatcustomerpremises.Theprojectencompassesthedesign,buildandoperationofa16householdminigridwithinasinglestreetinMooroolbark,atypicalsuburbancommunityinMelbourne’sEast.Allcustomersareconnectedtoacommondistributiontransformerviatypical3-phaseoverheadlowvoltagereticulation.Theprojectinvolves:
» Rooftopsolarphotovoltaic(3+kW)andbatterystoragesystems(5kVA/10kWh)at14of16houses;
» Centralnetworkdevicesincludingaswitchingcabinet,powermeter,andminigridstabilisersystem(15kVA/10kWh)atthelowvoltagegridconnectionpointtoallowtheminigridtotemporarilyseparateandoperateinislandedmode;
» Amonitoringandcontrolsystemthatcanoptimisepowerflowswithintheminigrid,performaggregatedcontrolfunctions,andwhichfeedsintoanetworklevel“DistributionSystemOperator”platform;
» Acustomerwebportaltoallowcustomerstomonitorandconfiguretheirenergysystems;and
» Thepotentialtoaddanairconditionerload-controltest.
NETWORK BUSINESS
AusNet Services
PROJECT LOCATION
Mooroolbark, Melbourne
PROJECT PARTNERS & SUPPLIERS
GreenSync:Maincontractorfor
residentialenergysystemsandminigrid
controlsystem
Power Technology Engineered
Solutions: Designanddeliveryof
minigridstabiliser
EIV:DesignanddeliveryofLV
switchingcabinet
SUPPLIERS
ResidentialSolar:EnergyMatters,
JASolarandFronius
ResidentialBatteries:LGChem,
SelectronicandEcopower
Stabilisersystem:Toshiba,Vaconand
FreestyleTechnologies
FUNDING
RegulatedfundingundertheDemand
ManagementInnovationAllowance
PROJECT TIMING
Commencementdate:January2016
EXPECTED COMPLETION DATE
December2018
CONTACT
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TheminigridprojectseekstoinvestigatethevaluetothenetworkthatconcentratedDERcanprovidewhencoordinatedbyanetworkoptimisationscheme,theimpactsonthenetworkthatmayarisefromcustomerdrivencontrolofDER,aswellascustomerpreferencesregardinglocalenergysupplies.
Theprojectwilltestscenariossuchaspeakdemandmanagement,solarexportmanagement,virtualpowerplantoperation,responsetowholesalemarketsandlocalenergysharing.TheperformanceofDERsystemsinprovidingtemporarybackupsupplywillalsobetested,bothasindividualcustomersandasaninterconnectedminigridwhileislandedfromthemainnetwork.
Alltheresidentialandcentralhardwaresystemshavebeendeployedandareoperationalfollowingadetailedprotectionandsafetyreviewandcommissioningprocess.Theremotemonitoringsystemisinplaceandissupplementedbya24/7incidentresponseplanthroughtheissueandresponsetoSMSalerts.Systemintegrationhasproventobeachallengethroughouttheproject,howevertheminigridcontrolsystemisnowbeingimplementedwithasuiteofcomponentandsystemcontrolsscheduledtobedeployed.Testingisunderwayusingavailablecontrolssuchassolarexportlimitationandindividualbackuppowerprovision.Afullminigridislandoperationtesthasbeenundertakenwheretheminigridwasseparatedfromthemaingrid,temporarilypoweredby100%inverter-basedsupplies,andthenre-integratedtothemaingrid.
Establishingandnurturingcustomergoodwillthroughoutthetrialprocesscontinuestobeakeyactivityandanessentialingredientforsuccess.Giventhetimeandresourcecommitmentrequiredtomanagetheinstallationoftheresidentialenergysystems,animportantlearningexperienceforfutureinitiativesistopreferenceanengagementstructurewherecustomerstakesomeresponsibilityforproductselectionandinstallation,subjecttoanyinteroperabilityrequirements.
Mooroolbark Community Mini Grid
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Stand-Alone Power System (SPS) Pilot
NETWORK BUSINESS
WesternPower
PROJECT LOCATION
Ravensthorpe,WestRiver,LakeKing
andOngerup,WesternAustralia
PROJECT PARTNERS & SUPPLIERS
HorizonPowerandSynergy
FUNDING
Thisprojectwasfundedfrominternal
WesternPowerbudgets
PROJECT TIMING
July2016–July2017
CONTACT
[email protected] Western Australia, significant sections (about 40,000 km) of the fringe-of-grid assets were constructed under rural electrification policies of the State Electricity Commission of Western Australia between the late 1950s and the 1980s. Today, the age of network in these regions typically exceed 30 years of age and will be scheduled for replacement or refurbishment over the coming years.
Thehistoricalchallengeofrelativelylowpopulationdensityoveralargearearemainsessentiallyunchangedinthe21stcenturyleadingtohighcoststoservecustomers.
Localgenerationsupplyoptions,forexample,stand-alonepowersystems(SPS)haveevolvedinrecentyearsand,insomecircumstancespresentasafer,morereliableandmoreeconomicallyefficientalternativetonetworkrebuildforsomecustomersattheedgeofthedistributionnetwork,wherethereislowcustomerdensityandcustomershavelowelectricityconsumption.
InJuly2016WesternPowerinstalled6hybridphotovoltaic/diesel/batteryStand-alonepowersystemsinRavensthorpe,LakeKingandOngerupareasattheedgeoftheSouthWestInterconnectedNetwork(SWIN)aspartofa12monthtrialtotestthesuitabilityofthistechnologyasanalternativetoatraditionalnetworksolutionaswellasgaugecustomerresponsetothetechnology.
Installedsystemsconsistofsolarphotovoltaics(PV)ranginginsizefrom9-19KWandlithiumbatterystorageranginginsizefrom40–80kWh.Systemsalsoincorporateadieselgeneratortosupportthesystemduringperiodsofhighcloudcover.Systemsizesbetweenparticipantsvaryasunitshavebeendesignedtomeetthetypicalelectricalloadexperiencedateachsite.
SuitablepotentialsitesfordeploymentofSPSwereselectedviaanalysisofnetworkdata.Edgeofgridlineswerefilteredtolocateareasofthenetworkwithageingassets,lowcustomerdensityandrelativelylowenergyuse.Candidateswererefinedfurtherbyfilteringformediumtohighbushfireriskareaswhereasafetybenefitcouldalsoberealised.
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ItwasdeterminedatearlystagesoftheprojectthatahybridPV/diesel/batterysystemwasthemostsuitablesystemtoconsiderasanetworkreplacementoption.CoststoprocureanddeployanSPSsolutionwasestimatedfromtenderbidsreceivedthroughanearlierRequest-For-Informationprocess.Lifecyclecostsforthissolutionwerecomparedtoatraditional“polesandwires”networkrebuild;wherelifecyclecostsoftheSPSsolutionwerelessthanorequalto50%ofthenetworkreplacementcostitwasconsideredtobeacandidateforSPSdeployment.
AdetailedfunctionalspecificationwasdevelopedincollaborationwithHorizonPowerandwassubsequentlyputtomarkettofindasuitabletechnicalpartnertodesignandinstallaswellasoperateandmaintaintheSPSunits.
Simultaneouslytoprojectactivities,WesternPowerhassubmittedarulechangerequesttotheAustralianEnergyMarketCommission(AEMC)requestingthatemergingtechnologysolutions(suchasstand-alonepower)bereclassifiedasformingpartofadistributionserviceascurrentdefinitionspreventwiderimplementationofthesetechnologies.SimilardiscussionshavetakenplacewithWesternAustralianregulatorybodies.
Learningstodatefromthetrialhavebeenpositive.KeyoutcomesfromPhase1ofthetrialare:
» Customerfeltreliabilityhasimproved;trialparticipantshaveexperiencedsignificantlylesspowerinterruptionsthanknownnetworkinterruptionsonthesamefeeders;
» FeedbackfromcustomershasindicatedaveryhighlevelofsatisfactionwiththeperformanceoftheSPSunitoveratraditionalnetworksolution;
» Thesystemshavebeenrobustenoughtosurviveextremeweathereventsandexhibitedonlyminortechnicalissuesundernormaloperations;and
» Theneedfordetailedcustomerequipmentauditsandenergyusagewasseenasanecessarysteptoidentifyanynon-standardloadswithinthecustomer’sfacilitywhichhavethepotentialtonegativelyimpacttheoperationoftheSPSunit.
Giventhesuccessofthetrialtodate,WesternPowerisintheprocessofdeterminingthenextstepsforthesixinstalledtrialSPSsites,andpendingtheresolutionofstatutoryandregulatorybarriers,WesternPowerisinvestigatingthepotentialforawiderrolloutofSPSasanetworkreplacementtool.
Stand-Alone Power System (SPS) Pilot
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United Energy, Dynamic Voltage Management System Trial
NETWORK BUSINESS
UnitedEnergy
PROJECT LOCATION
UnitedEnergyDistributionNetworkin
Melbourne,Victoria
PROJECT PARTNERS & SUPPLIERS
DynamicRatings&CGI
FUNDING
UnitedEnergyRegulatoryAllowance
CapexFunding
PROJECT TIMING
July2017toAugust2017
CONTACT
[email protected] Conservation voltage reduction is a proven method for reducing energy and peak demand on distribution networks.
UnitedEnergyhashistoricallyonlyusedthisunderemergencysituationstoavoidload-sheddingintheabsenceofAMIvoltagemeasurements.
Withadvancedmeteringinfrastructure(AMI)nowrolledoutthroughoutVictoria,thereisanopportunitytoapplyconservationvoltagereduction(CVR)withouttheriskofviolatingVictorianDistributionElectricityCodelimitsbyusingthereal-timevoltagemeasurementsfromAMItoinformthemagnitudeofthevoltagereduction.
ApreliminaryanalysisonvoltagedataprovidedbyAMIhasshownthereisopportunitytousethisvoltagedatatodynamicallymanagevoltagesonthenetworkandimprovesteady-statevoltageregulatorycompliance.Thisisexpectedtodeliverpotentiallylargestepchangesinsteady-statevoltagecompliance.Thisprojectaimstotestthetechnicalfeasibilityofconservationvoltagereductiontoregulatevoltagesandimprovethesteady-statevoltagecompliancetotheCode.
CVRisimplementedbycontrollingthevoltagewithintheregulatorylimitsdefinedbytheCodeusingon-loadtapchangesatzonesubstations.ThisprojectisrequiredtotestthetechnicalfeasibilityofCVRtoregulatevoltagesandimprovethesteady-statevoltagecompliancetotheCode.
ThisprojectaimstotrialtheCVRtechniqueontwozonesubstations.ToimplementCVR,voltagedataprovidedbythesampledmeterssuppliedfromazonesubstationisgatheredandsenttotheNetworkAnalyticsEnginetomakedecisionsonoptimisingthevoltagesaccordingtothedynamicloadpattern.Thecontroltoactivatetheappropriatepre-definedvoltageset-pointwillthenbesenttotherelevantvoltageregulatingrelay(VRR)atthezonesubstation.TheSCADAapplicationwillprovideUnitedEnergywiththeadvancedcapabilitytomanagevoltageconservationswithinthenetwork.Ithasbeenproposedtoapplypre-definedvoltageset-pointstotheVRRsatthenominatedzonesubstations.
InitialanalysisontheAMIdatahasshownthattheproposedschemewithinthenominatedzonesubstationscanresultinstep-changeimprovementsinthequalityofsupplycompliance,inparticularduringperiodsoflightload.
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Crotty Dam Remote Area Power Supply
Crotty Dam is a remote site owned and operated by Hydro Tasmania, and is located along Lake Burbury approximately 25km southeast of Queenstown on the western coast of Tasmania.
Therearetwohydroelectricsitesonthewesternshoreofthedam;awaterintakeshaftfortheundergroundtunneltoJohnButtersPowerStation,andadewateringshaftlocatednexttoCrottyDam.
TheCrottyDamsiteswerebuiltinatimewhenitwasnoteconomicallyviabletosupplypowertoremotecustomerswithoff-gridtechnologies.AtthattimeinordertoprovidepowertoCrottyDam,a12.7kmthreephase22kVfeederwasinstalled.Ongoingassetreplacementsandheavyvegetationcutswerenecessarytomaintainthefeeder;andthismaintenancewasnolongerconsideredtobethemostcosteffectivesolution.
ThroughadvancementsintechnologyanewproposalwasputforthbyTasNetworkstobuildanoff-gridsolutiontosupplyCrottyDam.
RemoteAreaPowerSupply(RAPS)areacosteffectivealternativetosupplyingelectricitytocustomers“onthefringe”oftheTasNetworkstransmissionanddistributionsystem.Theprojectisself-fundedbyTasNetworksasaregulatedcapitalinvestment.Equipmentsupply,designandinstallationwereprovidedbyThiessServices(previouslySilcarPersonnel).TheprojectwascompletedinApril2014.
TheRAPSsystemswereconsideredatechnologytrial.Therearemanyotherremotesitesthataresuppliedbyageinglongspurdistributionlineswhicharecostlytomaintain.RAPSmayalsobeamorecosteffectiveoptiontosupplythelocalcustomerscurrentlysuppliedbytheselines.
In2014/15twoRAPSsystemswereinstalledandcommissionedatCrottyDam,withthedesignandtechnicalsupportconductedbyThiessServices(previouslySilcarPersonnel).Thesitesarenowpoweredbyamixtureofdieselgenerationandbatterystorage.
The22kVlinewasdecommissionedin2015,avoidingtheongoinglinemaintenanceandreplacementcosts.
Asatrial,theCrottyDamRAPShasprovidedvaluablelearningsforthebusiness,theseincludeprocessimprovementstocovernewtechnologies,butalsotechnicalknowledgefortheRAPSdesignandconstruction.
TasNetworkswillworkingtostandardiseRAPSassetssothatthetechnologycanbesimilarlydeployedatfuturesimilarsites.
NETWORK BUSINESS
TasNetworks
PROJECT LOCATION
Crotty Dam, West Coast Tasmania
PROJECT PARTNERS & SUPPLIERS
TheissServices
FUNDING
TasNetworksregulatedfunding
PROJECT TIMING
RAPScommissionedinApril2014,line
removedin2015.
CONTACT
TasNetworks
18
Endeavour Energy Grid Battery Energy Storage System (BESS) trial
NETWORK BUSINESS
Endeavour Energy
PROJECT LOCATION
Dapto, NSW
PROJECT PARTNERS & SUPPLIERS
Inprocurement
FUNDING
Pilotprojectfundedfrominternal
EndeavourEnergybudgets
PROJECT TIMING
Forthesummer2018-19
CONTACT
Energy storage is a potential solution to the critical challenges facing the power grid today by providing customers a safe and reliable power supply without having to build more expensive network upgrades.
Batterystoragesystemsalsohavesignificantpotentialtohelpmanageloadgrowth,peakdemand,powerqualityandsupplyinterruptions.Withmorehomesolarsystemsbeinginstalled,energystorageisalsoimportantinenablingrenewableenergytobesavedforusewhencustomersneeditthemost.
Inwhatwillbeafirstinitsnetwork,EndeavourEnergyisundertakingatrialtoquantifytheefficiencyandnetworksupportbenefitsofagrid-scaleBatteryEnergyStorageSystem(BESS).ThetrialinvolvestheinstallationofaonemegawatthourbatterystoragesystematthefuturesiteofEndeavourEnergy’sWestDaptoZoneSubstationintheIllawarraregion.Onceinstalled,theBESScoulddeferconstructionoftheproposedWestDaptoZoneSubstationforseveralyears.
Thelocationwasselectedforthepilotduetothescaleoffutureresidentialdevelopment,thepeakloadcharacteristicsoftheareaoversummerandtheageoftheexistingnetwork.Whenfullydeveloped,theWestLakeIllawarraReleaseareaswillcontain27,000newdwellings.
ThepilotBESSwillbecontainerisedandmodularforeaseofrelocation,andwillconsistof:
» 1MWhrBattery
» AC/DCPowerConversionSystem
» 11kVStep-upTransformer
» HVProtectionandControl.
Thetrialwilltestthepotentialofbatterystorageinareal,grid-scalesettingandprovideEndeavourEnergywiththeexpertisetoutilisethistechnologyasfutureneedsarise.Similarbatterysystemscould
19
Endeavour Energy Grid Battery Energy Storage System (BESS) trial
bedeployedinothergrowthareasofEndeavourEnergy’snetworktodefertheconstructionofuptofournewzonesubstationsby2024andreducenetworkinvestmentbyupto$1millionperyear,keepingdownwardpressureonnetworkcharges.
ThisissignificantasEndeavourEnergyservicesthehighgrowthregionsofNSW,withthepopulationofGreaterWesternSydneyforecasttogrowapproximately46%by2031.WhiletheoverallNSWpopulationgrowthisforecasttobestrongat1.2%p.a.over20years,overwhelminglythegrowthisconcentratedinGreaterWesternSydney,withtheregion’spopulationforecasttogrowbyalmostonemillionpeople(46%)overthetwodecadesfrom2011to2031.
EndeavourEnergy’snetworkincludestheNorthWestandSouthWestPriorityGrowthAreasofSydney,establishedin2005toaccommodate500,000newresidentsover30years.TheseprioritygrowthareasaretheresultofthebiggestcoordinatedlandreleaseinNSW’shistory.
Generallytheexistingnetworkintheseareasissetupforthesupplyofruraltypeloadsandisnotsuitabletosupplythefutureurbandevelopment.Traditionalnetworksolutionstomeetdemandintheseinstanceshavebeentoaugmenttheexistingdistributionfeeders,andwhenthisisinadequate,constructagreenfieldzonesubstation.
AlternativelyaBESScanmeetshorttermdemandwithsupplementarysupplytodeferboththeaugmentationoftheexistingnetworkandtheestablishmentofthefinalsupplyinfrastructure.Ithasthepotentialtoimprovethequalityofelectricitysupplyinconstrainedpartsofthenetworkandprovidebackuppowerduringnetworkoutages.
TheBESSpilotprojectiscurrentlyintheprocurementphaseandisexpectedtobeinstalledandcommissionedatWestDaptobeforesummer2018.
20
Esperance Standalone Power System Project
NETWORK BUSINESS
HorizonPower
PROJECT LOCATION
Esperance,WA
PROJECT PARTNERS & SUPPLIERS
EMC,GHD
FUNDING
Internal
PROJECT TIMING
December2015–October2016(nowin
permanentoperation)
CONTACT
Devastating fires in November 2015 caused widespread damage to the Esperance power system including the loss of 324 poles.
Ratherthanreplaceallofthedamagedoverheadequipment,HorizonPowerelectedtorestorepowersupplytoanumberofcustomersusingStandalonePowerSystems(SPSs).
ThiswasenabledbytheworkHorizonPowerhadpreviouslyundertakenwithWesternPowerontheSPSPilotforRavensthorpe,whereHorizonPower(asWesternPower’s“TechnicalPartner”inthatproject)hadsufficientknowledgeofSPSstobeabletostepintoareal-worldapplicationoftheequipment.TheprojectwasdesignedtoreplacethedamagednetworkwithaviableSPSalternativeandenableHorizonPowertoundertakeitsownSPSrollout.TemporarydieselgeneratorswereinstalledtoprovidepowerwhilewaitingfordeliveryofthepermanentSPSsolution.
TheprojectdeliveredStandalonePowerSystems(SPSs)tofivecustomersintheEsperanceregion,witheachsystemcomprising:
» GroundmountedsolarphotovoltaicPVof8-12kW
» Centralbatteryinverterof6kW,between1and3persite
» Batterystorageusingrackable1.2kWhbatterieswithsizingoptimisedfortheparticularcustomer
» Adieselgeneratorof15-20kVA
HorizonPowerdidnothavegoodmeteringinformationforthesecustomersasnon-intervalmeterswereinplacepriortotheNovember2015fires,withonlyannualmeterreads.Thereforethedecisionwastakentoinstallasimilarsystematallsitesthatcouldbeaugmentedlatertosuitthespecificcustomerenergyrequirements.Macroissuesweredealtwith,suchassinglephasevsthreephase,thenumberofbatteryinverterssufficienttomeettheexpectedpeakloads,andalayouttosuittheavailableland.Followingtheinitialinstallationandcommissioning,additionalbatterystoragewaslateraddedtominimisethesystems’dependenceonthedieselgenerator.
HorizonPowerimplementedatailoredCustomerAgreement,whichwasamodificationoftheStandardFormCustomerContracttoenablethespecificconsiderationsofSPStobecateredfor.
ThesystemsweredeliveredbetweenMarchandMay2016.Followingcommissioningallsystemshaveproventobereliable.ThebatteryaugmentationwascompletedinOctober2016,andthisisontracktolimitthegeneratorruntimetolessthan250hoursperyear.
SPSisnowanadditionaltooltobeusedinHorizonPower’snetworkplanning.
21
Summer Saver Program
Figure 1: 7 January event results
NETWORK BUSINESS
UnitedEnergy
PROJECT LOCATION
UnitedEnergyDistributionNetworkin
Melbourne,Victoria
PROJECT PARTNERS & SUPPLIERS
Bidgely
FUNDING
UnitedEnergyDemandManagement
InnovationAllowanceandRegulatory
AllowanceOpexFunding
PROJECT TIMING
December2016-March2017
CONTACT
The United Energy distribution network has observed growth in maximum demand exceeding growth in average demand for many years.
Thisresultsinanincreasingpercentageofnetworkcapacitybeingunderutilisedexceptduringhotweather.Currentlythetop20%ofsystemcapacityisusedforapproximately1%oftheyear.Toaddressthisissue,UnitedEnergyintroducedtheSummerSaverProgramtoprovideanalternativetothetraditionalsolutionofbuildingnewinfrastructure.TheProgramincentivisescustomerstoreducedemandduringtimesofmaximumdemand,thusachievingnetworkaugmentationdeferral.
SummerSaverProgramisavoluntaryresidentialdemandresponseprogramthatisrunfromDecembertoMarcheveryyear.Customersconnectedtocapacityconstrainedsitesarerecruitedtoparticipateintheprogramandcalledtoprovidedemandreductionsduringtimesofnetworkconstraintwhichusuallyoccurwherethemaximumtemperatureisabove35°C.Customersareprovidedwithasmart-phoneappthatallowsreal-timemonitoringofenergyusageduringevents.Thecustomers’smartmetersareutilisedtoprovidethereal-timeusageinformation
First,suitabilityofcapacityconstrainedsitesonthedistributionnetworkfortheSummerSaverProgramisevaluated.Customerseligibleatthecapacityconstrainedsitesarethenrecruitedviadirectmarketingtoparticipateintheprogram.Registeredcustomerwillbenotifiedinadvancethroughemailandthesmart-phoneapplicationofaneventoccurring.Customersarealsoinformedonthetimingandtheirpreviousconsumptiononlikedays.
Theprogramhasbeenatremendoussuccesswithonaverage77%ofparticipantsoutof552successfulacrossalltheevents.Successfulcustomersonaveragereduced1kWindemandduringtheevents.ThishasallowedUnitedEnergytodeferaugmentationat92sites.Resultsofaneventon7January2017aredemonstratedinFigure1.
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