Strategic Planning Engineer - Engineering Education Australia

Grid connected battery energy storage
AssetManagement
Energex Limited
March 2016
A presentation to 2016 API Summer School
Energex…
drivingenergy
innova9on
Contents
• 
• 
• 
Energexba+erytrials
Gridconnectedba+erystorage
Casestudies
2
Impactsofemergingtechnologiesontheelectricityindustry
Consumers of electrical energy becoming more
involved in their energy consump9on and, in some
cases,produc9on.
3
Uncertaintyinconsumerbehaviour=Newsetofchallenges
“OurConnectedFuture”
Source:CSIRO–2050Scenarios
4
Ba?erystoragetrial
*enquiriescanbeemailedto:batetrytrials@energex.com.au
5
Ba?erystoragetrialatRocklea
6
Moretocome…
•  SmallcommercialBESS
•  LargecommercialBESS
•  Demonstra9onsiteforpublicviewing(educa9onal
site)
•  Market-basedtrialforresiden9alcustomers
Source:Teslamotors.com
*enquiriescanbeemailedto:batetrytrials@energex.com.au
7
Situa9on
Problem
Op9ons
Solu9on
ElectricalEnergyStorage:
TechnologyOverviewandApplicaHons
•  TheuniqueAustralianclimate&storagetechnologies.
•  Ba+eryopera9ngcondi9ons(charge\dischargestrategy)arecri9cal.
•  Interplay between ba+ery opera9on that benefits the customer and the network is
notstraighborward.
•  Safety regula9ons/standards are significantly delaying the availability of various
energystoragetechnologiesandtheirpoten9aldeploymentscenarios.
Source:CavanaghK,WardJK,BehrensS,Bha+AI,RatnamEL,OliverEandHaywardJ.(2015).Electricalenergystorage:technologyoverview
andapplica9ons.CSIRO,Australia.EP154168
8
GridconnectedBa?eryStorage
•  TeslaPowerpack250kW,488kWh
TeslasaysPowerpackisdesignedto:
•  Maximizeconsump9onofon-siterenewablepower.
•  Avoidpeakdemandcharges.
•  Buyelectricitywhenit’scheapest.
•  Getpaidbyu9lityorintermediateserviceprovidersforpar9cipa9ngingrid
services.
•  Backupcri9calbusinessopera9onsintheeventofapoweroutage
Furtherreading:
RachelCarnegie,DouglasGotham,DavidNderitu,PaulV.Preckel,“UHlityScaleEnergyStorageSystems-benefits,ApplicaHons,andtechnologies”,StateU9lityForecas9ngGroup,June
2013
9
Possiblebenefitsofba?erystorage
Avoidpeakdemandcharges
Peakreduc9on
MaximizeconsumpHonof
self-generaHon
Buywhenelectricityischeaper
Be+erassetu9lisa9on/loadprofile
Financialbenefitsfromproviding
ancillaryservices
Efficientpowerquality/reliability
Limitintermi+entexport
Moreaffordableelectricity
Backupduringnetwork
outage/be?erreliability
Improvedreliability
Defer/avoidnetworkaugmenta9on
EnableintegraHonofmore
renewables
Avoidreversepowerflow/be+er
assetu9lisa9on
Furtherreading:
“TheEconomicsofBa+eryEnergyStorage”,RockyMountainIns9tute,September2015
10
EnableintegraHonofmorerenewables
Avoidreversepowerflow/be+erasset
u9lisa9on
11
Situa9on
Problem
Op9ons
Solu9on
SolarinstallaHoninQueensland
QLDSolar
-  Almostallsolarinstalla9onsareownerpaidsystems.
-  Majorityarerooropresiden9alsystems(3.5kW).
-  Largercustomersinstallsolartoavoiddemand
charges.
-  Ba+ery storage is not a+rac9ve to customers with
feed-intariff(44c/kWh).
-  Possiblebenefitsofba+eryareoffsetngpeak
demandandmaximisingon-siteconsump9on.
12
Situa9on
Problem
Op9ons
Solu9on
Loadprofilesofa11kVfeederwithhighpenetraHonofresidenHalPV
Unexpectedhot,
humidandcloudy
day(3Feb)
4.2in10
DetachedhomeshavesolarPV.
Typicalsunnyday
withli+lecloud
coverage(28Jan)
13
Situa9on
Problem
Op9ons
Solu9on
85Amp
179Amp
WeatherimpactonafeederwithhighpenetraHonofresidenHalsolar
14
Situa9on
Problem
Op9ons
–  Voltagerise
–  Reversepowerflow
–  Phaseimbalance
Situa9on
• 
• 
• 
• 
• 
• 
• 
Problem
Op9ons
Solu9on
–  Gridvoltagefluctua9ons/frequencychanges
–  Powerquality(shorttermfluctua9ons)
–  Protec9on/faultdetec9onissues
Solu9on
Donothing!
Distribu9ontransformertapsetng
Voltageregulatorsetng
Networkaugmenta9on
Loadcontroltoshirmoreloadtoday-9me
Ba+erystorage
Dynamicexportstrategy
50,000
16.4MWpeak
reduc9onon1st
Feb
700,00
0
25,000
15
Situa9on
Problem
Op9ons
Solu9on
Reversepowerflow(11kV/400VdistribuHontransformer)
16
Situa9on
Problem
Op9ons
Solu9on
Reversepowerflow(11kV/400VdistribuHontransformer)
300
Load(kW)
250
200
150
100
50
0
-50
365kWh
-100
Load(kW)
17
Situa9on
Problem
Op9ons
Solu9on
Ba?erystoragecouldmiHgatereversepowerflow(11kV/400VdistribuHontransformer)
Needtoknow:
• 
• 
• 
• 
Loadforecast(distribu9ontransformer/LVnetwork)
PVgenera9onforecast
Op9malba+erycharge/dischargealgorithm
Ba+eryalloca9on(Sizeandloca9on)
365kWh
18
Situa9on
Problem
Op9ons
Solu9on
Reversepowerflow&overloadedTR(11kV/400VTRX)
854kWh
523kWh
19
Avoidpeakdemandcharges
MaximizeconsumpHonof
self-generaHon
Peakreduc9on
Limitintermi+entexport
20
Situa9on
Problem
Op9ons
Solu9on
ConnecHngC&IsolarPVtoaLVfeeder
What’sthelimit?What’stheimpact?What’sthesoluHon?
224kWhPVwith
89kWhExcessPV
124kWhPVwith
40kWhExcessPV
21
Situa9on
Problem
Op9ons
Solu9on
Dynamicexport/Ba?erystorage
NeedtoidenHfy:
•  Theimpactonthenetwork
•  Availablecontrol&communica9on
•  Efficientba+eryopera9on
•  Benefitstothenetworkandthecustomer
22
ResearchquesHons
• 
How does BESS integrate with PV?
• 
What are the impacts of tariffs and incentives on BESS uptake?
• 
What is the value proposition for Energex in having control of BESS?
• 
What are the impacts of DER on Energex network (LV and MV networks)?
• 
How can intelligent data analytics improve locating faults/voltage profile issues on LV
network?
23
Thankyou.
DanielEghbal
StrategicPlanningEngineer
AssetManagement,Energex
T:0736645604
M:0423046607
E:danieleghbal@energex.com.au