Post Trade Show Report By: Chinmay Chhatiawala & Emeka Louis Ichoku.
1 American Electric Power Energy StorageDeployments Energy Storage Deployments Low-Voltage D.C....
-
Upload
kelly-bryan -
Category
Documents
-
view
212 -
download
0
Transcript of 1 American Electric Power Energy StorageDeployments Energy Storage Deployments Low-Voltage D.C....
1
American Electric PowerAmerican Electric PowerEnergy StorageEnergy Storage DeploymentsDeployments
Low-Voltage D.C. WorkshopLow-Voltage D.C. WorkshopApril 8, 2011April 8, 2011
Emeka OkaforEmeka Okafor
Research ProgramsResearch Programs
2
American Electric Power : Company ProfileAmerican Electric Power : Company Profile
3
The Evolution of the Electric Utility SystemThe Evolution of the Electric Utility System
Before Smart Grid:
One-way power flow, simple interactions, limited sources of renewable generation
After Smart Grid:
Two-way power flow, multi-stakeholder interactions, increased penetration of renewable generation
Adapted from EPRI Presentation by Joe Hughes NIST Standards Workshop
April 28, 2008
4
Smart Grid Enables Energy StorageSmart Grid Enables Energy Storage
Adapted from EPRI Presentation by Joe Hughes NIST Standards Workshop
April 28, 2008
But where is the best location/size for the storage ?
5
Energy Storage OptionsEnergy Storage Options
6
AEP’s 1AEP’s 1STST Substation Battery Substation Battery
2006
1MW, 7.2 MWh of NaS battery
Deferred New Substation
Tyler Mountain Feeder12 kV bus
North Charleston Feeder
West Washington FeederVoltage Regulator
46kV/12kV Transformer
12/16/20 MVA
46 kV bus
This First Utility-Scale NAS Project in the U.S. was Partially Funded by DOE/Sandia
NGKS&CAEP
Chemical StationCharleston, W.VA.
7
AEP 2006 Project – Peak Shaving
• Scheduled trapezoidal Charge & Discharge profiles
• Summer Month Peak Days
• Improved the feeder load factor by 5% (from 75% to 80%) + 1.2 MW Charge
- 1.0 MW Discharge
2007
2006
2008Three Successful Years of
Peak Shaving
8
AEP Storage 2010 – 11MW, 75MWh
1 MW, 7.2 MWh installed in 2006
• Deferred substation upgrades
3 - 2MW,14.4 MWH Commissioned in 2009
• Implemented “Load Following”
• Demonstrated “Islanding (Backup Power)”
4MW, 25MWh substation on-line in 2010
The New “Islanding” feature is Partially Funded by DOE/Sandia
9
Load Following Peak Shaving
Circuit Demand
10
Churubusco, IN:Churubusco, IN: Battery Islanding Zones. Battery Islanding Zones.
Station
11
Islanding (Backup Power) EventsIslanding (Backup Power) Events
Event 1 Event 2 Event 3
Location Milton, WV Milton, WV Milton, WV
Customers on Backup Power 25 700 700
Duration on Backup Power 48 hours 1hr 17 mins 10 hours
Cause of Outage Ice Storm Vehicle Accident Electrical Fault
Date Dec 2009 Nov 2010 Mar 2011
12
Community Energy Storage (CES)Community Energy Storage (CES)
CES is a fleet of small distributed energy storage units connected to the secondary of transformers serving a few houses controlled together to provide feeder level benefits.
Key Parameters Value
Power 25 kW
Energy 75 kWh
Voltage - Secondary 240 / 120V
Battery Li-Ion
Round Trip AC Energy Efficiency
> 85%
Functional Specifications for CES are “OPEN SOURCE” In 2009 EPRI hosted open webcasts to solicit industry wide input.
www.aeptechcenter.com/ces
25 KVA
13
CES – Benefits to the CustomerCES – Benefits to the Customer
Local Benefits:1) Backup Power
2) Renewable Integration
3) Voltage correction
Substation
Power Lines Communication and Control Links
CES
CES is Operated as a Fleet offering a Multi-MW, Multi-hour Storage
14
CES – A Virtual Substation BatteryCES – A Virtual Substation Battery
Communication & Control Layout for
CES
Utility Dispatch Center /SCADA CES Control Hub
Substation
Power Lines Communication and Control Links
Integration Platform
CES CESCESCES
CES is Operated as a Fleet offering a Multi-MW, Multi-hour Storage
Grid Benefits:4) Load Leveling at substation
5) Power Factor Correction
6) Ancillary services
Local Benefits:1) Backup Power
2) Renewable Integration
3) Voltage correction
15
• CES: 2MW/2MWh; Fleet of 80 25-kW Units
• Circuit: Morse Rd 5801; 13 kV, 6.3 MVA Peak Load, 1742 customers
• Coverage: Approximately 20% of customers
• Schedule: Mar 2011 Prototype Testing Dec 2011 2MW Deployment
• Status: Mar 2011 – 2 Prototypes being tested at AEP’s Dolan Technology Center.
No
rth
CES: AEP Ohio gridSMARTCES: AEP Ohio gridSMARTSMSM Demonstration Demonstration
Morse Rd 5801
16
Prototype testing at Dolan Technology CenterPrototype testing at Dolan Technology Center
17
Mock installation at AEP’s Dolan Technology Center
Battery Sleeve
Battery Case
Mock installation at AEP’s Dolan Technology CenterMock installation at AEP’s Dolan Technology Center
CES UnitCES Unit
Simulated Image from S&C Electric Company
Ground Level
18
CES – NE Columbus Project Benefits.CES – NE Columbus Project Benefits.
19
Morning Noon EveningMidnight
Trigger Level for Discharge
Trigger Level for Charge
CircuitFeeder’s charge and discharge needs are assessed periodically and divided among
CES Units on the circuitfeeder
Feeder Load
CES
# 1
CES
# 2
CES
# 3
Feeder level demand profile showing CES Unit charge and discharge
Load Leveling – Spread Across the CES FleetLoad Leveling – Spread Across the CES Fleet
20
Sustainable Future DeploymentsSustainable Future Deployments
Three Tiers for
Sustainable Energy
Storage
Deployments
TECHNOLOGYTECHNOLOGY
Validate energy storage technology can meet grid
requirements
Credible financial benefit to customers
Ensure favorable rate recovery treatment
BUSINESS PLANBUSINESS PLAN REGULATORYREGULATORY
21
ConclusionConclusion
• Successful deployment of Energy Storage Systems
• AEP’s current Energy Storage strategy is focused primarily on Community Energy Storage.
• Energy Storage System Cost must reduce significantly to become economically justifiable for utility deployment.
• Market predictions indicate that near-term costs for energy storage may broaden deployment opportunities.