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Hybrid-Diesel Grids: Power Systems Integration Marc Mueller-Stoffels, PhD
Theory to Practice
Hybrid Energy Innovations 2015 Research funded in part by DOE EPSCoR
Alaska Center for Energy and Power ACEP's Mission: Develop and disseminate practical, cost-effective,
and innovative energy solutions for Alaska and beyond.
ACEP
Power Systems Integration
Program
PSI Laboratory
AK Hydrokinetic Energy Research
Center
Tanana River Testsite
Data Acquisition and
Management
Global Applications
Program Other Research
Geothermal Exploration
Biomass Applications
Integrated Research
Data Acquisition
System Analysis
R&D System Testing
System Implementation
Power Systems Assessments
• Theoretical work – Maximum RE
penetration vs. control architecture
• Applied models – Energy balance – Power quality – Optimal control
• Planning support – Resource sizing – Optimal operation
Example: Nome, AK
• Impact of 2 MW Geothermal Power on Wind-Diesel System – 2.7 MW Wind Farm – Gensets: 800 kW to 5.2
MW • Wind diversion vs. fuel
savings • Optimal control
– Minimize diesel switching, maximize RE utilization
Power Systems Integration Laboratory
Power Systems Integration Laboratory
Energy Storage Integration
• Flywheel Energy Storage Systems and Controls
• Integration of: – 200 kW Flywheel – ABB PCS100 – Hatch Control System
• Control of: – Power quality mitigation
strategies – Power smoothing
• Voltage source inverter – V/F-droop, isoch., virtual
generator
Hatch Engineering, Williams Hybrid Power/KTSi, ABB – State of Alaska funded
VRLA Battery Integration/Diesel-off
9
• Integration of ABB PCS100 with Absolyte VRLA battery
• Development: – Battery Management
System (ABB AC500) – Software controls
• Systems Testing: – Battery mapping – Diesel-off operation
Ambri Liquid Metal Battery
• ACEP/Ambri-partnership • Phase 1 (PSI Lab):
– Ambri Core: 17.5kW/35kWh – Battery performance testing – Preparation for PV-diesel
integration
• Phase 2 (Eagle, AK): – Ambri Energy Pod:
50kW/100kWh – Remote islanded PV-diesel
grid deployment – PV-smoothing and shifting
application
10
Ambri Inc., Alaska Power and Telephone – State of Alaska funded
Commercialization Center
• Mission: Support nascent industry/products from R&D to commercialization. Build AK-based export economy.
• Components: – Upfront engineering
support – R&D collaboration,
including lab use – Business planning,
investor and customer connections
Award under U.S. Economic Development Administration i6 Challenge
QUESTIONS?
Marc Mueller-Stoffels, PhD Alaska Center for Energy and Power University of Alaska Fairbanks mmuellerstoffels@alaska.edu (907) 474 5117
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