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Utility vs. Military Microgrids for the UIUC Power Affiliates Program Annual Review Meeting May 11, 2007. Roch Ducey U.S. Army Engineer R&D Center - CERL . Motivation. Aging distribution and transmission systems to military bases
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Utility vs. Military Microgridsfor theUIUC Power Affiliates Program Annual Review MeetingMay 11, 2007 Roch Ducey U.S. Army Engineer R&D Center - CERL
Motivation • Aging distribution and transmission systems to military bases • Current contingency – critical building dedicated engine/generators • Low reliability • No flexibility/adaptability • Impact • Reduced mission readiness • Reduced reaction time • Reduced sustainability • Reduced security
Motivation • Army Energy Strategy • Increase renewable energy • Decreasing dependence on fossil fuels. • Considering photovoltaics, wind, biomass, and fuel cells using a Distributed Energy Resource (DER) approach. • Technical Barriers (DER) • Stability • Response • Lack of current design methods
Utility MicroGrid Development • Consortium for Electric Reliability Technology Solutions (CERTS) • Consortium includes four labs (Lawrence Berkeley, Oak Ridge, Sandia, Pacific Northwest), Power Systems Engineering Research Center (consortium of universities led by Cornell), American Electric Power (AEP), and Electric Power Group • Enhance the value of DER • Customer benefits include: bill savings, price certainty, reliability • Societal benefits include: resilient local energy infrastructure, • Critical technical and system cost issues • Transition to/from islanded operation • Local voltage regulation • Rapid load-sharing and frequency control • Protection
4-Wire 480 V Energy Manager Zone-3 Zone-4 P-1 P-2 Feeder A B-3 B-4 Zone-2 4-Wire 480 V Sensitive Loads Zone-1 3-Wire 480 V PCC P-3 Zone-5 Feeder B B-5 13.8 kV 4-Wire 480 V Feeder C Zone-6 Traditional Loads Micro- Power Flow Point of Breaker source Controller Common Coupling CERTS Microgrid Test BedWalnut Test Facility (Columbus Ohio ) 1. Protection, including Static Switch Internal, grid side & IEEE 1547 events 2. Load Flow Control Unit Power, Zone flow & Mixed 3. Grid-to-Island-to-Grid Power vs. freq power balance; Re-closing of the Static Switch using local information
CERTS Microgrid Test BedWalnut Test Facility (Columbus Ohio ) Thermal dump from heat recovery equipment Container for the 3 TECOGEN units Area for various test equipment, relays, data acquisition, simulated loads, etc.
Military Microgrid Test Bed • Strategic Environmental Research & Development Program (SERDP) • Candidate Site: Ft. Sill, Oklahoma (Lawton, OK)
Initial Entry Training (IET) AreaFort Sill Field Artillery Training Center The IET Area is located on the east side of Interstate 44
The site can be easily isolated from the rest of the Fort Sill distribution grid, by considering the sectioning switches for the purple and yellow 13.2-kV feeder lines as points of common coupling (PCCs) “Starship” Barracks and Training Facilities Wastewater Treatment Plant Radar Facility
Most of the same facilities as the rest ofFort Sill and other Army Posts • HQ Office • “Starship” Barracks and Training Facility • Medical/Dental Clinic • Fire Station • Natural Gas Pipeline • Mini-Substation • Radar Facility • NCO Club • Post Exchange
Technical Challenges • Robust Network Topology Dynamics • Dynamic Response of Distributed Control Strategies • Control Agent Role • Network Interoperability, Compatibility, and Testability • Deployment Application Network Modeling • Options for Mobility and Stationary Deployment Network Strategies
Payoffs • Energy provided to the power grid by the DERs and energy storage equipment is used optimally to meet requirements based on environmental, operational, and/or economic decision criteria • Significant reduction in fossil fuel consumption and associated air pollution emissions • Self-healing and reconfigurable power grid topology • Look ahead heterogeneous source dispatching • Mission-based adaptive load-shedding • Responsive to dynamic changes in mission
Links CERTS - http://certsmicrogrid.com/ • http://owww.cecer.army.mil/techreports/ERDC-CERL_TR-06-35/ERDC-CERL_TR-06-35.pdf • Ft. Sill Utility – http://www.psoklahoma.com/about/