Midwest Energy Policy Conference

Transcription

1 BURNS & McDONNELL MICROGRID APPLICATIONS Presented to Midwest Energy Policy Conference October 2016

2 Microgrid Definition A microgrid is a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid [and can] connect and disconnect from the grid to enable it to operate in both grid-connected or island-mode. - the U.S. Department of Energy

3 Microgrid Definition A microgrid is a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid [and can] connect and disconnect from the grid to enable it to operate in both grid-connected or island-mode. - the U.S. Department of Energy

4 Common Features Decoupling of Generators from Loads Increased Redundancy of Generation Seamless Transitions to/from Utility

5 What Microgrids are Not Uninterruptible Power Supplies (UPS) Controls Only Solutions Sources of Revenue

6 Historical View of Microgrids Strictly for Customer Energy Reliability / Independence Heavily Dependent on Diesel Generation Bi-State Systems

7 Microgrid Evolution Microgrids Now Contain Assets which are Installed Primarily for Utility-Tied Operation No Energy Source is Out of Bounds Multiple Modes of Operation - Both Grid Tied and Islanded

8 Where We are Headed Microgrids Designed to be an IPP 99.99% of the Time with Customer Energy Security as a Secondary Requirement Utilities Adopting New Rate Structures and Capital Plans to Profit from Microgrid Capabilities Cyber Security is the Big Hurdle to Clear

9 Combined Heat & Power Traditional Critical Infrastructure Next Gen Critical Infrastructure Microgrid Markets Central Energy Plant Approach Focused on Highly Efficient Utility Tied Operation Common on University Campuses Central Power Plant Approach Only Operate in Absence of Utility Common at Data Centers and Hospitals Distributed Generation Approach Focused on Flexibility and Sustainability Quick to Embrace Emerging Technology

10 Example #1 Gainesville Regional Utilities & UF Shands Cancer Hospital

11 Overall Project New Medical Campus Focused on Treatment of Cancer Multiphase Construction Energy Services Outsourced as Design / Build / Own / Operate / Maintain

12 Energy Center One Line Generation Bus Utility (Typ.) Life Safety Bus Normal Utility Bus

13 Energy Center Benefits Fully Load Diesel Generators During Testing CHP Yields 80% Efficient Operation Hospital Achieved LEED Gold Certification Thanks to Energy Center

14 Example #2 Thermal Energy Corporation & Texas Medical Center

15 Texas Sized Capacities TECO Serves 18 Million Sq Ft of Space Within the 52 TMC Member Institutions 120,000 Ton Chilled Water Capacity (Provisions for 48,000 Tons in Future) 900,000 lb/hr Steam Generation 48MW CHP Turbine 16MW Diesel Backup

16 TECO Operation Operating in Deregulated Market Within ERCOT Bidding into Day Ahead Market Dynamically Changes Energy Mix Based on Market Conditions Thermal Storage Tank for Additional Flexibility

17 Thermal Energy Storage 8.8 Million Gallon Tank Thermal Capacity of 64kton-hr (~60MWh) Charge/Discharge at 16kgpm (~30MW) Provides Immediate Ride Through for Chilled Water Loss Allows TECO to Peak Shave & Participate in Arbitrage

18 Example #3 Smart Power Infrastructure Demonstration for Energy Reliability and Security

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20 SPIDERS Stakeholders US Secretary of Defense, USPACOM, DOE, USNORTHCOM, DHS 5 DOE National Labs USACE/ERDC-CERL, Philadelphia District, Omaha District Military Services Naval Facilities Engineering Command Local Utility Companies States of Hawaii & Colorado

21 SPIDERS Multiphase Approach TRANSITION Phase 1 PEARL-HICKAM CIRCUIT LVL DEMO Single, 15kV Distribution Circuit Two Critical Loads Renewable Power Island Phase 2 FT CARSON MICRO-GRID Three, 15kV Distribution Circuits Relatively Large PV Source Bi-Directional EV Charging Stations Phase 3 CAMP SMITH ENERGY ISLAND Entire Installation Smart Microgrid Distributed Renewables Blinkless Transfer of Buildings on Loss of Utility RoI-Focused Approach HIGHLY SENSITIVE CRITICAL LOADS UTILITY ANCILLARY SERVICES Template for DoDwide implementation New Uniform Facility Codes CONOPS TTPs Training Plans DSIA Certification Transition to Electric Utility Sector Transition Cyber- Security to Federal Sector and Utilities

22 Purpose of SPIDERS More Efficient Operation of Diesel Generators Supply critical load using fewer generators Online generators operate at more efficient point Ability to Integrate Renewable Resources REDUCE DIESEL FUEL CONSUMPTION Microgrid provides a grid source to allow UL compliant equipment to operate Power from renewables further reduces consumption of diesel fuel Increased Redundancy for Critical Systems Generators can serve any load in microgrid Implement Cyber Security for Microgrid Command and Control Microgrids must be less vulnerable than the utility grid to cyber attacks & Control network must be responsive to rapidly changing electrical system Minimize Changes to Existing Infrastructure In order to maximize effectiveness of SPIDERS program, it must be implemented at existing facilities not just new ones INCREASE RELIABILITY Utilizing existing infrastructure increases reliability and maintainability of systems

23 SPIDERS Phase I

24 Phase I Components Renewable Island DoD Owned Substation 15kV Feeder Distributed Microgrid Control System 1600kW Generator 800kW Generator Critical WWTP Loads

25 Power (kw) Fuel Consumption (gal/m) Phase I Performance Typical Microgrid Power and Fuel Consumption Fuel savings due to generator optimization PV Output WWTP Total Load Traditional Fuel Consumption SPIDERS Fuel Consumption Fuel savings due to PV integration 0 0.2

26 SPIDERS Phase II

27 SPIDERS Phase II Three Microgrid Diesel Generators (3MW total) 1MW PV Array Five Bi-Directional Hi-Speed Electric Vehicle Charging Stations (300kW / 400kWh total)

28 EV Charging Stations Five, 100kVA Stations Four Quadrant Control Permits VAR Support of Utility or Microgrid Even Without Vehicles Aggregator Allows Smart Charging of Fleet Based on Utility and Functional Requirements

29 Phase II Microgrid Distribu tion Line PV Arra y

30 SPIDERS Phase III

31 SPIDERS Phase III Microgrid to Support Entire Military Base EPA Tier 4i Generators Permit Economic Dispatch for Utility Ancillary Services Battery Storage for Blinkless Transfer to Microgrid for Critical Buildings on Utility Loss Distributed Solar Power

32 Microgrids Within Microgrids HECO #1 Microgrid #2 HECO #2 Microgrid #1 Microgrid #3

33 SPIDERS Successes Cyber-Secure Controls Stable Operation of Microgrid with 90% PV Penetration Bi-Directional Charging of Electric Vehicles in Grid-Tied and Islanded Operation Optimization of Distributed Generation Increased Reliability

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