Transcript AASHE Partnership for Net Zero: CSU’s Collaboration in

Fort Collins Utilities / Spirae
RDSI Microgrid Demonstration Project
CREA Energy Innovations Summit
October 28, 2013
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Community Profile
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53 sq miles
Population: 131,000
Median age 29.4 yrs.
48.2% 4+ yrs. of college
280 m of bike trails
300 days of sunshine
Fort Collins Utility:
– 62,000 homes and businesses
– Nearly all underground system
Background – DoE RDSI Project
• DOE awarded $6.3M; local entities contributed $5.1M.
• City of Fort Collins is project lead.
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Main Goals:
 Demonstrate
coordinated
system of mixed
Distributed Energy
Resources
 Intentional islanding
 Reduce peak load by
>20% - 30% (>3.5 MW)
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FortZED/RDSI Project Sites and
Resources
Project Total
- 4,010 kW Generation
- 760 kW Load Shed
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2011 Demonstration Summary
Smart Grid: RDSI
14% reduction across 2 feeders
(~2.3 MW) & 25% reduction
across 1 feeder (~2.0 MW)
Maximum Generation: 1,950 kW
Dispatchable: gensets
Non-dispatchable: PV, steam
plant generator
Maximum Load Shed: 550 kW
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2012 RDSI Phase 2: Microgrid
Demonstration Project
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Microgrid Scoping and Member Facility
Selection
Criteria
•Include multiple facilities and distinct Fort Collins
Utilities customers
•Use existing distribution system assets.
•All facilities must be located on a single feeder to
minimize complexity.
•Included a mix of distributed energy resources, but
have an anchor that can carry the whole load.
•Limit to RDSI Phase 1 partners that will accept risk.
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Microgrid Member Facilities
• CSU Engines and Energy Conversion Laboratory (EECL)
– 60-80kW Load
– 260 kW Generation (Natural Gas and Diesel)
• City of Fort Collins Northside Aztlan Recreation Center
– 70 kW Load
– 50 Kw Generation (PV)
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Distribution System Circuits and
Switches
Normal Configuration
•SCADA controlled 15 kV pad mount switch
provides a point of protection from
generation at the CSU Engines lab.
•CSU Engines Lab “building service” on
separate transformer fed from “grid side” of
the 15 kV protection switch.
•CSU Engines Lab Served by Circuit 772
(yellow lines)
•Aztlan Center Served by Circuit 738 (red
lines)
Reconfiguration for Requirements For
Microgrid
•Move Engines Lab building load and Atzlan
Center load from the “grid side” to the
“protected side of the 15 kV switch.
•Reconfigure 15 kV switch to enable resyncing of generation to the grid when
reclosing after islanding.
•Install data collection devices.
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Circuit Reconfiguration for Microgrid
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Installation of 3 phase
1/0 al tie between
switch point 56073
and 56185 on circuit
722.
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Reconfigure recloser
at switch point 56184
to 56185 by switching
circuit 722.
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Reconfigure feed to
EECL from switch
point 56073 to switch
point 56184 circuit
722.
4.
Switch Aztlan load
from circuit 738 to
circuit 722.
Normal Configuration
Changes for Microgrid
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Final Microgrid Configuration
Detail
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Overview
15 KV Switch Reconfiguration – Enable
Shared Control (Spirae / FCU SCADA)
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Relay interface for direct OPEN/CLOSE control from the Spirae BlueFin
control system.
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Switch OPEN/CLOSE status was provided to the BlueFin control system.
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Sync-check element added as a backup to the BlueFin sync software.
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Additional CTs were installed on cables connected at the 15 kV switch to
allow monitoring AMPS, KW, and KVAR at point of Utility connection by the
Spirae BlueFin control system.
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SCADA data was provided for AMPS, KW, and KVAR for the 480/277 volt
transformer serving the CSU Engines Lab from the FCU SCADA master
through Iconics tunneling software and secure VPN.
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Configuration and Test Schedule
 July 6 – G&W recloser remote control test
 July 8 – Configuration of protective relay settings
 July 13 – SEL parameter testing & relay verification
 July 19 – Island test of EECL
 Aug 6 – Microgrid test 1 -> Failure
 Sep 5 – Island test of EECL with new settings &
metering
 Sep 6 – Microgrid test 2 -> Partial success
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September 6th
5 min island test
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September 6th
25 min island test
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September 6th
PV Operation During Islanding
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October 14th
Aztlan Load Data
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Some Lessons Learned
 Standard distribution system assets can be reconfigured to
support microgrid operations with minimal expense.
 Detailed data is critical
– High resolution load profile and power quality
– Import / export across the point of common coupling
 Power quality management is critical
– Relax standards and settings for microgrids
– Improve management tools and strategies
 DER assets (solar inverters, etc…) should be configurable to
accommodate both normal and microgrid standards
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Thank You
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