Case Study for Building a Business Case for FLISR Based on Outage Prevention and Restoration Benefits
Don Bowman, Vice President of Engineering and Operations Wake Electric Co-Op
Vidya Vankayala, Director Grid Modernization Powertech Labs
Topics
About Powertech
FLISR Value Proposition and Industry Solutions
Simulation and Modeling of Benefits for Centralized FLISR
De-centralized FLISR - Wake Electric’s Experiences
Discussion
Powertech Labs Inc.Grid Modernization
• Utility telecom
• WiMax certification
• Aeromacs certification
• Public safety networks
Critical Infrastructure Communications
• Line devices
• Switchgear
• OMS, DMS, SCADA
• Device mgmt.
• NERC-CIP
Distribution Automation
• OpenADR Certification
• Industrial and commercial energy mgmt.
• Load shaping and DR
Grid Impact
• Asset inspection
• Telecom/DA Site assessment
• Meter troubleshooting
Mobile Apps for Field
FLISR Value Proposition
Fault Occurs
Feeder BackTo
Normal
CustomerReportsOutage
FieldCrews
On-SceneFault
Located
Crew Dispatch
and Travel Time
Fault Investigation
&Patrol Time
Time to Perform
Manual Switching Repair Time5 - 10 minutes 15 - 30 minutes 15 - 20 minutes 10 – 15 minutes
45-75 minutes
Power restored to customer on healthy
sections of feeder
Fault Occurs
Feeder BackTo
Normal
Outage Detected
Fault Location Marked for
Crew Dispatch
Fault Isolation Executed Via SCADA
Fault Location
Calculation
Fault Isolation
Calculation
Fault Restoration
Calculation Repair Time5 seconds 5 -10 seconds 5 -10 seconds 5 -10 seconds
Power restored to customer on healthy
sections of feeder
Time Line WITH FLISR Automatic Mode
45-60 seconds
FLISR Approaches
• Centralized• DMS/OMS at the control center
• SCADA-enabled devices
• Feeder section isolation and reclosing
• Control room identifies fault location based on automated calculation
• Control room guides/helps crew in isolation, restoration
• De-Centralized• SCADA-Enabled devices
• Faults detected by devices in the field and isolated
Business Case Benefits
Functional Monetary
• Improve reliability (CAIDI, SAIDI) • Regulatory incentives
• Improve customer perception of service • Defer asset investment
• Maintain license to operate • Increase energy revenue
• Improve field work(er) safety • Reduce customer cost of outage
• Increase field worker efficiency • Reduce fleet use (fuel, worker time and HQ dispatch)
• Reduce wind-shield time • Automation and repeatability of process
• Modernization • Reduce outage duration (minutes)
FLISR Test Bed
Test Bed
▪ 25 kV live line – Open Loop
▪ Outdoor, adjustable open-loop topology
▪ Multi-vendor recloser, FCI, FPI
▪ Multi-vendor telecom
▪ Load Banks: 2 x 1MW Resistive,
• 1 x 600 kVAR
▪ Expandable Voltage control, CX
• Grid-tiedRecloser ControllerLoad bank : 1 x 1000 kW1 x 600 kVAR
FCI Fault Indicator
FPI Fault Indicator
Test PulseCloser and controller
Load bank:1 x 1000 kW Recloser Controller
Customer Outage Duration Benefits
Fault location scenario Number of Customers without Service
Minutes of Cumulative Outage Duration
Outage DurationImprovement
Fault location With FLISRWithout
FLISRWith FLISR
Without FLISR
%
Section #1 430 2,306 92,450 495,790 81%
Section #2 1,394 1,876 299,710 403,340 26%
Section #3 482 482 103,630 103,630 0%
Section #4 926 2,972 199,090 638,980 69%
Section #5 2,046 2,046 439,890 439,890 0%
Overall 45%
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Service Restored By
FLISR
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Service Restored By
FLISR
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Service Restored By
FLISR
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Service Restored By
FLISR
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Feeder #1
Feeder #2
24.1 km926 customers
Section #4
11.3 km2046 customers
Section #5
10.4 km430 customers
Section #1
10.7 km1394 customers
Section #2 6.2 km482 customers
Section #3
Recloser #1 Recloser #3
Recloser #4 Recloser #5 Tie switch
Recloser #2
Service Restored By
FLISR
Useful Technology
Decentralized FLISR Solution
Conclusions
• De-Centralized FLISR (Don)
• Centralized FLISR (Vidya)