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)