IEEE-PES-ICC-Fall-2022-Presentation complete

NEETRAC - IEEE-PES-ICC-Fall-2022-Presentation complete

1. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
From A to Z –Methods, Experiences, and Lessons Learned
from the Installation of a Critical MV Power Cable System –
Sub F
JC Hernandez-Mejia – GT NEETRAC – [email protected]
Stacy Elledge – GT NEETRAC – [email protected]
Joshua Perkel – EPRI – [email protected]
Nigel Hampton – UL – [email protected]
Sept. 30
th
to Nov. 2
th
, 2022 – Orlando, FL

2. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
2
Outline
• Background
• Critical Circuits
• From A to Z Methods –Highest Reliability & Case Study
–Factory Acceptance Test – FAT
–Site Acceptance Test – SAT
–Site Overview
–Installation Acceptance Test - IAT
–Takeaways
–Other important steps
• Summary

3. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Background
• Utilitiesrecognizethe value ofcommissioningand
condition-based asset management of their distribution
cable circuits
• There isready availability of voltage sources and well-
established condition assessment criteria toundertake the
condition-based maintenance
• IEEE-PES-ICC Spring 2022 –Sub F –“Considerations
when Managing Critical MV Cable Circuits”

4. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Critical Circuits
• The definition would likely change from utility to utility
• Specific cases may require unique parameters
• Circuits are considered crit ical when the risk and consequences of a
failure severely impact the users, system, and/or third parties
• Drivers might include:
–Critical infrastructure
–Impact to the end customer
–SAIFI and SAIDI
–Circuit Access (Location/Parts)
• Performance requirements remain constant across utilities
perspectives, i.e. highest possible reliability
• To ensure the highest possible reliability, methods from cable design
to manufacturing and installation are required
Case study presented here

5. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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From A to Z Methods –Highest Possible Reliability Q: How to get highest reliability?
A: By been involved from the beginning to end –A to Z
The A to Z process:
Utility
Need
Cable Manufacture
Accessory Selection
Handling
System
Design
Installation
Cable
Joints
Terms
Reliable
Service
Life
Critical
Circuit
AZ
Diagnostic
Intervention
FAT IAT MTSAT
Diverse/Complimentary
Set of Diagnostic
Technologies
FAT: Factory Acceptance Test
SAT: Site Acceptance Test
IAT: Installation Acceptance Test
MT: Maintenance Test
Utility

6. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Critical Circuit –Case Study
• Feeder Type
• Three-Phase
• Bay Crossing
• One Spare
• 8 Reels (6,000 ft)
• 4 Joints
• 8 Terminations
• 2 cables installed
at the time
On-site Cable System Geographical Layout
Cable Lay
Cable Lay

7. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Factory Acceptance Testing –FAT
• Witness electrical routine
test / review quality records
for each reel by experienced
representative on behalf of
the end user
• FAT conducted in addition to
standard Routine Test
• Consider augmenting
standard test frequencies for
critical cases
Case Study

8. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Site Acceptance Test -SAT
Ensure that the cable did not
suffer any damage during
handling and transportation
• Visual Inspection
•TDR
• VLF Tan δ
• PD with DAC
• PD VLF Monitored Withstand
New cables were OK after factory
handling and transportation

9. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Site Overview (1 of 3)

10. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Site Overview (2 of 3)

11. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Site Overview (3 of 3)

12. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test (IAT) -Stages
Near End
Stage 0 – First half of cable installed
Sea Bed
Reels
Barge
Cables
Far End

13. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test (IAT) -Stages
Near End
Stage 1 – Jointing on barge
Sea Bed
Joints
Far End

14. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test (IAT) -Stages
Near End
Stage 2 – Joints buried in seabed
Sea Bed
Far End

15. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test (IAT) -Stages
Near End
Stage 3 – Installation complete
Far End
Seabed

16. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test -Stage 1
Test
Sequence
Test Test Voltages
Applicable
Standards
1TDR N/A IEEE 400
2PD with DAC
0.5 U
0
, U
0
, 1.5 U
0
, 
1.7 U
0
IEEE 400.4
3MWT PD with VLF30 min IEEE 400.2
4PD with DAC
0.5 U
0
, U
0
, 1.5 U
0
, 
1.7 U
0
IEEE 400.4
Stage 1 - Joint Acceptance:
•Completed half crossing
•Joint assembly on barge
•Test terminations

17. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test -Stage 2
Test
Sequence
Test Test Voltages
Applicable
Standards
1TDR N/A IEEE 400
2PD with DAC
0.5 U
0
, U
0
, 1.5 U
0
, 
1.7 U
0
IEEE 400.4
3MWT PD with VLF60 minIEEE 400.2
Stage 2 - Joint Submergence:
•Completed half crossing
•Joint assembly laid on seabed
•Test terminations

18. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Installation Acceptance Test -Stage 3
Test
Sequence
Test Test Voltages
Applicable
Standards
1TDR N/A IEEE 400
2PD with DAC
0.5 U
0
, U
0
, 1.5 U
0
, 
1.7 U
0
IEEE 400.4
3VLF Tan δ 0.5 U
0
, U
0
, 1.5 U
0
IEEE 400.2
4MWT PD with VLF 30 min IEEE 400.2
Stage 3 - Final Commissioning:
Completed full crossing
Joint assembly buried
Final pre-molded terminations

19. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Feeder
Phase
Stage 1
Joint
Acceptance
Stage 2
Joint
Submergence
Stage 3
Final
Commissioning
Cable 1√ joint mechanical damage Abandoned
§: Needed because Cable 1 was Abandoned
Summary of Test Results by IAT Stage

20. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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TDR for Cable 1 (Abandoned)
After Trenching
On Barge

21. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Summary of Test Results by IAT Stage
Feeder
Phase
Stage 1
Joint
Acceptance
Stage 2
Joint
Submergence
Stage 3
Final
Commissioning
Cable 1√ joint mechanical damage Abandoned
Cable 2
Red Phase
√
√√
Rejoint
§
PD at Joint – replaced
√
Cable 3
Spare Phase
PD at Joint – replaced
√√
√
§: Needed because Cable 1 was Abandoned

22. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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IAT DAC PD Location Tests Results
Cable 2 (Red Phase)

23. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Cable 2 (Red Phase) Joint Dissection
Insulation Shield Cutback Defects

24. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Summary of Test Results by IAT Stage
Feeder
Phase
Stage 1
Joint
Acceptance
Stage 2
Joint
Submergence
Stage 3
Final
Commissioning
Cable 1√ joint mechanical damage Abandoned
Cable 2
Red Phase
√
√√
Rejoint
§
PD at Joint – replaced
√
Cable 3
Spare Phase
PD at Joint – replaced
√√
√
Cable 4
Blue Phase
√√√
Cable 5
White Phase
√√√
§: Needed because Cable 1 was Abandoned

25. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
Other Important Steps

26. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Cable Quality Assurance
• Perform QA checks on all shipping reels to ensure each
reel meets design specifications
• Ensure at least spare reels are available should issues
arise

27. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Manufacturer Selection / Qualification to Bid
• Require qualification reports
• Require monthly CV qualification reports > 12 months
• Review experience of production of the design being
purchased –has this design been manufactured before?
• Manufacturer may be audited considering quality and
technical parameters
• Remember that a factory visit is nota full audit

28. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Cable Design –Case Study
• EPR was the utility choice
• Only MV production plants can be used
• Limits the length to approximately 6,000 ft
• Jointing is required during the crossing
• Water blocked, fully encapsulation, and no armor

29. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Accessory Selection
• Use only qualified joint designs (IEEE 404)
• Request qualification reports
• Use only qualified connectors –consider own experience
• Stick with joint designs and installation practices that utili ty
crews are most familiar with

30. IEEE PES ICC Fall 2022: From A to Z – Methods, Experiences, and Lessons Learned from the Installation of a Critical M V Power Cable System – Sub F
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Summary
• Successfully conducted subsea commissioning program
• Commissioning integrated with the installation
• Designed to detect manufacturing and installation issues as
soon as practical avoiding risk
• Multiple and complimentary diagnostic tests / technologies to
improve accuracy
• Reduced repair/replacement costs
• The methods and processes can be used as guidance for
other critical circuit applications