Transcript Document 7455161

Transmission Construction
Clearance Optimization
June 25, 2010
Tod Whitley & Jen Fiegel
ERCOT
Reliability Operations
Subcommittee Meeting
Oncor Electric Delivery Company LLC
What’s Inside / Coming Attractions
Planning Phase
Design Phase
Execution Phase
Q&A
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Planning Phase
Engineering design for minimizing future clearance / outage
Two construction seasons (clearance driven)
Pre-engineering meeting
Access plan / ROW
Unit pricing versus time & material
Environmental
 Endangered species
 USACE property permitting / remediation approval
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Design Phase
Create work sequence drawings
 Mobile bypass / line bypass
 Coordinate with Distribution for load transfer options
 Continuous vs daily clearance
 Identify work that can be done without equipment clearance
 Coordinate Oncor / Contractor work under same clearance. Ex: line rebuild, terminal upgrade
 Coordinate with City / Municipality events director
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Conversion of Station G to 138kV operation
WA#XXXXXXXX
 Convert Station G from 69kV to 138kV operation
 Relocate existing GT from 69kV P-G line
 Construct new GT on the 138kV P-G line
 Build 1 mile of new 138kV line
 Coordinate conversion of Coop Sta SS from 69kV to
138kV operation
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
April 1, 2010
Green – De-energized
Initial configuration after Coop
has completed new feeder out
of Station W
Red – New
Blue - Remove
Tie to
Station W
Tie to
Station SS
(Final configuration is on the
last page)
Coop
XXXX
Station G
XXX
Tie to
Station G
XXXX XXXX
69kV
Removable
jumper TJ-XXX
Station SST
Station SS
(Coop)
Station S
AS
XXX
Station GE
(Other)
Station GAT
N.O.
XXX
GT
AS XXX
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O. AS
XXX
AS xxx
AS XXX
xxx
xxx
xxx
138kV
Station WBSE
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
Green – De-energized
Red – New
Tie to
Station W
Tie to
Station SS
September 7-27
Begin setting tangent poles in
green field area
Blue - Remove
Coop
XXXX
Station G
XXX
Tie to
Station G
TJ-XXX
XXXX XXXX
69kV
Station SST
Station SS
(Coop)
Station S
AS
XXX
Station GE
(Other)
Station GAT
GT
AS XXX
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O.
AS xxx
AS xxx
AS xxx
xxx
xxx
138kV
Station WBSE
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
Green – De-energized
Red – New
Tie to
Station W
Tie to
Station SS
April 20 (morning)
•De-energize feed to Sta G
and Sta SS for 2 hours
Blue - Remove
Coop
xxxx
•Set anchor bolt cage for
anchor bolted foundation for
structure 1/10
Station G
•Place 69kV tap back in
service after cage has been
set
xxx
Tie to
Station G
xxxx
69kV
TJ-xxx
xxxx
Station SST
Station SS
(Coop)
Station S
1/10
Station GE
(Other)
Station GAT
AS
xxx
GT
AS xxx
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O.
AS xxx
AS xxx
AS xxx
xxx
xxx
138kV
Station WBSE
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
Green – De-energized
Red – New
Tie to
Station W
Tie to
Station SS
September 27-30 (4 days)
•Line clearance on 138kV to
install anchor bolt foundations
for new switch structure
Blue - Remove
Coop
xxxx
•Set three pole dead-end
Station G
xxx
Tie to
Station G
xxxx
69kV
TJ-xxx
xxxx
Station SST
Station SS
(Coop)
Station S
AS
xxx
1/10
Station GE
(Other)
Station GAT
GT
AS xxx
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O.
AS xxx
AS xxx
AS xxx
xxx
xxx
138kV
Station WBSE
Rev 10
LDS
xxxx
3/30/10Electric Delivery Company LLC
Oncor
LD
LDS
xxxx Sta SLM xxxx
New switch structure
foundation
Three pole dead-end
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
November 3 (morning)
Green – De-energized
•Transfer all load at Sta G to Sta Sta
WBSE
Red – New
•Coop to transfer all load off of Sta G
and Sta SS
Blue - Remove
Tie to
Station W
Tie to
Station SS
Coop
xxxx
•Take 69kV line clearance to remove
TJ-xxx
•Remove high side jumper at Sta S
(permanent)
Station G
•Remove and decommission AS xxx
at Sta G (permanent)
Remove and
decommission
AS xxx
•Asset Commission and NOMCR
Tie to
Station G
xxxx
69kV
xxx
Remove
temporary
jumper TJ-xxx
xxxx
Station SST
Station SS
(Coop)
Station S
AS
xxx
Station GE
(Other)
Station GAT
GT
AS xxx
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O.
AS xxx
AS xxx
AS xxx
xxx
xxx
138kV
Station WBSE
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
Green – De-energized
Red – New
Tie to
Station W
Tie to
Station SS
November 3 (afternoon)
•Place 69kV line back in
service with Sta G isolated for
conversion work to begin.
Blue - Remove
Coop
xxxx
Station G
Tie to
Station G
xxxx
69kV
Temporary
Jumper TJ-xxx
(removed)
xxxx
Station SST
Station SS
(Coop)
Station GE
(Other)
Station GAT
GT
AS xxx
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O.
AS xxx
AS xxx
AS xxx
xxx
xxx
138kV
Station WBSE
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
Green – De-energized
Red – New
Tie to
Station W
Tie to
Station SS
November 8-11 (4 days)
•Line clearance on 138kV to
install switch structure and
switches.
Blue - Remove
Coop
xxxx
•Put 138kV line normal
•Asset Commission and
NOMCR
Station G
Tie to
Station G
xxxx
69kV
TJ-xxx
xxxx
Station SST
Station SS
(Coop)
Station GE
(Other)
Station GAT
GT
AS xxx
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
N.O.
AS xxx
AS xxx
138kV
Station WBSE
LDS
xxxx
AS xxx
LS
xxxx
xxx
LS
xxxx
N.O.LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
xxx
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
November 12-17 (6 days)
Green – De-energized
•Take 69kV line clearance to
set 1/9, 1/10, 2/1, set new
wood H-frame, pull rope, pull
conductor, replace TJ-xxx
Red – New
Blue - Remove
Tie to
Station W
Tie to
Station SS
Coop
xxxx
•Remove existing 69kV
switches at existing tap
•Remove wood structures at
existing tap
Station G
•Complete the demolition Sta
S
Tie to
Station G
FID
xxx
•Asset Commission and
NOMCR
xxxx
138kV
Replace
TJ-xxx
xxxx
Station SST
Station SS
(Coop)
Station GE
(Other)
Station GAT
GT
AS xxx
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
138kV
Station WBSE
LDS
xxxx
AS xxx
N.O.
AS xxx
AS xxx
LS
xxxx
xxx
LS
xxxx
N.O.
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
xxx
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Black – Energized
November 17, 2010
Green – De-energized
Final configuration after tap
has been relocated and
converted to 138kV operation
Red – New
Tie to
Station W
Tie to
Station SS
Blue - Remove
Coop
xxxx
Station G
FID
xxx
Tie to
Station G
xxxx
138kV
xxxx
Station SST
Station SS
(Coop)
Station GE
(Other)
Station GAT
N.O.
xxx
Sta P
69kV
Station W
(Coop)
AS
xxx
LDB
xxx
xxx
AS xxx
138kV
Station WBSE
LDS
xxxx
LS
xxxx
xxx
LS
xxxx
GT (138kV) N.O.
LDS
xxxx
LD
LDS
xxxx Sta SLM xxxx
Rev 10
3/30/10Electric Delivery Company LLC
Oncor
xxx
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Design Phase
Nodal Market / Network Operations Model Change Request (NOMCR)
 Pared down version of work sequence submitted
Clearance Requests
 Submission of data for ERCOT model
 Clearance request (Transmission Outage Application)
– Clearance Coordinators do the following:
• Access ERCOT Outage Scheduler (Generator schedules)
• Access ERCOT Outage Scheduler for other Transmission Service Providers’
schedules
• Contact TSP’s directly to discuss clearances in detail
• Check 90 day weather forecast
• Check load forecast
• Request Load flow studies
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Design Phase
Permitting requirements
 TXDOT, NTTA, etc.
 Railroads
 Utilities
 City
 FAA
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Transmission Outage Application (TOA)
Oncor Electric Delivery Company LLC
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Oncor Electric Delivery Company LLC
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Execution Phase
Pre-construction meetings
On-site Field Construction Coordinator
Material availability monitoring
Phasing diagrams
Night work
Manpower amplification
Weather conditions (helicopters / bulldozers, skids, mats)
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Summary
 Engineering Design / Constructability
 Permitting
 Detailed work sequence drawings
 ID work not requiring a clearance
 Coordination of work under one clearance
 Access ERCOT Outage Scheduler (Generator schedules)
 Access ERCOT Outage Scheduler for other Transmission
Service Providers’ schedules
 Contact TSP’s directly to discuss clearances in detail
 Check 90 day weather forecast




Check load forecast
Request Load flow studies
Material monitoring
Manpower
 Weather condition mitigation methods
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Special Considerations For CREZ Projects
 CREZ Program Management Office to
manage projects through the completion
 Transmission Service Providers
coordination of routes, substation
termination and system protection
–Coordinate schedules including
clearances
 Schedules including Planned Outage
Schedules published on PUC Webtool
–Monthly monitoring of project schedule
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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Q&A
Oncor Electric Delivery Company LLC
Tod Whitley & Jen Fiegel ERCOT ROS Presentation 06/25/2010
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