Entergy%20Gulf%20States,%20Inc.%20(Texas)%20%20Proposed%20Transmission%20Reliability%20Projects

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Entergy Gulf States, Inc.(Texas)Proposed
Transmission Reliability Projects

• Entergy Transmission Planning Summit
• New Orleans, LA
• July 31, 2007

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2007 EGSI-TX Completed Transmission Projects

• Grimes 345/138 kV Substation Reconfiguration

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2007 EGSI-TX Completed Transmission Projects

• Hanks and Kolbs 230 kV Upgrades

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2007-08 EGSI-TX Proposed Transmission Reliability
Projects
69kV Calvert Expand Cap Bank
Replace Fawil 138/69 kV Autotransformer
Calvert
Fawil
Cow Orange
Helbig West End
S. Beaumont, Dupont Pt. Neches
EGSI-TX Underrated Breaker Replacement
69kV Blue Water Add Cap Bank
Blue Water
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EGSI-TX Breaker Upgrades

• Scenario
• Based on asymmetrical fault current analysis,
  various circuit breakers have been identified as
  underrated.
• Recommended Solution
• Replace the identified underrated circuit
  breakers with appropriately sized breakers.
• 2007
• Cow 69kV 5515, 5510
• Orange 69kV 3165, 3145
• 2008
• Orange 69kV 3365
• South Beaumont 69kV 3700
• Port Neches 138kV 3345
• 2009
• Dupont Bulk 69kV 3255, 3260
• Helbig 69kV 5585
• Orange 69kV 3370
• Estimated cost 2.7 MM

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EGSI-TX 69kV Voltage Support

• Calvert 69kV Substation
• Loss of 69kV Line 159 (Bryan APL Hearne) causes
  undervoltages at Calvert 69kV Substation.
• Expand existing capacitor bank to 12MVAr
• Proposed In-Service Date 2008
• Approximate Cost 600 k
• Blue Water 69kV Substation
• Multiple contingencies cause undervoltages on
  69kV Line 175 Beach Line.
• Install 11MVAr capacitor bank
• Proposed In-Service Date 2008
• Estimated Cost 500 k

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EGSI-TX 69kV Voltage Support
EXPAND EXISTING CAP BANK
INSTALL 11MVAR CAP BANK
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Fawil Replace 138/69 kV Autotransformer

• Scenario
• Contingency events along 69 kV Line 81
  (Fawil-Deweyville-Echo) cause loads on Line 81 to
  be served radially through the Fawil 138/69 kV
  autotransformer, resulting in overloads on the
  transformer during peak load conditions. The
  transformer is currently rated at 20 MVA.
• Recommended Solution
• Replace the autotransformer with a system spare
  138/69 kV, 45 MVA unit, located at Meaux
  substation in Louisiana.
• Proposed In-Service Date 2008
• Estimated Cost 350 k

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Fawil Replace 138/69 kV Autotransformer
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2009-10 EGSI-TX Proposed Transmission Reliability
Projects
Cedar Hill
Porter
138kV Line 823/886 Upgrade
S. Beaumont
69kV Beaumont Upgrades Yankee Doodle, 69kV Line
876 Line 98
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69 kV Beaumont Network Upgrades

• Scenario
• In the 69kV Beaumont area there exists several
  single contingency thermal overloads including
• 69kV Line 581 (Helbig Rosedale)
• 69kV Line 468 (Elizabeth Gallier)
• 230/69kV Helbig Autotransformers
• 69kV Bus Tie Breakers (Helbig Amelia)
• Recommended Solution
• Add line breakers at Yankee Doodle 69kV
  Substation.
• Close normally open points at Lincoln and
  Crockett 69kV Substations.
• Rebuild 69kV Line 576 (Lincoln South Beaumont)
  69kV Line 98/190 (Dupont Beaumont South
  Beaumont) to 106MVA capacity.
• Approximately 5.5 miles of 69kV transmission
  lines
• Proposed In-Service Date 2009
• Estimated Cost 8 MM

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69 kV Beaumont Network Upgrades
CROCKETT
CLOSE N.O. BREAKER
CLOSE N.O. SWITCH
YANKEE DOODLE
L-155
VIRGINIA
LINCOLN
L-458
CARDINAL
ADD LINE BREAKERS
UPGRADE LINE 576
L-458
UPGRADE LINE 190
LAMAR
CDT
NITRO
DUPONT BEAUMONT
SOUTH BEAUMONT BULK
UPGRADE LINE 98
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138 kV Line 823/886(Porter Tamina Cedar
Hill) Upgrade

• Scenario
• 138 kV Line 823/886 (Porter Tamina - Cedar
  Hill) is one of the primary sources into the
  Montgomery County load pocket.
• The single contingency loss of 138 kV Line 582
  (Oak Ridge - Porter) causes 6.3 thermal
  overloads on 138 kV Line 823/886 (Porter to Cedar
  Hill).
• Recommended Solution
• Re-conductor approximately 6 miles of 138kV Line
  886 (Tamina Cedar Hill) to 531 MVA capacity.
• Upgrade station equipment at Tamina to bring
  rating of Line 823 Porter-Tamina up to 531 MVA
  capacity.
• Proposed In-Service Date 2009
• Estimated Cost 7.4 MM

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138kV Line 823/886(Porter Tamina Cedar Hill)
Upgrade
UPGRADE TO 531MVA CAPACITY
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2011-12 EGSI-TX Proposed Transmission Reliability
Projects
Western Region Reliability Improvement Plan -
Phase 3A
Rivtrin
Quarry
Huntsville
Grimes
Cypress
Lewis Creek
Jacinto
Hartburg
Inland Orange
Western Region Reliability Improvement Plan -
Phase 3
230kV Line 195 Upgrade
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Western Region ReliabilityImprovement Plan

• Phase 3
• Convert 138 kV Lines 524/824 (Jacinto-Lewis
  Creek) to 230 kV operation.
• Construct a 230 kV transmission line from Cypress
  to Jacinto.
• Install static and dynamic VAR support in the
  Western Region.
• Projected In-Service Date 2011
• Phase 3A (Alternative to Phase 3)
• Construct new Quarry 345 kV Substation on Line
  119.
• Construct a new 345 kV transmission line from
  Quarry to Rivtrin.
• Upgrade 138 kV transmission Line 485 (Grimes to
  Huntsville).
• Additional firm network resources
• Projected In-Service Date 2011
• Phase 4 (Projected ISD 2013)
• Build new 230 kV line from Porter to Lewis Creek.

Note This set of projects may be modified
based on further activities and developments
occurring at the Louisiana and Texas Commissions.
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Western Region Reliability Improvement Plan
Phase 3
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Western Region Reliability Improvement Plan -
Phase 3A

• Projects identified in Phases 3 and 4 of the
  WRRIP result in greater reliance on and
  strengthening of the transmission corridor
  between the Western Region and the Beaumont area.
• Because of recent events such as the isolation of
  the Western Region from the rest of the Entergy
  System, the Company has developed Phase 3A, which
  would strengthen the Western Regions ties to
  the west.

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230 kV Line 195 (Hartburg-Inland Orange) Upgrade

• Scenario
• 230 kV Line 195 (Hartburg Inland Orange) is one
  of the primary sources into the Beaumont/Port
  Arthur area.
• The single contingency loss of 500 kV Line 547
  (Cypress Hartburg) causes thermal overloads on
  Line 195.
• Recommended Solution
• Re-conductor approximately 4 miles of 230kV Line
  195 (Hartburg Inland Orange) to 1042 MVA
  capacity.
• Projected In-Service Date 2012

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230 kV Line 195 (Hartburg-Inland Orange) Upgrade
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Long Term Reliability Target Areas (2013 2017)

• The following transmission lines experience
  thermal overloads for various contingencies in
  the 2013 - 2017 time frame.
• 230 kV Line 496 (China Sabine)
• For the loss of Line 599 (China Amelia)
• 138 kV Line 88 (Dayton Cheek)
• For the loss of Line 496 (China Sabine)
• 138 kV Line 571 (Jacinto Porter)
• For the loss of Line 822 (China Porter)
• 138 kV Line 150 (Dayton Long John)
• For the loss of Line 579 (Jacinto Cleveland)
• 138 kV Line 561 (Gulfrich Crown Orange)
• For the loss of Line 590 (Gulfrich Ausimont)
• 138 kV Line 582 (Oak Ridge Porter)
• For the loss of Line 886 (Tamina Porter)
• 138 kV Line 86 (Dayton Eastgate)
• For the loss of Line 882 (China Porter)
• 138 kV Line 515 (Sabine Port Neches)
• For the loss of Line 516 (Sabine Port Neches)
• 138 kV Line 516 (Sabine Port Neches)
• For the loss of Line 515 (Sabine Port Neches)

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Long Term Reliability Target Areas (2013 2017)
230 kV Line 195 (Helbig Inland Orange)
138 kV Line 150 (Dayton New Long John)
230 kV Lines 515 516 (Sabine Port Neches)
138 kV Line 86 (Dayton - Eastgate)
230 kV Line 496 (China Sabine)
138 kV Line 88 (Dayton - Cheek)
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Long Term Reliability Target Areas (2013 2017)
Lacon 138 kV Substation
138 kV Line 571 (Jacinto - Porter)
138 kV Line 582 (Porter Oak Ridge)