Entergy Louisiana, LLC (North) Proposed Transmission Reliability Projects

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Entergy Louisiana, LLC (North)Proposed
TransmissionReliability Projects
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ELL-North Transmission Reliability Projects
Northwest LA / South AR voltage support (Sarepta)
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NW Louisiana/South Arkansas Voltage Support Plan

• Scenario
• The following single contingencies will result in
  low voltages to occur in the southwestern corner
  of the EAI service territory
• Loss of the Magnolia East - McNeil line segment
• Loss of the Magnolia Steel - Magnolia East line
  segment
• Loss of the Magnolia Steel - Kerlin S.S. line
  segment
• Additionally the contingency outage of any of the
  following lines
• 115 kV line from Carroll to RingGold
• 115 kV line from Truss to Vienna
• 115 kV line from Vienna to MT. Olive
• 115 kV line from SpringHill to Taylor
• 115 kV line from Haynesville to Emerson
• 115 kV line from Danville to Jonesboro
• The low voltage concerns propagate into north
  Louisiana (Lucky substation).
• Capacitor bank additions alone do not provide
  sufficient improvement to this region.
• The transmission grid performance can be improved
  by providing a new EHV source to the area.
• Proposed Solution
• Build a new 345 - 115 kV station at Sarepta by
  tapping the El Dorado to Longwood 345kV line

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Emerson/ Sarepta Area
Emerson 21.6 MVAr Capacitor Bank
Sarepta Build 345 - 115kV substation Tap El
Dorado-Longwood line
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Cap Bank Installation
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Identified Target Areas 2012 and Beyond
Complete 230 kV loop around W. Monroe Area
Sterlington to Bastrop fix
Red Gum Area 115kV Voltage Improvement Plan
GramblingWinnfield Reenergize 230 kV Line
115kV System Improvement Around Delhi
Plantation Red Gum115 kV Line Trap Upgrades