Entergy Gulf States, Inc' Louisiana Proposed Transmission Reliability Projects

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Entergy Gulf States, Inc.(Louisiana)Proposed
TransmissionReliability Projects

• Entergy Transmission Planning Summit
• New Orleans, LA
• July 10, 2003

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2004 EGSI-LA Transmission Reliability Projects
McManus Capacitor Bank Addition
Harelson Substation 230/69kV Auto
Replacement Carryover 4-30-2004 ISD
Port Hudson 69 kV Breaker Replacement
Coly-Hammond Build 230kV line 2006 ISD .
Chlomal-Jennings Line 13 Upgrade
Willow Glen Breaker Replacement Program 5 230
kV breakers
Port Hudson-Crown Zellerbach Line upgrade
69kV Five Points-Erath Line Upgrade
Improve ASI REVISEDBuild line Conway-Panama
(2004 ISD) Carryover SEE ELI Presentation
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230kV Harelson SubstationReplace 2nd 230/69kV
200MVA auto with a 300MVA unit
2004

• Harelson 230/69kV substation, located in eastern
  Baton Rouge, has two 200MVA autotransformers.
  This substation, in conjunction with Coly
  substation, serves an area with one of the
  highest load growths in south Louisiana.
• Contingency Under peak loading conditions, loss
  of one of the existing 230/69kV autotransformers
  at Harelson can potentially overload the other
  unit by 19 .
• Recommended Solution Replace 2nd 200MVA auto
  with another 300MVA unit. The 1st auto will have
  been in-service by 12-13-2003 (T2). Substation
  space constraints prohibited the installation of
  a third auto.
• Total Estimated Cost 4.2M 2004 Cost 700 K
• Estimated In-service Date 4-30-2004

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2004
230kV Harelson Substation
Harelson
Weiner
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2004
EGSI-LA Circuit Breaker Replacement Program

• Mandatory Safety Issue
• Replace five 230 kV circuit breakers at Willow
  Glen Substation
• Replace one 69kV circuit breaker at Port Hudson
• Total Estimated Program Cost 7.3 M
• 2004 Cost 2.8 M
• Estimated ISD 7-30-2004

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2004
138 kV Line 368 Port Hudson-Crown Zellerbach
The 138 kV substations in East Baton Rouge and
East Feliciana Parishes are served by 2-230/138
kV autos located at Port Hudson substation. This
industrial loop serves approximately 237 MVA.
Contingency Under peak loading conditions,
loss of the Repapco-Port Hudson line can
potentially overload Line 368 (Port Hudson-Crown
Zellerbach) by as much as 36 in 2004, that
portion of line composed of 795 AA and rated at
174 MVA. Recommended Solution Reconductor 7.5
miles of Line 368 with a conductor capable of at
least 301 MVA or 1260 A. Estimated Cost 3.81M
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2004
138kV Line 368 Port Hudson-Crown Zellerbach
Line 368
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Chlomal-Jennings Loop Upgrade
2004

• The 69kV transmission system between Jennings and
  Chlomal substations will serve approximately 73MW
  of load including the radial from Lawtag
  substation in 2004. The main "trunk" of these
  systems are the contiguous segments comprising of
  Line 13 (Jennings-Compton-Elton), Line 16
  (Elton-Tupper-Serpent-Carter), and Line 11
  (Carter-Lacassine-Chlomal).
• The other main "trunk" is comprised of Line 14
  (Jennings-Lawtag) and Line 12 (Lawtag-Welsh-Deroue
  n-Iowa-Chlomal), which span approximately 29
  miles and serve approximately 39 MW.
• These lines are over 50 years old. Their age
  have manifested in reduced reliability and
  reduced load-serving capacity. Between 1997 and
  2001, an average of 19 outages per year occurred
  on the northern route (Lines 11,13, and 16). In
  2002, 13 outages were recorded.
• Splices have been used to make repairs and they
  are beginning to fail. The current loading can
  potentially cause the 69kV lines to sag into the
  distribution underbuild that is located along
  most of these lines. Upgrading these lines is
  needed to avoid safety and reliability concerns.

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Line 11/12/13/15/16 69 kV Upgrade
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Chlomal-Jennings Loop Upgrade(continued)

• For Existing Configuration
• Contingency Overload/Undervoltage
• Loss of Jennings-Compton Chlomal-Lacassine
  13
• Depressed local area voltages (0.78 p.u. at
  Compton)
• Loss of Jennings-Elton
  Chlomal-Lacassine loads to 99
• Loss of Chlomal-Lacassine Jennings-Compton
  30
• Depressed local area voltages(0.75 p.u.
  at Lacassine)
• Elton-Tupper 5
• Loss of Jennings-Lawtag
  Chlomal-Iowa 6
• Depressed local area voltages (0.91 p.u. at
  Potter)
• Possible solution Upgrade 46 miles of line
  Chlomal-Serpent and Jennings to Compton rated 33
  MVA/ 39 MVA with a conductor capable of 72 MVA
  or 602 amps. Install breaker at Lacassine.
• Estimated cost 13M (2.5M for 2004)
• Expected In-Service Date October 2010

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Existing Configuration of Lines 11, 12, 13, 14
16
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Chlomal-Jennings Loop Upgrade(continued)

• For Modified Proposal
• Contingency Overload/Undervoltage
• Loss of Jennings-Lawtag Chlomal-Iowa 119
  
• Loss of Carter-Lacassine Lawtag-Jennings
  32
• Loss of Chlomal-Lacassine Lawtag-Jennings 43
  
• Loss of Lawtag-Compton Tupper, Serpent,
• Compton, Elton lt 0.9 p.u.
• Possible solution Upgrade 25.5 miles of line
  Chlomal to Carter and Jennings to Roanoke pt
  rated 33 MVA/ 39 MVA with a conductor capable of
  93 MVA or 780 amps. Install breaker at
  Lacassine.
• Total Estimated cost 13M (3.5M for 2004)
• Expected In-Service Date October 2010

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Modified Proposed Reconfiguration
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McManus 69kV Substation Replace Cap Bank
Correct Load PF
2004

• McManus 69kV Substation is located north of Baton
  Rouge in East Feliciana Parish near the end of a
  12 mile radial 69kV line. There will be
  approximately 70 MW of load in the area in 2004.
• Contingency Loss of Port Hudson to Jackson 69kV
  will cause voltages less than 0.91 p.u. near the
  end of this line.
• Recommended Solution Replace existing 18 MVAr
  capacitor bank with 1-30 MVAR capacitor bank.
• Estimated Cost 550K

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McManus 69kV Substation
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69kV Line 280 (Five Points -Erath)
2004

• The 69kV substations Five Points, Texas Erath,
  Erath, and LeBlanc in Vermillion and Iberia
  Parishes are served by two sources, Meaux and
  Moril. The load served by the four 69kV
  substations will be approximately 41 MW in 2004.
• Contingency Under peak loading conditions, loss
  of the Moril 138/69kV autotransformer can
  potentially overload a portion of Line 280 (Five
  Points to Erath) by 13 in 2004, that portion of
  line is composed of 4/0 ACSR and rated at 39MVA.
• Recommended Solution Reconductor 5.01 miles of
  69kV Five Points-Erath with a conductor capable
  of 72 MVA.
• Estimated Cost 1.3M

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69kV L280 (Five Points -Erath)
These lines (Line 280 649) do not connect.
TIGRE
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2005 EGSI-LA Transmission Target Areas
69kV Jackson- Marydale Line Upgrade ISD 2005
Coly-Hammond Build 230kV line 2006 ISD
Winn 69 kV 18MVAR Capacitor Installation ISD 2005
69 kV Lafayette-Holiday Line Upgrade ISD 2006
69 kV Harelson-Flannery Rd Line Upgrade ISD 2006
138 kV Willow Glen-Alchem Line Upgrade ISD 2005
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• Questions