1 entergy louisiana, llc (north) 2010 to 2012 draft construction plan entergy transmission planning...

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Entergy Louisiana, LLC(North)

2010 to 2012 Draft Construction Plan

Entergy Transmission Planning Summit

New Orleans, LA

August 11, 2009

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2010 to 2012 ELL-North Transmission Draft Construction Plan

Northwest LA / Southwest AR voltage support pan (Sarepta)

(Proposed ISD 2011)

Ouachita Transmission Service(Proposed ISD 2012)

Delhi: Install 115 kV Reactor(Proposed ISD Summer 2010)

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Delhi Reactor

Scenario:• The loss of the Sterlington - El Dorado 500 kV line results in the underlying

Sterlington to Tallulah 115 kV line to exceed its thermal rating.

Proposed Solution: • Install a 115 kV, 10Ω series reactor at Delhi.

Proposed In-Service Date: Summer 2010

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FROSTCRAFT

RILLADelhi: Add 10Ω Series Reactor

Delhi Reactor

Proposed ISD: 2010

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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 Trussel Crossing to Vienna– 115 kV line from Vienna to Mount Olive– 115 kV line from Springhill to Taylor– 115 kV line from Haynesville to Emerson– 115 kV line from Danville to Jonesboro

Results in low voltage concerns in north Louisiana• Capacitor bank additions alone do not provide sufficient voltage improvement to this region. • The transmission grid performance can be improved by providing a new EHV source to the area.

Proposed Solution: • Construct a new 345 -115 kV station at Sarepta by tapping the El Dorado to Longwood 345kV line• Install a 21.6 MVAR capacitor bank at Emerson (sized at 21.6 MVAR but only installing 10.8 MVAR)• Install a 32.4 MVAR cap bank at Lucky• Install a 32.4MVAR cap bank at Vienna

Proposed In-Service Date: 2011

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Emerson / Sarepta Area

Sarepta: Build 345 - 115kV substation; Tap

El Dorado-Longwood line

Emerson: 21.6 MVAr sized Capacitor Bank

with 10.8 MVAr installed

Proposed ISD: 2011

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Cap Bank Installations

Proposed ISD: 2011

Lucky / Vienna Area

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Ouachita Transmission Service

Scenario:• Transmission Service

Proposed Solution: Upgrades required for transmission service• Split the Sterlington 115kV bus and replace Sterlington autotransformer #2 with a 500-115 kV, 750

MVA auto.• Relocate existing Sterlington 500/115kV auto #2 to Baxter Wilson (EMI).• Install 43.2 MVAR capacitor bank at Riser.• Upgrade sections of the Frostkraft-Rilla 115kV line to 954 ACSR by rebuilding 2.3 out of 7.8 miles.• Upgrade Walnut Grove-Structure 49 115kV line section (5 mile section of Walnut Grove-Swartz

115kV line) to 1590 ACSR conductor.• Upgrade Sterlington-IPCO 115kV line to 1590 ACSR by rebuilding 5.5 out of 7.8 miles.• Upgrade IPCO-Bastrop 115kV line to 1590 ACSR by rebuilding all 4.2 miles.• Upgrade Bastrop-N. Bastrop Tap-Log Cabin 115kV to 1272 ACSR by rebuilding all 5.8 miles• Upgrade breakers at Vicksburg and Baxter Wilson 115 kV substations (EMI).• North Bastrop Reliability Project: Cut North Bastrop into the Sterlington-North Crossett 115kV line

by constructing 7 miles of double-circuit line with 1272 ACSR conductor.


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FROSTCRAFT

RILLA

Riser 43.2 MVAR Cap Bank

Upgrade Frostcraft to Rilla 115 kV line

Upgrade Walnut Grove to Swartz 115 kV line

Upgrade Sterlington to Log Cabin 115 kV line

Split Sterlington 115 kV bus and replace 500-115

auto #2 with 750 MVA

Loop Sterlington to North Crossett into North Bastrop

Ouachita Transmission Service

Proposed ISD: 2012

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Identified Target Areas Beyond 2013

Wells

West Monroe / Monroe Area

Red Gum

Minden Area Delhi/Tallulah area

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• Minden Area Improvement– Long range project to increase reliability in the Minden area– Re-conductor Minden to Minden LaGen– Add 32.4 MVAR capacitor bank at Minden

• West Monroe/Monroe Reliability Improvements– Long range project targeted to increase reliability– Energize 115kV lines built according to 230kV standards to 230kV level– Complete a 230kV loop around Monroe

• Red Gum Voltage Improvement– Long range project targeted to increase reliability– Energizing 34kV line built according to 115kV standards to 115kV level– Add a cap bank for voltage support at Winnsboro

• Delhi to Tallulah Area– Long range plan to increase reliability to the 115 kV service area– Either construct an EHV source to support the underlying 115 kV area or upgrade

various 115 kV lines.

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Entergy Louisiana, LLC (South) &

Entergy New Orleans, Inc.



New Orleans, LA

August 11, 2009

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2010-2012 ELL-South/ENOI Draft Construction Plan

Improve ASI Capability:Phase II- Panama-Dutch Bayou (completed 2009)Phase III- Coly-Vignes (completed 2009) Conway-Bagatelle (completed 2009)

ELL-South

Loblolly-Hammond:Build 230kV line(Proposed ISD 2012)

SELA Coastal ImprovementsPhase II - Peters Rd-Oakville (Proposed ISD 2012)Phase III – Oakville-Alliance (Proposed ISD 2012)

Paterson:Restore 4 breakers

(Proposed ISD 2009)

Bogue Chitto: Construct500-230 kV Substationand upgrade 230 kV line(Proposed ISD 2013)

Snakefarm-Kenner:Upgrade thermal capacity(Proposed ISD Winter 2010)

Bayou Steel-Tezcuco: Build 230kV Line (Proposed ISD 2012)

Bogalusa-Adams Creek #2: Upgrade 230kV breaker (Proposed ISD Winter 2010)

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Paterson: Restore 4 Breakers

Scenario:• Paterson substation was flooded during Hurricane Katrina resulting

in all major transmission equipment being damaged. Prior to Katrina, Paterson 115kV bus terminated four 115kv transmission lines and operated as a hub for the transmission system in the New Orleans area. Presently, the Paterson 115kV bus has been temporarily restored to operate in a split, east / west bus configuration. The east bus is in series with the Chalmette 115kV and the Sherwood Forest 115kV substations.

• The west bus is in series with the Claiborne 115kV and the Pontchartrain Park 115kV substations. Various single contingencies in the New Orleans area result in overloads on portions of this west bus circuit.

Recommended Solution: • Re-build the Paterson 115kV substation to terminate four 115kV

transmission lines from Pontchartrain Park, Sherwood Forest, Chalmette and Claiborne.


ENOI

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Paterson: Restore 4 Circuit Breakers

Restore Breakers

Proposed ISD 2009

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Scenario: • Studies indicate that loss of the Gypsy to Claytonia 115 kV line will

result in the Snakefarm to Kenner 115 kV line segment to exceed its thermal rating.

Recommended Solution:• Upgrade the thermal rating of the Snakefarm to Kenner 115 kV line

segement.

Proposed In-Service Date: Winter 2010

Snakefarm-Kenner 115kV: Upgrade Thermal Capacity

ELL-South

17 ELL-South / ENOI

Snakefarm-Kenner 115kV: Upgrade Thermal Capacity

Upgrade

Proposed ISD Winter 2010

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Scenario: • Studies indicate that the Adams Creek to Bogalusa #2 230kV line

will exceed its thermal rating upon the loss of the Adams Creek to Bogalusa #1 230kV line.

Recommended Solution:• Increase the thermal rating of the Adams Creek to Bogalusa #2 230

kV line. Project will require the upgrade of breaker #S2520 and switches at the Bogalusa substation from 1600A to 3000A. The jumpers between the switches will be upgraded to meet or exceed the existing 883 MVA thermal line rating of the Adams Creek to Bogalusa line.

Proposed In-service Date: Winter 2010

Bogalusa-Adams Creek #2 230kV: Upgrade Terminal Equipment at Bogalusa

ELL-South

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McKnight

To SOCO’sPlant Daniel

To Coly

To FancyPoint

Bogalusa-Adams Creek #2 230kV: Upgrade Terminal Equipment at Bogalusa

Upgrade Terminal

Equipment

ELL-South / EGSI-LA


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Loblolly-Hammond:Construct 230 kV Substation and Line

Scenario:• Entergy’s transmission system north of Lake Pontchartrain is

primarily supported from the ELL 230kV system between Willow Glen and Waterford. – Loss of the Franklin-McKnight 500kV line, or certain other transmission

contingencies, causes overloads on the underlying transmission system, primarily on the Gypsy-Madisonville 230kV line.

– Adding another 230kV source from a location north of Willow Glen reduces loading on the existing system and improves load serving capability north of Lake Pontchartrain and into south Mississippi.

Recommended Solution: • Construct a new 230 kV line from Loblolly to Hammond utilizing the

existing Coly to Hammond 69 kV line (constructed for 230kV).


ELL-South

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McKnight

ToFranklin


To Coly

To FancyPoint

Loblolly

Loblolly-Hammond: Construct new 230 kV Line

Build new 230kV

line

ELL-South / EGSI-LA

Coly

Proposed ISD 2012

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Scenario: • The primary transmission sources to lower Lafourche, Lower Jefferson, and

Plaquemines Parishes are the Ninemile and Valentine substations. Additionally, upper Plaquemines Parish, including Belle Chasse and the Naval Air Support facility, is experiencing growth after Hurricane Katrina.

• For the contingency loss of the Ninemile-Barataria 115kV or the Valentine-Clovelly 115kV lines, potential low voltages and line overloads will occur.

• Construction of a new 230 kV source into the area will provide the additional thermal capacity needed to serve the Alliance area.

Recommended Solution:• Peters Road-Oakville 230kV

– Build a new 230kV substation at Oakville and a new radial 230kV line from Peters Road to Oakville Substation.

– Proposed In-Service Date: 2012

• Oakville-Alliance 230 kV– Construct a new 230kV transmission line from Oakville substation to

Alliance substation. Add a 150MVA 230/115kV auto at Alliance substation. This project also provides support for the Fourchon area.

– Proposed In-Service Date: 2012

Southeast Louisiana Coastal Improvement Plan:Construct New Peters Road-Oakville-Alliance 230 kV Line

ELL-South

23 ELL-South

SELA Ph #2 - Peters Road-Oakville 230kV: Build new line and substation SELA Ph #3 - Oakville-Alliance 230 kV: Build new line

Build 230kV Line & Auto

Peters Rd.Oakville

Build 230kV Line & Auto

Build 230kV

Line & Sub

Proposed ISD 2012

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Scenario: • Studies indicate that the Belle Point-Little Gypsy 230kV transmission

line exceeds its thermal rating due to the contingency loss of the Waterford-Tezcuco 230kV transmission line. Additionally, the Waterford-Tezcuco 230kV transmission line will exceed its thermal rating due to the contingency loss of the Belle Point – Little Gypsy 230 kV transmission line.

Recommended Solution:• Construct approximately 10.7 miles of new 230 kV transmission line

composed of 954 ACSR conductor from Bayou Steel to Tezcuco to provide a parallel 230 kV line.


Bayou Steel to Tezcuco: Construct New 230kV Line

ELL-South

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Bayou Steel

Bayou Steel to Tezcuco: Construct New 230kV Line

Build new 230kV

line

ELL-South / EGSI-LA

Proposed ISD 2012

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Scenario: • Loss of the Franklin to Bogalusa 500kV line results in increased flows on the

underlining 115kV system in South Mississippi and ties to North Shore as the 500 kV north to south path is interrupted. Two options are being evaluated to address the impacts on the underlying 230 kV and 115 kV transmission systems in the Louisiana northshore and south Mississippi areas.

Proposed Solution:• Option 1: Either tap the 500kV line from McKnight to Daniel-MPCO near

where the 500kV line crosses the two 230kV lines from Bogalusa to Ramsay to Madisonville and Bogalusa to Talisheek. Construct a new 500-230kV Bogue Chitto substation. Upgrade the 230 kV Bogue Chitto to Ramsay to Madisonville 230 kV line

- OR -• Option 2: Loop the existing Mcknight to Daniel-MPCO 500 kV line in and out

of the Bogalusa 500 kV substation.

Project will require coordination with neighboring utilities


Bogue Chitto: Build a new 500/230kV substation and upgrade 230kV line from Bogue Chitto-Ramsay-Madisonville

ELL-South

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McKnight

ToFranklin


To Coly

To FancyPoint

Bogue Chitto: Option 1Construct a new 500/230kV substation and upgrade

230kV line

Build new 230kV

substation

ELL-South / EGSI-LA

Upgrade 230kV

line

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McKnight

ToFranklin


To Coly

To FancyPoint

Bogue Chitto: Option 2Loop McKight to Daniel 500 kV line into Bogalusa

Construct 500 kV

facilities

ELL-South / EGSI-LA

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ELL-South and ENOI Target Areas 2013 and Beyond

Clovelly - Golden Meadow: Upgrade 115kV Line

Paterson:Install 230/115kV auto

Napoleonville: Install 21MVAR Capacitor Bank

DSG: Phase III

Claytonia 115 kV:Install capacitor bank

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Identified Target Areas Beyond 2013ELL-S / ENOI

• Napoleonville Voltage Support– Add capacitor bank to area for voltage support

• Golden Meadow to Clovelly– Either upgrade existing 115 kV line or construct additional 115 kV line in

the area.

• Paterson– Add 230-115 kV autotransformer at Paterson

• DSG Phase 3– Convert/reconfigure facilities in the DSG area to provide additional 230

kV tie between Waterford and Ninemile

• Claytonia Voltage Support– Add capacitor bank to area for voltage support

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Entergy Gulf States Louisiana, LLC



New Orleans, LA

August 11, 2009

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Entergy Gulf States Louisiana, LLC2010 to 2012 Draft Construction Plan Projects

Carter and EltonCapacitor Bank Installation (Proposed ISD 2010)

Alchem-Monochem: 138 kV Line Upgrade(Proposed ISD 2011)

Acadiana Area Improvement ProjectProposed ISD: Phase 1 (2011) Phase 2 (2012)

Acadia Capacitor BankInstallation (Complete)

Addis to Cajun: Upgrade 230 kV line

(Proposed ISD 2011)

Youngsville 138 kV Distribution Station (Proposed ISD 2011)

Dynergy to Pecan Grove: Construct 2nd 230 kV Line (Proposed ISD 2012)

Tejac to Marydale: Upgrade 69 kV line (Proposed ISD 2012)

Nelson to Mossville: Upgrade 138 kV line (Proposed ISD 2013)

Willow Glen to Conway: Consturct New 230 kV Line(Proposed ISD 2014)

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Scenario: Approximately 90 MW of local area load is sourced by the 69kV transmission system

between Jennings and Chlomal (including the radial load to the south of Lawtag. The primary "trunks" of the system are the Jennings-Compton-Elton-Tupper-Serpent-Chlomal 69 kV line and the Chlomal-Iowa-Welsh-Lawtag-Jennings 69 kV line.

• The contingency outage of a 69kV line segment between Jennings and Elton results in the Chlomal to Lacassine 69kV line to exceed its thermal rating. Likewise, the contingency outage of a 69 kV segment between Chlomal and Carter results in the Jennings to Compton 69 kV line to exceed its thermal rating.

• The contingency outage of the Lawtag to Jennings 69 kV line results in the Lake Charles Bulk to Chlomal 69 kV line and the Chlomal to Iowa 69 kV line segment to exceed their thermal rating.

Recommended solution:• Establish normally open point at Serpent and Lawtag. Proposed ISD: 2010• Upgrade 69 kV capacitor bank at Elton to 14 MVAR, Install 69 kV, 14 MVAR capacitor

banks at Carter. Proposed ISD: 2010

Carter and Elton Capacitor Bank Installation (formerly Jefferson Davis: 69 kV Area Improvements)

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NOP at Serpent

NOP at Lawtag

14.4MVAr Cap Bank at Carter

14.4MVAr Cap Bank at Elton

Proposed ISD: 2010

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Youngsville 138 kV Distribution Station(formerly Upgrade Lafayette-Holiday-Billeaud 69 kV line)Scenario:• There is approximately 141 MW of load in the area between

Scott and New Iberia. The Lafayette-Holiday-Billeaud line is currently rated at 39 MVA.

• Loss of Cleco’s Flanders to Hopkins 138kV Line, the Moril 138/69 kV autotransformer, or the Moril to New Iberia 69 kV line will result in the Lafayette to Holiday to Billeaud 69kV line to exceed its thermal rating.

Recommended Solution:• Tap Cleco’s 138kV Flanders to Hopkins line and construct a new

138 -13.8kV distribution substation to allow area load at Billeaud and Averico to be shifted off of the existing 69 kV transmission system.

Proposed ISD: 2011

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Construct new station.

Proposed ISD: 2010

Proposed ISD: 2011

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Alchem - Monochem: Uprate 138 kV Line

Scenario:

• In the industrial corridor, the Alchem to Monochem 138kV line is part of a 138 kV path that operates parallel to Willow Glenn to Conway 230 kV line.

• The contingency loss any of the 230 kV segments from Willow Glen to Vulchlor will result in the Alchem to Monochem 138 kV line to exceed its thermal rating.

Recommended Solution:

• Uprate line to 100 deg C operating temperature by replacing 6 structures. Project will increase rating of line from 225 MVA to 275 MVA.


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Uprate 138kV Line

Alchem - Monochem: Uprate 138 kV Line

Proposed ISD: 2011

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Addis to Cajun Line Upgrade

Scenario:

In the winter of 2011, loss of the Webre to Big Cajun 500 kV line or the Jaguar to Esso Tap 230 kV line results in the existing Addis to Cajun 230 kV line to exceed its thermal rating.


Reconductor from structure 250 to 251 (0.06 miles) to double bundled 649.5 ACAR


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Addis to Cajun 230 kV Line Upgrade

Upgrade Line

Proposed ISD: 2011

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Acadiana Area Improvement ProjectPhase 1 and Phase 2

Scenario:• Results of a long term joint study performed by Entergy, CLECO,

LUS, and the ICT determined a set of reliability and economic projects beneficial to the Acadiana Load Pocket.

• Project was developed to be constructed in two phases.


Phase 1 (Entergy Projects)– Meaux Substation: Install 230 kV and 138kV terminals to connect

450MVA 230-138kV autotransformer.– Moril Substation: Install 138kV line terminal for Cleco’s Segura to Moril

138kV Transmission Line.– Richard Substation: Install 500kV terminal to connect Cleco’s 500-

230kV 750MVA autotransformer adjacent to Entergy’s Richard substation.

– Meaux to Sellers Road Transmission Line: Construct 9.5 miles of 439MVA (954 ACSR) 230kV Transmission line on new 100’ right-of-way. Cleco’s Sellers Road line bay constructed by Cleco.

Proposed ISD: 2011

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Continued

Recommended Solution (continued):

Phase 2– Wells Substation: Construct 500 kV terminal to connect CLECO’s owned

and installed 500-230 kV 560 MVA autotransformer.– Labbe to Sellers Road 230 kV Line: Construct approximately 15 miles of

230kV 829 MVA line from LUS's Labbe 230 kV Substation to CLECO's Sellers Road Substation. Labbe 230 kV line bay and breaker constructed by LUS. Sellers Road 230 kV line bay and breaker constructed by CLECO.

– Upgrade 69 kV breaker at Scott and 69 kV breaker at Moril.

Proposed ISD: 2012

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Proposed ISD: 2011 / 2012

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Pecan Grove to Dynegy (Calcasieu)

Scenario:

Loss of the 1.7 mile, Pecan Grove to Dynegy 230 kV line will result in the Nelson to Moss Bluff 230kV line segment (Lake Charles 230 kV loop) to exceed its thermal rating.

Recommended Solution:• Construct a second 230kV line with a minimum rating of 641 MVA

form Pecan Grove to Dynegy.• Install breakers at Pecan Grove and Dynegy.


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Pecan Grove to Dynegy (Calcasieu)

Construct 2nd 230kv Line

Proposed ISD: 2012

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Tejac to Marydale

Scenario:• The 69 kV transmission system north of Port Hudson substation

serves 12 substations.• The Tejac to Marydale 69 kV line segment will exceed its thermal

rating due to the loss of Port Hudson - Sandy Creek - Jackson or Francis - Grant - Port Hudson.

Recommended Solution:• Upgrade the 3 mile Tejac to Marydale 69kV line segment to a rating

of at least 69 MVA


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Tejac to Marydale

Upgrade 69kv Line

Proposed ISD: 2012

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Nelson to Mossville

Scenario:• Loss of the Carlyss to Citcon West 138 kV line will result in Nelson

to Mossville 138 kV line to exceed its thermal rating.

Recommended Solution:• Upgrade the 3.3 mile Nelson to Mossville 138 kV line to at least 380

MVA.


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Nelson to Mossville

Upgrade 138kv Line

Proposed ISD: 2013

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Willow Glen to Conway 230 kV line

Scenario:• Loss of the Willow Glen to Waterford 500 kV or the Coly to Vignes

230 kV line results in the St. Gabriel to A.A.C. to Belle Helene 230 kV line to exceed its thermal rating.

Recommended Solution:• Construct a new 230kV line from Willow Glen to Conway

(approximately 15 miles) with a minimum rating of at least 700 MVA.


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Willow Glen to Conway 230 kV line

Construct NEW 230kv Line

WILLOW GLEN

CONWAY

Proposed ISD: 2014

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Baton Rouge Area•Port Hudson•Harelson – Gloria Area•McManus – Brady Heights•Jackson – Tejac•Greenwell Springs Area

Acadiana Area•Moril Add 138–69 kV Auto •Scott – Carencro 69 kV•Champagne 138 kV

Lake Charles Area•Solac Add Auto•Lawtag – Jennings 69 kV upgrade•Lake Charles Bulk Add Auto•LC Bulk - Cholomal – Lacassine 69 kV upgrade•Lake Charles 230 kV Improvement•Mossville to Alfol 69 kV

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Identified Target Areas Beyond 2013Baton Rouge Area

• Port Hudson– Long range project targeted to increase reliability of 69kV system– Reconfigure 69kV station and/or bring in a new 138kV source

• Harelson – Gloria– Long range project targeted to increase reliability of 69kV system– Upgrade 69kV line

• McManus – Brady Heights– Long range project targeted to increase reliability of 69kV system

• Jackson – Tejac– Long range project targeted to increase reliability of 69kV system

• Greenwell Springs Area Reconfiguration– Long range project targeted to increase reliability of 69kV system– Upgrade overloaded 69kV lines or relay upgrade to allow for three

terminal lines

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Identified Target Areas Beyond 2013Baton Rouge Area

Jackson – TejacUpgrade

McManus – Brady HeightsUpgrade

Port Hudson – Reconfigure or new source

Greenwell Springs Area Reconfiguration

Line or Relay Upgrades

Harelson – GloriaUpgrade

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Identified Target Areas Beyond 2013Acadiana Area

• Moril– Add 2nd 138/69kV autotransformer to eliminate contingency loss of

existing auto

• Scott – Carencro– Long range project targeted to increase reliability of 69kV system– Upgrade 69kV line

• Champagne– Long range project to provide voltage support during contingency

outages– Add 138 kV Capacitor Bank

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Identified Target Areas Beyond 2013Acadiana Area

MorilAdd Autotransformer

Champagne138 kV Cap Bank

Scott – Carencro 69 kV Upgrade

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Identified Target Areas Beyond 2013Lake Charles Area

• Solac– Long range project targeted to increase reliability of 69kV system– Upgrade 230-69 kV autotransformers or add 3rd auto

• Lawtag – Jennings– Long range project targeted to increase reliability of 69kV system– Upgrade 69kV line

• Lake Charles Bulk Autotransformer and upgrade 69 kV lines– Long range project targeted to increase reliability of 69 kV system– Add 3rd 138-69 kV autotransformer– Upgrade Lake Charles Bulk to Chlomal to Lacassine 69 kV lines

• Lake Charles 230 kV Improvement– Long range project targeted to increase reliability of 230 and 138kV

system– Build a new 230kV line from Nelson towards LC Bulk and 230-138kV

station to create 230kV loop

• Mossville to Alfol 69 kV

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Identified Target Areas Beyond 2013Lake Charles Area

Lake Charles Improvement230kV Loop

SolacUpgrade or add Auto

Lawtag – JenningsUpgrade

LC Bulk – ChlomalRe-conductor

Cholomal – LacassineUpgrade line & install

breaker

LC Bulk – Add 3rd Auto

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Entergy Texas, Inc.



New Orleans, LA

August 11, 2009

60

2010 to 2012 ETI TransmissionDraft Construction Plan

Fawil: Upgrade Auto Proposed ISD Winter 2009

Newton Bulk Retap CTProposed ISD Summer2009College

Station

Porter-Tamina:Replace Breaker/SwitchesProposed ISD Winter 2009

College Station Tap: Close N.O. Switch


Beaumont 69 kV Improvement Plan

Proposed ISD Summer 2009

WRRIP 3 Interim: Part 1 - Relocate Caney Creek Proposed ISD Winter 2010Part 2 – Convert Jacinto to Lewis Creek Proposed ISD Summer 2011Part 3 – Upgrade S Beaumont to Fontenot’s Corner 138 kV line Proposed ISD Winter 2010

Hartburg – McLewis 230kV Line Upgrade

Proposed ISD 2011

Tamina to Cedar Hill: Upgrade LineProposed ISD Winter 2011

Cedar Hill – Plantation - Conroe: Upgrade LineProposed ISD 2012

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69 kV Beaumont Network Upgrades

Scenario:• In the 69kV Beaumont area there exists several single contingency

thermal overloads including:o 69kV Line 581 (Helbig – Rosedale)o 69kV Line 468 (Elizabeth – Gallier)o 230/69kV Helbig Autotransformerso 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.o Approximately 5.5 miles of 69kV transmission lines


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69 kV Beaumont Network Upgrades

CARDINAL

LAMAR

SOUTH BEAUMONTBULK

VIRGINIALINCOLN

YANKEEDOODLE

CROCKETT

DUPONT BEAUMONT

NITROCDT

L-458

L-458

L-1

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UPGRADE LINE 576

UPGRADE LINE 576

UPGRADE LINE 190

UPGRADE LINE 190

UPGRADE LINE 98

UPGRADE LINE 98

CLOSE N.O.

SWITCH

CLOSE N.O.

SWITCH

CLOSE N.O.

BREAKER

CLOSE N.O.

BREAKER

ADD LINE BREAKERS

ADD LINE BREAKERS


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Newton Bulk: Re-tap CT

Scenario:• The single contingency outage of the Cypress-Hartburg 500 kV line

causes an overload of the Newton Bulk-Holly Springs 138 kV line. The rating of this line is limited to 143 MVA by a CT ratio at Newton Bulk.

Recommended Solution:• Re-tap the CT at Newton Bulk to achieve a rating of 280 MVA on the

line


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Newton Bulk: Re-tap CT


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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.• Add two 138 kV breakers to ensure reliable operation


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Fawil: Replace 138/69 kV Autotransformer


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Porter-Tamina: Replace Breaker/Switches

Scenario:• 138 kV Line 823/886 (Porter – Tamina - Cedar Hill) is one of the

primary sources into Montgomery County.• The single contingency loss of 138 kV Line 582 (Oak Ridge - Porter)

causes thermal overloads on 138 kV Line 823 (Porter to Tamina).

Recommended Solution:• Upgrade station equipment at Tamina, including a breaker,

switches, and bus, to bring rating of Line 823 Porter-Tamina up to 478 MVA capacity.


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Porter-Tamina: Replace Breaker/Switches

UPGRADE TO 478 MVA

CAPACITY BY REPLACING

TAMINA EQUIPMENT

UPGRADE TO 478 MVA

CAPACITY BY REPLACING

TAMINA EQUIPMENT


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Scenario:• The single contingency outage of the Grimes-Navasota 138kV line

causes overloads along the Lewis Creek-Longmire 138kV line, as well as undervoltages along the Navasota-Longmire 138kV line.

Recommended Solution:• Close the normally-open switch between Speedway 138kV and the

College Station 138kV tap to bring another path from Grimes into Navasota


* Project has been delayed due to feasibility of implementing a three terminal operating configuration. A three-breaker switching station at College Station is being investigated as an alternative solution.

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COLLEGESTATION TAP

N.O.


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Western Region Reliability Improvement PlanPhase 3 Interim (Parts 1 and 3)

Scenario:• Load growth within the Western Region load pocket is such

that transmission improvements are necessary to reliably serve the area under an N-1, G-1 contingency criteria

Recommended Solution:• Part 1 - Relocate Caney Creek load delivery point (ETEC-owned) to

new location on 138 kV Line 587 (Lewis Creek – Conroe)• Part 3 - Reconductor Line 88/66 from Fontenot’s Corner to South

Beaumont 138 kV station [~9 miles]


Estimated Cost: $15 MM

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Western Region Reliability Improvement Plan

Phase 3 Interim (Parts 1 and 3)

Relocate Caney Creek 138kV to

Line 587

Relocate Caney Creek 138kV to

Line 587

Upgrade Line 88/66

Upgrade Line 88/66


73

Western Region Reliability Improvement PlanPhase 3 Interim (Part 2)

Scenario:• Load growth within the Western Region load pocket is such

that transmission improvements are necessary to reliably serve the area under an N-1, G-1 contingency criteria

Recommended Solution:• Convert 138 kV Lines 524/824 (Jacinto-Lewis Creek) to 230 kV

operation [~30 miles]• Convert Peach Creek Substation (ETEC-owned) from 138 kV to 230

kV Operation• Install 230 kV Substation at Lewis Creek including 230/138 kV

autotransformer

Projected In-Service Date: Summer 2011

74

Western Region Reliability Improvement Plan

Phase 3 Interim (Part 2)

Convert Line 524/824

Convert Line 524/824


75

Hartburg-Inland Orange-McLewis230 kV Line Upgrade

Scenario:• 230 kV Line 195 (Hartburg – Inland Orange – McLewis) 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 13 miles of 230kV Line 195 (Hartburg –

Inland Orange - McLewis) and upgrade station equipment as necessary to achieve 800 MVA capacity along entire circuit.

Projected In-Service Date: Summer 2011

76

Hartburg-Inland Orange-McLewis230 kV Line Upgrade

MCLEWIS


77

Tamina – Conroe 138kV Reconductor

Scenario:• 138 kV Line 886 (Tamina – Cedar Hill – Plantation – Conroe) 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 thermal overloads on 138 kV Line 886 (Tamina - Conroe).

Recommended Solution:• Re-conductor approximately 10 miles of 138kV Line 886 (Tamina –

Cedar Hill – Plantation – Conroe) and upgrade station equipment as necessary to achieve 478 MVA capacity along entire circuit.

Proposed In-Service Dates: Winter 2011 (Tamina – Cedar Hill)Summer 2012 (Cedar Hill – Plantation – Conroe)

78

Tamina – Conroe 138kV Reconductor

UPGRADE TO 478

MVA CAPACITY

UPGRADE TO 478

MVA CAPACITY

Proposed ISD: Tamina to Cedar Hill Winter 2011 Cedar to Plantation to Conroe Summer 2012

79

Reconductor Jasper-Rayburn138 kV Line

Scenario:• The single contingency outage of the Cypress-Hartburg 500

kV line causes an overload of the Jasper-Rayburn 138 kV line

Recommended Solution:• Reconductor the Jasper-Rayburn 138 kV line (approx. 13.5

miles) to achieve a capacity of 265 MVA


80

Reconductor Jasper-Rayburn138 kV Line


81

Identified Target Areas Beyond 2013Corrigan/Cleveland/Kountze Area Improvements

• Shepard/Cleveland/Honey Island/Corrigan Capacitor Banks• Upgrade Kountze to Warren 138 kV• Upgrade Pelican Road to Shepard 138 kV

Lakes Area Improvements• Mill Creek/Call/Doucette Capacitor Banks• Upgrade Doucette to Rayburn 138 kV• Upgrade Newton Bulk to Toledo 138 kV

Cypress/Jacinto/Dayton Area Improvements• Dayton/New Caney Capacitor Banks• Upgrade Dayton to Cleveland 138 kV• Upgrade Dayton to Eastgate 138 kV• Upgrade Jacinto to Porter 138 kV• Upgrade Jacinto to Cleveland 138 kV• WRRIP Phase 3 Final• 2nd Cypress Auto• Upgrade Cypress to Lumberton 138 kV

Huntsville/Conroe Area Improvements• Huntsville/Rivtrin Capacitor Banks• Conroe Switching Station• Alden SVC

• Ameila to Helbig 230 kV Upgrade• Ameilia to Cypress 230 kV Upgrade• 2nd China to Amelia 230 kV Line• Orange County 230 kV Swithcing Station• Sabine to Port Neches 138 kV Upgrades

Ameilia/BeaumontArea Improvements

1 entergy louisiana, llc (north) 2010 to 2012 draft construction plan entergy transmission planning...

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