ICT 2011 Reliability Assessment and Construction Plan Evaluation

Entergy Transmission SummitAugust 11, 2010SheratonNew Orleans, Louisiana

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Overview

• Background

• Scope

• Draft Construction Plan

• Results

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Background

• Reliability Assessment is performed pursuant to Entergy’s Open Access Transmission Tariff (OATT) Attachment K.

• Objectives:

• Assess of the ability of the Entergy transmission system to perform according to the Planning Criteria.

• Evaluate the Construction Plan’s ability to mitigate any performance deficiencies found.

• Provide basis for development of the Base Plan.

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Background

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Background

• Draft report was made available for stakeholder review and comment

• Posted on Entergy’s OASIS July 1, 2010

• Presentation made at LTTIWG July 21, 2010

• Final report is posted on Entergy’s OASIS.

• Detailed spreadsheets not included in report are posted on Entergy’s oasis

• Background models, data, and other information is posted on Entergy’s oasis

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Entergy Planning Criteria

• Planning Criteria

• NERC Planning Standards

• SERC Supplements

• Entergy’s Local Planning Criteria

• Entergy’s Business Practices (Planning Guidelines)

• Posted on Entergy’s OASIS

• NERC Planning Standards being revised

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Reliability Assessment Scope

• Models (2009 Series Update 1)

• Near-Term Period: Summer & Winter 2012 & 2016

• Longer-Term Period: Summer 2019

• Construction Plan Projects

1. Initial Scan: Approved Projects from 2010-12 Construction Plan (CP)

2. CP Evaluation: Approved and Proposed Projects from 2011-13 CP

• System Intact Review – Category A

• Contingency Scan – Category B

• Breaker-to-Breaker analysis

• ICT’s 100MW rule (Bus-to-Bus analysis)

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Reliability Assessment Scope (cont)

• Sensitivities

• Specific Load Pocket Criteria

• Low Hydro Sensitivity

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Entergy’s Draft Construction Plan 2011-2013

• May 7, 2010: Original Draft Posted

• July 28, 2010: Update 1 Posted

• 2 New Projects (1 replaced)

• 2 Delayed Projects

• 5 projects changed from Proposed to Approved

• 2010 BP and 2010-12 CP Differences Report

• No differences

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Map Legend

Year Color Key

Overloads and Low VoltagesPlanned Upgrade from

Entergy’s Draft Construction Plan

Other Notes

Solution being investigated

Annotations

Contingency Scan Results with Entergy’s Draft Construction Plan Projects Included

Key to Map Highlights

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Arkansas CPE Results

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Brandon Hentschel

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(2015)Calico Rock-Melbourne - Upgrade 161kV Line

(2016) Norfork-Calico Rock : Upgrade 161 kV Line

Holland Bottoms Project

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(2019)Truman-Truman West- Upgrade 161 kV Line

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Clarksdale op-guide

Helena Op-guide

(2016)AECC L&D 2 to Gillett: Construct new 115 kV Line

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(2016)AECC L&D 2 to Gillett: Construct new 115 kV Line

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(2016)Hot Springs Hamilton (Albright) - Bismarck: Construct new 115 kV Line and convert Bismarck and Mountain Pine South to ring bus stations. Add capacitor bank at Milton

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(2019)Mayflower - Morgan 115 kV Line: Upgrade

(2016) NLR Westgate - NLR Levy: Reconductor 115 kV Line

(2016) NLR Levy - NLR Dixie: Reconductor 115 kV line

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(2016) Monticello East to Reed construct new 115 kV line

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(2016)Ebony SS 161 kV (Phase 2): Install, 24 MVAR capacitor bank

(2016)Getwell Area Improvements

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Low Hydro

• Simulate reduced availability of SPA hydro units during summer peak (2012, 2016, and 2019)

• Conway (Arkansas) Area

• Little Rock

• Truman

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Low Hydro (cont)

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Low Hydro (cont)

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Load Pocket Criteria

• 2016 Summer

• Application of Specific Load Pocket Criteria

• Western

• Amite South

• Downstream of Gypsy (DSG)

• G-1, N-1

• No new problems identified.

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Mississippi CPE Results

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Eric Burkey

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(2016)Getwell Area Improvements:•Construct new 230 kV line from Getwell to new Senatobia Industrial 230-115 kV substation.•Add new 230-115 kV autotransformer at new Senatobia Industrial substation.•Cut in Senatobia to Sardis 115 kV line into new substation.

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(2013)Ray Braswell - Wyndale 115kV Line

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(2013)Ray Braswell - Wyndale 115kV Line

(2017)Braswell to Forest Hill 115 kV

Line Upgrade

(2014)Rankin Industrial – Airport 115 kV Line Upgrade

(Target)Upgrade South Jackson - East Jackson 115kV line

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(2016)Lake Village Bagby to Reed 115

kV Line Upgrade

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Louisiana CPE Results

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James Lyle

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Vatican-Scott 138kV

(2015)Vatican 138 kV Substation: Cut in Scott to Acadia 138 kV line to Vatican 138 kV, and add breakers at Vatican.

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(2019) Champagne – Add 138kV Capacitor Bank

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(2015) Port Hudson – Zachary REA 69kV Upgrade Line

(2014) Jackson – Tejac 69kV Line

(2014) McManus to Brady Heights – Upgrade 69kV Line

(2015) Port Hudson – 69kV Area Improvement

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(2015) Coly Area Improvement – Upgrade 230/69kV Autotransformers

(2015) Port Hudson – Zachary REA 69kV Upgrade Line

(2014) McManus to Brady Heights – Upgrade 69kV Line

(2014) Jackson – Tejac 69kV Line

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(2015) St. James – Add 230kV Capacitor Bank

(2016) Sorrento Upgrade 138/115kV Auto & upgrade Gonzales-Sorrento 138kV Line

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Valcherie – Waterford 230kV

(2018) Raceland – Cut Waterford to Valentine 230kV line in/out of Raceland

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Cleco Project: Var support

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(2016) Mt. Olive to Arcadia – Construct new 230kV line (Operate at 115kV)

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(2016) Mt. Olive to Arcadia – Construct new 230kV line (Operate at 115kV)

(2019) Arcadia to Sailes – Construct new 230kV line (Operate at 115kV)

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Lake Charles Bulk Transformers

(2017) LC Bulk: Construct 230kV facilities & add 230/69kV Autotransformer

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Chlomal - Lacassine

Canal-LA - Mossville

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Texas CPE Results

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Eddie Filat

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Create normally open point at Batson

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Create normally open point at Batson

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Transfer of load from Atlantic Bulk 69 kV to the 230 kV system at Gulfway.

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(2016) China – Stowell 138 kV Line

South Beaumont to Lovells Lake

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(2016) Conroe Area Switching Station

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(2015) Upgrade Jacinto-Splendora 138 kV Line

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(2012) New Caney capacitor bank expansion

(2018) Expand cap bank at Dayton Bulk

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Questions?

• Brandon HentschelEngineer II, ICT Planning501-688-1603bhentschel@spp.org