west memphis facilty study for trasmission service · 2010. 12. 15. · this upgrade may be...

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TRANSMISSION LINE & SUBSTATION PROJECTS

COMPANY:EAI

CUSTOMER: GRAND RIVER DAM AUTHORITY

FACILITY STUDY

EJO # F4PPAR0480

ICTT-ASA-2010-006

TRANSMISSION SERVICE REQUEST

OASIS REQUEST NO: SPP 73453318

Revision: 0

Rev Issue Date Description of Revision Prepared By Approved By

A 6/14/2010 1st Draft JAT ADH

A1 6/28/2010 Edits GWR

B 6/30/2010 For Review JAT ADH

C 7/13/2010 Final Draft for ICT Review GWR

0 7/15/2010 ICT Determines Upgrade Classification B Finkbeiner J Holland

* Note: All required JET approvals and other stakeholder concurrences are shown in the voting polls in eRoom.

OASIS SPP 73453318 Grand River Dam Authority Facilities Study

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TABLE OF CONTENTS

1. PROJECT SUMMARY ....................................................................... 3

1.1. Background and Project Need............................................................................... 3

1.2. Scope Summary .................................................................................................... 3

- Jonesboro-Hergett (JCWL) 161kV Transmission Line, L-941 - Upgrade to 174MVA ................................................................................................................ 3

- Trumann – Trumann West (AECC) 161 Transmission Line, L-941.2/836 – Upgrade to 155MVA .............................................................................................. 4

1.3. Cost Summary ....................................................................................................... 4

1.4. Schedule Summary ............................................................................................... 4

1.5. Automatic Generation Control ............................................................................... 5

2. SAFETY REQUIREMENTS ................................................................ 5

3. GENERAL ASSUMPTIONS ............................................................... 5

4. SCOPE OF WORK ............................................................................. 6

4.1. Jonesboro (APL) – Hergett (JCWL) 161kV Transmission Line, L-941: Upgrade from a capacity of 147MVA to at least 174MVA .................................................... 6

4.2. Trumann – Trumann West (AECC) 161kV Transmission Line, L-941.2/836: Upgrade from a capacity of 147MVA to at least 155MVA ..................................... 7

4.3. Jonesboro (APL) 161kV Substation: ..................................................................... 8

4.4. Hergett (JCWL) 161kV Substation: No work identified ......................................... 8

4.5. Trumann 161kV Substation: No work identified .................................................... 9

4.6. Trumann West (AECC) 161kV Substation: No work identified ............................. 9

5. COST ................................................................................................. 9

6. SCHEDULE ...................................................................................... 10

7. RISK ASSESSMENT ....................................................................... 11

8. CONFIRMED RESERVATIONS ....................................................... 12

9. STUDY QUEUE ................................................................................ 17

10. ATTACHMENTS .............................................................................. 17

A. Table of Acronyms .......................................................................................... 17

B. Scope Summary Diagram / Area Map ............................................................ 18

C. One Line Drawings ......................................................................................... 19

D. Duration Schedule .......................................................................................... 23


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PROJECT SUMMARY

1.1. Background and Project Need

The purpose of this Facilities Study is to determine the availability of transfer capability across Entergy’s transmission system from Grand River Dam Authority (GRDA) to Southwestern Power Authority (SPA), to evaluate the Grand River Dam Authority’s request for 20MW of yearly point to point transmission service. The time period for this transfer is from 7/1/2010 until 7/1/2038. The direction of the transaction is GRDA to SPA. This study was performed on the latest available July 2010 – November 2011 monthly models, 2011 – 2019 winter, and 2012 – 2019 summer peak seasonal models, using PSS/E and MUST software by Power Technologies Incorporated (PTI). The facilities study identifies any transmission constraints resulting from the requested power transfer. The facilities study also includes cost estimates to correct any transmission constraints. ATC is not available for 7/1/2010-1/1/2011. The following constraints are identified from 5/1/2010-5/1/2011. No redispatch is available.

Melbourne-Sage 161kV FTLO Water Valley-Highland-Glencoe-Norfolk 161kV (Approved – 2010 Expected ISD)

Melbourne-Calico Rock 161kV FTLO Water Valley-Highland-Glencoe-Norfolk 161kV

ATC is available for 1/1/2011-6/1/2018.

For ATC beyond 6/1/2018, the following Scope Summary projects must be constructed for service.

1.2. Scope Summary

The overall scope of this project is summarized as follows,

- 2010-2012 Approved Entergy Construction Plan Project

The following projects are approved in the 2010-2012 Entergy Construction Plan. These projects are required to be in-service prior to the start of this transmission service.

• Replace line trap at Parkin 161kV – 2010 Expected ISD • Monette-Paragould 161kV Upgrade – 2012 Expected ISD • Holland Bottoms Phase 1 – 2011 Expected ISD


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- Jonesboro-Hergett (JCWL) 161kV Transmission Line, L-941 - Upgrade to 174MVA

The Jonesboro-Hergett (JCWL) 161kV transmission line overloads for the loss of the Jonesboro-Jonesboro (SPA) 161kV transmission line. It is required that Jonesboro-Hergett (JCWL) 161kV transmission line be upgraded from a capacity of 148MVA to at least 174MVA. The Hergett 161kV substation is owned by Jonesboro City, Water, & Light (JCWL). During the completion of OASIS 1498226 Facility Study, it was confirmed that their switches are rated at 1200 amps and the breaker is rated at 1600 amps. The owner will determine the cost of any other substation upgrades.

- Trumann – Trumann West (AECC) 161 Transmission Line, L-941.2/836 – Upgrade to 155MVA

The Trumann-Trumann West (AECC) 161kV transmission line overloads for the loss of the Newport-Newport Industrial-Newport AB-Cash-Jonesboro 161kV transmission line. It is required that the Trumann-Trumann West AECC 161kV transmission line be upgraded from a capacity of 148MVA to at least 155MVA.

This upgrade may be eligible to receive financial compensation payments for unused, excess capacity created.

- Substations

There is no equipment to be replaced in the substations. A Relay Impact Study will be performed and relay settings changes may be required.

1.3. Cost Summary

The estimated total project cost is $12,200.000. This cost does not include a Tax Gross Up of 27.35% which may apply.

The ICT has assigned $7,600,000 as Base Case upgrades and $4,600,000 as Supplemental Upgrade based on Attachment “T” of Entergy’s ICT (Independent Coordinator of Transmission) filing to the FERC.

1.4. Schedule Summary

Overall In-Service Date for the entire project is 04/30/2018.

◦ The above In-Service Date is based upon commencing the detailed definition phase work in February 2015, from that point moving forward into design work.

◦ Outage availability is a major concern for construction of this project.

◦ The outages required for the rebuild of the T-Lines must be entered into Entergy’s outage management system (AORS) when the schedule is baselined after project approval by the customer.

◦ It was assumed that resources would be available for design and construction.


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◦ It was assumed that construction could only be done in off peak times.

◦ It was assumed that no special permits would be required.

1.5. Automatic Generation Control

Upgrades required by Entergy for AGC service are discussed in Entergy’s OASIS posting “Entergy Transmission Guidelines for Automatic Generator Control Applications”. See link http://www.oatioasis.com/EES/EESDocs/INFO.htm

SAFETY REQUIREMENTS

Safety is a priority with Entergy. Safety will be designed into substations and lines. The designs will be done with the utmost safety for personnel in mind for construction, operation, and maintenance of the equipment. All employees working directly or indirectly for Entergy shall adhere to all rules and regulations outlined within the Entergy Safety manual. Entergy requires safety to be the highest priority for all projects. All Entergy and Contract employees must follow all applicable safe work procedures. Should the work contained within this Facility Study be approved, a detailed Safety Plan will be formulated and incorporated within the project plan.

GENERAL ASSUMPTIONS Upon receipt of formal approval from customer authorizing design and

construction, Entergy will prepare a detailed project execution plan and proceed with project execution.

The ROW of the many line sections is known to range from cultivated land to swamp. It’s known that some of the ROW(s) contain river crossings and highway crossings.

All estimates for transmission line rebuilds were done assuming pole for pole replacements with direct embedded poles.

No special construction equipment was included in the base cost of the project.

No alternative design approaches were pursued in this study.

All permits will be attainable in a reasonable period.

Due to timing and/or funding constraints, site visits, surveys, and soil borings were not performed in order to develop this facility study.

All costs above represent good faith estimates in today’s dollars. Price escalation has not been included.

http://www.oatioasis.com/EES/EESDocs/INFO.htm


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SCOPE OF WORK

1.6. Jonesboro (APL) – Hergett (JCWL) 161kV Transmission Line, L-941: Upgrade from a capacity of 147MVA to at least 174MVA

Line Capacity MVA

Existing Line Rating 147

Required Line Rating (minimum) 174

Proposed Line Rating (based on equipment to be installed) 246

The following work is required:

General: From Jonesboro (APL), Line 941 is 336.4 MCM 26/7 ACSR conductor to the Hergett (JCWL) tap and continues with Line 836.1 with a 1534.0 MCM 42/19 ACAR conductor from the tap to Hergett (JCWL) Substation. The 10.4 mile 336.4 MCM line segment will be upgraded to 666 MCM ACSR conductor using concrete poles with a delta configuration. The 1534 MCM portion does not require upgrade.

Long Lead Material: Jonesboro (APL) – Hergett (JCWL) Quantity Material Description *Lead Time (weeks)

154,000 lbs 666 MCR ASCR Cable 20-22

60,000 ft Fiber optic shield wire 16-18

6,000 ft 7#7 Shield wire 13-17

78 Concrete structures 8-10

9 Steel Pole Structures 16-18

294 Insulator assemblies 10-12

* Lead time as of June 2010

Highway Crossing Permits

Highway Structure Location

US #63 #15 - #16

AR #226 #19 - #20

US #49 #27 - #28

AR #1 #48 - #49

AR #163 #47 - #58

AR #158 #82 - # 83

Right of Way: This line is being rebuilt on existing ROW. No additional ROW is required.

Permitting and Wetland Mitigation: Storm water pollution prevention permitting will be required.

Structures and Foundations: It is assumed that the 78 new tangent and slight angle structures will be single pole concrete structures. The 9 new large angle structures will be 3-pole steel guyed structures. The majority of the foundations will be directly embedded. However, twenty caissons are estimated due to the unavailability of a soils report.


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Conductor: The new conductor will be single 666 MCM ACSR Flamingo. The length of the rebuild is 10.4 circuit miles which will require 154,000 lbs of conductor.

Insulators: This rebuild requires 294 polymer insulators

Shield Wire: 6,000 feet of 7#7 shield wire and 60,000 feet of fiber optic shield wire (OPGW) are estimated.

Removals: o Remove 75 – H-frame wood pole structures o Remove 8 – 3 pole, guyed, angle structure o Remove 3 – 3 pole, guyed, dead end angle structures o Remove 10.4 miles of 3 phase 336kcm ACSR o Remove 10.4 miles of twin 3/8” HSG shield wire

Relay Settings: o A Relay Impact Study will be performed for this change to the line

conductor under this Work Order. Changes to the relay settings will be implemented at the affected substations as necessary.

1.7. Trumann – Trumann West (AECC) 161kV Transmission Line, L-941.2/836: Upgrade from a capacity of 147MVA to at least 155MVA

Line Capacity MVA

Existing Line Rating 147

Required Line Rating (minimum) 155

Proposed Line Rating (based on equipment to be installed) 246

The following work is required:

General: Line segment 941.2/836, Upgrade to at least 155MVA (556 Amps)

o The line consists of approximately 7 miles of wood H –frames and wood 3 pole structures. They will be replaced with single pole tangent structures and guyed 3 pole dead end and angle structures.

o This line crosses several State Highways. It also goes through a small neighborhood.

Long Lead Material: Trumann – Trumann West (AECC) Quantity Material Description *Lead Time (weeks)

98,000 lbs 666 MCR ASCR Cable 20-22

37,000 ft Fiber optic shield wire 16-18

72 Steel Pole Structures 16-18

324 Insulator assemblies 10-12

* Lead time as of June 2010


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Highway Crossing Permits Highway Structure Location

AR #463 #177 - #178

AR #63/#69 #145 - #146 - #147

Right of Way: The ROW exists for this line segment and no new ROW is expected. However, landowners will need to be notified prior to construction starting. The ROW primarily consists of farm land.

Right of Way Clearing: Minimum clearing may be required.

Permitting and Wetland Mitigation: Storm water pollution prevention permitting will be required. Highway crossing permits will be required for the following Highways AR State #463, AR State #63 & AR State #69. The intersection of highway 63 & 69 is a major intersection.

Structures and Foundations: o Install 72 Steel poles (60 structures) o All structures are assumed to be direct embedded (Running angles

and dead ends guyed)

Conductor: o Install 98klbs of 666MCM ACSR Flamingo conductor (7 circuit miles)

Insulators: o Install 324 Insulator assemblies

Shield Wire: o Install 7 miles of fiber optic shield wire (OPGW)

Removals: o Remove 54 – H-frame wood pole structures o Remove 4 – 3 pole, guyed, angle structure o Remove 2 – 3 pole, guyed, dead end angle structures o Remove 7 miles of 3 phase 336kcm ACSR o Remove 7 miles of 3/8” HSG shield wire

Task Specific Assumptions o Settings work required in conjunction with line upgrade.

Relay Settings: o A Relay Settings Study will be performed for this change to the line

conductor under this Work Order. Changes to the relay settings will be implemented at the affected substations as necessary.

1.8. Jonesboro (APL) 161kV Substation:

There is no equipment identified to be replaced at this substation.

1.9. Hergett (JCWL) 161kV Substation: No work identified



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1.10. Trumann 161kV Substation: No work identified


1.11. Trumann West (AECC) 161kV Substation: No work identified


COST

The ICT has reviewed and determined whether each required upgrade will be considered a Base Plan Upgrade or a Supplemental Upgrade. For more information on cost responsibility for Base Plan and Supplemental Upgrades, see Attachment T to Entergy’s OATT. The costs shown in the table include overheads and AFUDC, but do not include tax gross up. Entergy incurs a tax liability proportional to the amount of customer contributions. In addition to proposed project costs, the customer may be charged a “Tax gross-up” at applicable rates which are subject to change. Current rate of Tax gross-up for Arkansas is 27.35% and is not included in any of the estimates. AFUDC costs would not be applied for projects that are pre-paid by the customer.

Projected Costs

TOTAL Base Plan Supplemental Reference

Monette – Paragould 161kV Line Upgrade

2010-2012 Entergy CP

-- -- Section 1.2

Holland Bottoms Phase 1


-- -- Section 1.2

Parkin 161kV Substation


-- -- Section 1.2

Jonesboro (APL) – Hergett (JCWL) 161kV Line Upgrade


$7.6M*1 --

Section 4.1

Trumann – Trumann West (AECC) 161kV Line Upgrade

$4.6M -- $4.6M*1 #

Section 4.2

Total $12,200,000 $7,600,000 $4,600,000

*1 – The cost reflect the impact if this project were completed next year and has not been inflated to indicate costs five years in the future. The costs will be re-evaluated in the year the project is initiated for design. # This upgrade may be eligible to receive financial compensation payments for unused, excess capacity created.


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SCHEDULE

A detailed schedule will be prepared subsequent to customer approval to proceed with the project. Based on the Task duration schedules listed below, the overall project in-service date is projected to be 04/30/2018. The following are rough durations:

Task Name Proposed

Start Date

Proposed

ISD

Jonesboro (APL) – Hergett (JCWL) 161kV Line

Upgrade 02/2015 05/2017

Trumann – Trumann West (AECC) 161kV Line

Upgrade 02/2015 12/2017

Notes to Duration Schedules:

All construction work requiring outages will be performed during acceptable periods of system load flow, which most often is the off-peak load season. Line outages will be discussed with the SOC and TOC and the assumption is made that line outages will be executed as planned. However, last minute denial of outages by the SOC/TOC along with resulting schedule delay is possible.

Pre-existing scheduled line outages may prevent the commencement of work. Scheduled outages cannot be confirmed until a firm construction schedule is submitted.

Substation construction will be coordinated with the transmission line outages when possible.

Design and Construction resources are available when required.

Transmission Line and Substation projects will begin subsequent to Definition phase Project Execution Plan.

This schedule does not account for adverse weather conditions.

Schedule durations are high level estimates at this time. A detailed schedule will be prepared upon project approval.


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RISK ASSESSMENT Identify risk events that may impact cost and/or schedule during execution of the project.

List project risks

List contingency included in the project cost / schedule

Risk Comment Impact

Underground site issues (Pipelines, wells, containments)

Unknown underground factors will add mitigation costs and may impact schedule ***

Substation Site will require substantial site work

Site may be in flood plain, wetlands, Soil Contamination ***

Material transportation could affect cost/schedule

Large transformers(other equipment) may require special transport to substation site **

Material costs steel & Equipment

Rising steel, copper, fuel and other market conditions could greatly affect estimated cost. ****

Lay-down areas Cost to be determined during detailed scoping. *

Storm-water plan implementation

Best guess on SWPPP creation, implementation and monitoring can vary greatly dependant on outcome of environmental study. **

Weather & Equipment Lead Times (Transformer, Poles)

Unexpected delays on material lead times, unusually inclement weather will impact schedule but might impact AFUDC costs as well. **

Wetland mitigation Undetermined until environmental analysis is complete. ***

T-Line Route can change Estimate based on one route. Upon funding CCN may identify alternate route. ****

T-Line Structures Count can change Scope based on preliminary structure count. ***

Outages may not be available

Preliminary schedule only considers general outage constraints. Specific project schedule may be delayed by days, weeks or months dependant on system conditions. Delays of months = increased project costs. **

Scope based on design assumptions which may change Varied impact on cost and schedule. ***

*-low impact to cost, ** - moderate impact to cost, ***- high impact to cost, **** - very high impact to cost.


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CONFIRMED RESERVATIONS OASIS PSE MW Begin End

250778 (delist) Entergy Services, Inc. (EMO) 1 7/2/1998 7/1/2011

569011 Entergy Services, Inc. (EMO) 242 3/1/2000 1/1/2014


759294 East Texas Electric Cooperative 31 1/1/2001 1/1/2018

1096986 Tennessee Valley Authority 73 9/1/2003 9/1/2013

1099991 (renewal) City Water & Light, Jonesboro 83 1/1/2010 1/1/2016

1099997 (renewal) City Water & Light, Jonesboro 168 1/1/2010 1/1/2016










1309874 (renewal) East Texas Electric Cooperative 75 1/1/2009 1/1/2017



1328125 CLECO Power Marketing 35 1/1/2006 1/1/2011

1338849 Louisiana Energy & Power Authority 45 9/1/2005 9/1/2010

1356328 Muni Energy Agcy of Miss 40 6/1/2010 6/1/2040

1373643 City of Conway 25 3/1/2010 3/1/2040

1375299 Louisiana Generating LLC 11 3/1/2006 3/1/2013



1375559 CLECO Power LLC (Gen) 675 12/1/2006 12/1/2016

1380484 Osceola Light & Power 9 9/1/2009 9/1/2039

1381398 Constellation Energy Commodities Grp. 34 1/1/2006 1/1/2036




1383852 Arkansas Electric Cooperative Corp. 550 1/1/2007 1/1/2017


1385158 NRG Power Marketing 13 10/1/20070 10/1/2027

1387272 CLECO Power LLC (Gen) 11 4/1/2006 4/1/2016








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OASIS PSE MW Begin End

1442296 (renewal) NRG Power Marketing 103 1/1/2008 1/1/2011




1460876 Aquila Networks-MPS 75 3/1/2009 3/1/2029








1468113 Muni Energy Agcy of Miss 20 6/1/2011 6/1/2041

1470484 City of West Memphis 20 1/1/2011 1/1/2041


1472304 (renewal) South Miss Electric Power Assoc. 75 6/1/2009 6/1/2011

1472315 South Miss Electric Power Assoc. 100 6/1/2010 6/1/2011




1495910 Southwestern Electric 78 5/1/2010 5/1/2013


1498129 City of Conway 50 4/1/2012 4/1/2042







1514105 (delist) East Texas Electric Cooperative 1 1/1/2008 1/1/2017







1527816 Westar Energy 6 10/1/2007 10/1/2012

1530287 Empire District Electric 50 3/1/2010 3/1/2030

1530288 Empire District Electric 50 3/1/2010 3/1/2030

1543574 (renewal) Cargill Power Markets, LLC 103 1/1/2010 1/1/2011




1555122 (renewal) Constellation Energy Commodities Grp. 28 1/1/2009 1/1/2011

1555123 (renewal) Constellation Energy Commodities Grp. 22 1/1/2009 1/1/2011

1555124 (renewal) Constellation Energy Commodities 25 1/1/2009 1/1/2011


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Grp.







1564001 (renewal) Louisiana Energy & Power Authority 6 4/1/2009 4/1/2014




1585225 (renewal) City of Prescott 22 4/1/2009 4/1/2039





1598885 (renewal) Morgan Stanley Commodities Group 102 1/1/2009 1/1/2014

1598886 (renewal) Morgan Stanley Commodities Group 102 1/1/2009 1/1/2014



1601111 Constellation 5 1/1/2010 1/1/2015




1615102 (renewal) MidAmerican Energy, Inc. 50 1/1/2009 1/1/2014

1615103 MidAmerican Energy, Inc. 50 1/1/2009 1/1/2014










1632265 Merrill Lynch Commodities 1 4/1/2009 4/1/2014















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1648591 Entergy Services (SPO) 1 6/1/2010 6/1/2012


1655366 Missouri Joint Municipal 6 10/1/2009 10/1/2014



1658088 SMEPA 21 6/1/2012 6/1/2042


1665168 (renewal) Merrill Lynch Commodities 60 11/1/2009 11/1/2014




1665899 Ameren Energy, Inc. 75 9/1/2009 9/1/2014










1685869 (renewal) Muni Energy Agcy of Miss 19 1/1/2010 1/1/2018

1689499 Missouri Joint Municipal 3 9/1/2009 9/1/2014



1692555 American Electric Power 45 9/1/2000 1/1/2011

1692557 American Electric Power 6 9/1/2000 1/1/2011



73454527 Hope Water & Light 10 10/1/2009 10/1/2032

73457918 South Miss Electric Power Assoc. 180 10/1/2009 10/1/2014


73573797 (renewal) American Electric Power 45 1/1/2011 1/1/2029

73586299 (renewal) American Electric Power 6 1/1/2011 1/1/2029





73741113 (renewal) Entergy Services, Inc. (EMO) 150 5/1/2010 5/1/2020

73741122 (renewal) Entergy Services, Inc. (EMO) 135 5/1/2010 5/1/2020



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Pre-888 Transactions OASIS # PSE MW Begin End








































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STUDY QUEUE

OASIS # PSE MW Begin End



ATTACHMENTS

A. Table of Acronyms

ACSR Aluminum Conductor Steel Reinforced ACSS Aluminum Conductor Steel Supported ADEQ Arkansas Department of Environmental Quality AFUDC Allowance for Funds Used During Construction ATC Available Transfer Capability EES Entergy Control Area EHV Extra-High Voltage ICT Independent Coordinator of Transmission kV Kilo-Volt MCM (M) Thousand Circular Mils MVA Mega-Volt Amp MW Mega-Watt NPDES National Pollution Discharge Elimination System NOI Notice of Intent OASIS Online Access and Same-time Information System OATT Open Access Transmission Tariff OG&E Oklahoma Gas & Electric POD Point of Delivery POR Point of Receipt SES Steam Electric Station SOC System Operations Center SHPO Arkansas State Historic Preservation Office SHV Super High Voltage SW Switch Station SWEPCO Southwest Electric Power Company TOC Transmission Operations Center WMUC City of West Memphis Control Area


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B. Scope Summary Diagram / Area Map


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C. One Line Drawings

Jonesboro (APL) 161kV Substation


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Hergett (JCWL) 161kV Substation


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Trumann 161kV Substation


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Trumann West (AECC) 161kV Substation


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D. Duration Schedule

west memphis facilty study for trasmission service · 2010. 12. 15. · this upgrade may be...

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