La crosse 161 kv capacitor addition
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La Crosse 161 kV Capacitor Addition. Northern MAPP Subregional Planning Group April 3, 2007 Daniel Kline. Outline. Area System Deficiencies Planned Project Next Steps. Area System Deficiencies.

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La Crosse 161 kV Capacitor Addition

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La crosse 161 kv capacitor addition

La Crosse 161 kV Capacitor Addition

Northern MAPP Subregional Planning Group

April 3, 2007

Daniel Kline


Outline

Outline

  • Area System Deficiencies

  • Planned Project

  • Next Steps


Area system deficiencies

Area System Deficiencies

  • Summer 2008, at least 50 MVAR of capacitors are needed at La Crosse with Genoa 3 offline, French Island offline, and Alma – Marshland out

    • Must sustain 0.95 pu voltage at French Island 69 kV bus

    • French Island startup issues

  • In 2011, necessary capacitance increases to 110 MVAR


Area system deficiencies1

Area System Deficiencies

  • Capacitance also needed at Monroe County Substation

  • Outage of La Crosse – Monroe County 161 kV line causes low voltage at Monroe County in 2011.


Planned project

Planned Project

  • Install two 60 MVAR capacitor banks at La Crosse Substation

  • Temporary solution until CapX line is in service

    • Will provide reliable source of power

    • Decrease reliance upon area 161 kV lines

  • Considering placing one of the banks at Monroe County Substation

    • 161 kV tie strong enough to supply enough support to French Island

    • Would support Monroe County in case of outage of La Crosse – Monroe County 161 kV line


Wisconsin study update eau claire and new richmond

Wisconsin Study Update Eau Claire and New Richmond

Northern MAPP Subregional Planning Group

April 3, 2007

Daniel Kline


Outline1

Outline

  • New Richmond Area

    • Various Load Serving Problems

    • Update on Progress Since Last Presentation

  • Eau Claire Area

    • Various Load Serving Problems

    • Update on Progress Since Last Presentation

  • Next Steps

  • Questions


New richmond area

New Richmond Area


Description of area

Description of Area

  • Located in Western Wisconsin

    • St. Croix County

    • Just across Minnesota border, near I-94

  • Area fed by 161 kV sources and 69 kV subtransmission

  • Load belonging to NSPW and DPC

  • Lines belonging toNSPW and DPC


Description of area1

Load Area

2008

2011

2016

New Richmond

45.4 MW

53.1 MW

63.7 MW

DPC N-60

46.0 MW

52.0 MW

63.1 MW

Total

91.4 MW

105.1 MW

126.8 MW

Description of Area

  • Two distinct load-serving areas

    • New Richmond

    • Somerset, Osceola

  • Load Growth:

  • Total load growth of over 30 MVA in 8 year period from 2008 to 2016

  • Bedroom communities for Twin Cities growth


Area system deficiencies2

St. Croix Falls

Apple River

Sand Lake

Lk. Camelia

Bear Trap

Griffin St.

Osceola

Farmington

Clear Lake

New Richmond

Houlton

Roberts

Pine Lake

Kinnickinnic

Willow River

Rush River

Troy

Crystal Cave

Area System Deficiencies

  • New Richmond Voltage

  • Osceola Voltage

  • Autonomy of 69 kV lines from Pine Lake

  • Chisago – Apple River Construction


Description of area2

Description of Area


Description of problems

Description of Problems

  • Low voltage at New Richmond during outage of Pine Lake – New Richmond 69 kV line

  • Low voltage at Osceola during outage of Osceola – Osceola Tap 69 kV line

  • Overload of River Falls 115/69 kV transformer during outage of Osceola – Osceola Tap 69 kV line

  • Overload of Pine Lake 161/115 kV transformer during outage of King – Willow River 115 kV line

  • Normal Overload of Pine Lake – Rush River 69 kV line


Description of problems1

Description of Problems

  • High load growth throughout area

  • Installation of Chisago Line Project will require extended outage of Osceola – Osceola Tap 69 kV line

  • No room for expansion at New Richmond Substation

  • No room for expansion at Rush River Substation


Project plan

Project Plan

  • Multiple Independent Projects to work together

    • 10 MVAR Cap Bank at New Richmond – Under Construction

    • Three Lakes Substation – June 2009

    • 5.4 MVAR Cap Bank at Osceola – June 2009

    • Relocate Rush River Substation and cut over to 161 kV – June 2009

    • Rebuild Osceola to Sand Lake 69 kV Line – June 2009

    • Construct Somerset Sub – June 2010

    • Construct Stanton Sub – December 31, 2010

    • Construct Somerset to Stanton 69 kV Line – May 31, 2011

    • Complete installation of Chisago Line Project – May 31, 2011

    • Construct Poplar Lake Sub & 161/69 kV Transformer – May 31, 2011


Planned projects

St. Croix Falls

Apple River

Sand Lake

Lk. Camelia

Bear Trap

Griffin St.

Osceola

Farmington

Clear Lake

Somerset

Substation

Stanton

Substation

New Richmond

Three Lakes

Substation

Houlton

Roberts

Pine Lake

Kinnickinnic

Willow River

Rush River

Troy

Crystal Cave

Planned Projects

  • Three Lakes Substation

  • Planned Somerset Substation

  • Stanton 69 kV Switching Station

  • Somerset to Stanton 69 kV Line


Where are we now

Where Are We Now?

  • Projects have been through internal review process

  • Budget process for 2008-2012 is underway

  • Anticipate permitting and material procurement underway in 2008

  • First stages of completion in 2009, finishing in 2010


Next steps

Next Steps

  • Coordination work for Wisconsin CPCN filing

  • External coordination for necessary interconnections

  • Working with DPC to determine ownership model for Poplar Lake Substation


Eau claire area

Eau Claire Area


Description of area3

Description of Area

  • Located in West-Central Wisconsin

    • Eau Claire & Chippewa Counties

    • About an hour east of Twin Cities on I-94

  • Area fed by 345 and 161 kV sources and 69 kV transmission

  • Load belonging to NSPW and DPC

  • Lines belonging toNSPW and DPC


Description of area4

Load Area

2008

2010

2012

2014

2016

Chippewa Falls

84.9 MW

88.2 MW

91.5 MW

94.9 MW

98.2 MW

Eau Claire

232.0 MW

240.6 MW

250.1 MW

259.5 MW

269.3 MW

Total

316.9 MW

328.8 MW

341.6 MW

354.4 MW

367.5 MW

Description of Area

  • Two distinct load-serving areas

    • Eau Claire

    • Chippewa Falls

  • Load Growth:

  • Total load growth of over 50 MVA in 8 year period from 2008 to 2016


Description of area5

Description of Area

Hydro Lane

Wissota

DPC

Elk Mound

Wheaton

Jeffers

Road

Eau Claire

Seven Mile


Description of area6

Description of Area


Description of problems2

Description of Problems

  • Eau Claire transmission system is designed to rely upon Eau Claire 69 kV bus

  • Eau Claire 161/69 kV transformers are heavily loaded and cannot endure loss of parallel bank

  • Eau Claire substation is crowded and not enough space exists to increase the size of the existing 161/69 kV banks

  • Increasing size of banks would require moving to non-standard bank sizes


Description of problems3

Description of Problems

  • During peak load conditions, 69 kV system to north overloads

  • DPC system served out of Seven Mile overloads for various contingencies

  • High load growth throughout area

  • Interconnection requests at Hallie Substation requrie auto-transfer scheme to be turned off

  • Area transmission system highly susceptible to fluctuations in Chippewa River generation


Final recommendation

Final Recommendation

  • Re-terminate Wheaton to Presto Tap 161 kV line at Eau Claire Substation

  • Replace existing Eau Claire – Hydro Lane 69 kV double-circuit line with single-circuit 161 kV line

  • Construct 161/69 kV substation (50th Avenue Substation) where double-circuit 69 kV line intersects Hydro Lane – Red Cedar 161 kV line

  • Construct single circuit 161 kV line from Eau Claire to 50th Avenue Substation

  • Convert Hallie Substation to 161 kV operation

  • Construct second circuit from Wheaton Tap to Wheaton to avoid parallel three-terminal lines


Near term plans

Hydro Lane

Wissota

DPC

Elk Mound

Wheaton

Jeffers

Road

Eau Claire

Seven Mile

Near-Term Plans

  • Eau Claire – Hydro Lane Conversion

  • DPC East Hallie


Where are we now1

Where Are We Now?

  • Projects have been through internal review process

  • Budget process for 2008-2012 is underway

  • Anticipate permitting and material procurement underway in 2008

  • First stages of completion in 2009, final project completion in 2011


Next steps1

Next Steps

  • Coordination work for Wisconsin CPCN filing

  • Working with DPC on long-term plan for Eau Claire Area – to begin summer 2007

    • Potential for one or two new 161/69 kV substations in Eau Claire area to provide additional voltage support and off-loading of Eau Claire Substation 69 kV bus


Initial ideas

Initial Ideas

  • Options investigated with and without Chisago project

  • Necessity of Poplar Lake Substation and 161/69 kV transformer investigated


Questions

Questions?


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