02b_NPPD SPP Sub-Reg2.2010.Pres.NPPD

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SPP Sub-Regional Planning Meeting
Local Area 2
August 3, 2010
Nebraska Public Power District
Randy Lindstrom
Transmission Planning Supervisor
Nebraska Public Power District
• Political Subdivision of the State
• Governed by popularly elected Board of
Directors
• Charter Territory in 91 of State’s 93
counties
• Serve Wholesale requirements for 77
municipalities and PPDs
• Also serve 88,000 customers at Retail
Nebraska Public Power District
• Peak load 2670 MW
• Heavy summer irrigation load
• Accredited generation capacity 3150 MW
• 4400 miles transmission line
- 115kV, 230kV, & 345 kV
• 750 miles subtransmission 34.5kV & 69kV
Major Transmission Projects &
Plans
• Twin Church / South Sioux City Area
• Broken Bow Wind Generation
• Petersburg Wind Generation
• Keystone XL Pipeline Projects
• Axtell – Spearville 345 kV Project
Twin Church / South Sioux City Area

Explosive Load Growth Due to Industrial Plant Expansions
and Many New Industrial Plants Being Developed

Continued Conversion Of Irrigation Wells From Diesel to
Electric Power

SubTransmission Capacity No Longer Able To Serve And
Back up The New Projected Loads In This Area

Single Contingency Voltage & Thermal Violations On The
Transmission System
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Twin Church / South Sioux City Area
Transmission Expansion Plan

Build Two New 115 kV Transmission Lines From Twin Church
Substation to New South Sioux City Substation Forming a
115 kV Ring Configuration Around the City

Build New South Sioux City 115/69 kV Substation And Shift
Load From Twin Church to New Substation

Re-Build Twin Church 115 kV Substation To A Breaker-and-ahalf Configuration To Accommodate New 115 kV Expansion

If Loads Continue To Grow, Future Plans Are To Build A New
Homer 345/115 kV Substation And Two New 115 kV Lines
To South Sioux City And Emerson
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Twin Church / South Sioux City Plan
Broken Bow Wind Project
 80 MW wind generation project near Broken Bow
 Radial 115 kV transmission to connect wind to existing
Broken Bow 115 kV substation (9 Miles)
 RFP awarded, PPA & LGIA being negotiated
 Other GI Interconnection / Network Upgrades
 Substation Modifications at Broken Bow and Callaway.
 230/115 kV Transformer Upgrade at Canaday.
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Bloomfield
9
Petersburg Wind Project
 80 MW Wind Generation Project Near Petersburg
 Radial 115 kV Transmission to Connect Wind to New
Petersburg North 115 kV Substation
 PPA and LGIA Signed
 Project Is Under Construction, In-Service December 2010
 Other GI Interconnection / Network Upgrades
 Construct New Petersburg North Substation
 Substation Modifications at Neligh and Albion
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Bloomfield
Petersburg
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Q3 2012
Q4 2009
Q4 2010
12
125
Keystone XL Phase 2 Oil Pipeline
•  1900 miles of new Crude Oil Pipeline From
Hardisty, Canada to Gulf of Mexico Refineries
– Five Pumping Stations in NPPD service Territory
• 116 MW New Incremental Load (Five pumping stations
@22.4 MW each and one 4 MW tank farm)
»
»
»
»
»
Pump Station 22 – 10 miles south of Stuart, NE
Pump Station 23 – Near the town of Ericson, NE
Pump Station 24 – 9 miles north of Central City, NE
Pump Station 25 – 14 miles southeast of McCool , NE
Pump Station 26 – Near the town of Steele City, NE
Pump Station 22 (PS 22 or Stuart South)
• Issues
– Severe voltage depression/voltage collapse for N-1
Contingencies in this area
• Transmission Plan
– 28 Miles of New 115 kV Radial Transmission Line From
O’Neill 115 kV to PS22
– Add an 18 MVAR 115 kV Cap Bank at O’Neill
– Add a 9 MVAR 69 kV Cap Bank at O’Neill
– Expand Ainsworth Cap Bank to 15 MVAR
– Add 15 MVAR Capacitor Banks at PS 22
Pump Station 22 cont.
Pump Station 23 (Ericson)
• Issues
– Several N-1 Contingencies caused voltage and
thermal violations
• Transmission Plan
– 37 Miles of New 115 kV Radial Transmission Line
From Petersburg 115 kV to PS23 (Ericson)
– New 15 MVAR Cap Bank at Petersburg
– New 6 MVAR Cap Bank at Ericson
Pump Station 23 (Ericson) cont.
Pump Station 24 (PS 24 or Central City North)
• Issues
– N-1 Contingencies Result in Voltage Violations at
Central City 115 kV
• Transmission Plan
– Construct New Clarks 115 kV Substation
– Build 9 Miles New Radial 115 kV Transmission Line
From Clarks to PS24
– Add 18 MVAR 115 kV Capacitor Bank at Clarks
Pump Station 24 cont.
Pump Station 25 (McCool)
• Issues
– Overload Existing McCool 115/34.5 kV 56 MVA
Transformer
• Sub-transmission Plan
– Convert 34.5 kV to 69 kV and Replace 56 MVA
Transformer With a New 115/69 kV 70 MVA
Transformer
Pump Station 25 (McCool) cont.
Pump Station 26 (Steele City)
• Issues
– N-1 Contingencies Cause Voltage Violations &
Thermal Overloads of Beatrice – Harbine 115 kV
• Transmission Plans
– Build New Harbine - Steele City – Knob Hill 115 kV
Interconnection With Westar
– Future Re-Conductor of Beatrice – Harbine 115 kV
(2021)
Pump Station 26 (Steele City) cont.
Keystone XL Phase 2 Plan Summary
•  76 Miles of New 115 kV line
–
–
–
–
O’Neill – PS 22 115 kV (28 miles)
Petersburg – Ericson 115 kV (37 miles)
Clarks – PS 24 115 kV (9 miles)
Steele City – Knob Hill 115 kV (2 miles for Nebraska section)
• 87 MVAR of New Capacitive Injection
–
–
–
–
–
–
Ainsworth – 6 MVAR
O’Neill – 27 MVAR
PS 22 – 15 MVAR
Petersburg – 15 MVAR
Ericson – 6 MVAR
Clarks – 18 MVAR
Axtell – Spearville 345 kV Project
 SPP Balanced Portfolio Project
 Focused On Relieving Congestion On The Western
Nebraska – Western Kansas Flowgate
 Provides For Interconnection Of New Wind Generation
 Total Of 226 Miles Of New 345 kV Line From Axtell –
Post Rock – Spearville
 NPPD Notice To Construct 53 Miles From Axtell to The
State Line
 In-Service Date June 2013
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spp.org
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Questions ?
For Additional Information, Contact:
Randy Lindstrom
[email protected] or 402-563-5240
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