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