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Increasing Access to the Grid
NIPPCSeptember 8, 2005
Brian SilversteinBrian SilversteinVP, Operations and PlanningVP, Operations and PlanningBonneville Power AdministrationBonneville Power Administration
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Increasing Access to the Grid
Expand the Pie
Increase Utilization
Coordinated Planning
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4
2001: Network Constraints
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Infrastructure Program
To address the region’s transmission needs, BPA developed a transmission infrastructure program in 2001 to focus on: Maintaining reliable transmission service to
population centers. Restoring or enhancing transfer capability across
key paths. Providing margin so the system can be
maintained. Evaluating and investing in non-wires alternatives.
6
Infrastructure Accomplishments
First major line construction in the Northwest since 1987.
Invested more than $1 billion over four years. Two 500-kV lines completed, one under way. Modernized the nation's largest direct current
terminal (Celilo Converter - 3100 MW). Several projects to upgrade local load service.
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M o n t a n a
I d a h oO r e g o n
W a s h i n g t o nGrand Coulee-Bell 500 KVTransmission Line ProjectApril 2003-Dec 2004
Northern IdahoReinforcement
Schultz Series CapacitorsMarch 2003-Nov 2004
PearlTransformer
ProjectDec 2002-Dec 2003
OlympicPeninsula
Reinforcement
1-5 CorridorGeneration Addition
Kangley-Echo Lake 500 KVTransmission Line ProjectJuly 2003-Dec 2003
Puget Sound Area500/230 KV
Transformer
Schultz-Hanford Area
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SW WashingtonNW Oregon Reinforcement Portland Area
Reinforcement
Swan ValleyGoshen Rebuild
Lower ValleyReinforcement
Anderson RanchMountain Home RebuildSouthwest Oregon
Coast Reinforcement
AlbanyEugeneRebuild
Celilo ModernizationWinter 2001-June 2004
West of McnaryWest of Slatt
Raymond-Cos
Status of BPA Infrastructure Additions
CompletedUnderwaySubstationProject Completed
BPATransmission Lines
IndianReservation
On HoldProposedSubstationProject Completed
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2005: Network Constraints
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Non Wires Solutions
Potential Measures Demand response Energy efficiency Distributed generation Appropriately sited large generation
Objectives Find least-cost solutions to transmission limitations Provide equivalent reliability to a transmission fix Benefits of transmission deferral
Time value of money Option value of delaying costly investments
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Path Utilization Example
Cumulative Frequency Distribution2001- 2005 Jul-Oct Heavy Load Hours Only
West of McNary
0
500
1000
1500
2000
2500
0% 20% 40% 60% 80% 100%
PERCENT OF TIME LOADINGS AT OR ABOVE MW VALUE
MW
Jul-Oct
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Increase Utilization
Flow-based ATC methodology Constraint Schedule Management New products and services
Conditional firm Redispatch
Better remarketing of unused rights Strategic use of nonfirm and short-term firm
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Transmission Buying Strategy for Wind
0
25
50
75
100
Traditional Strategic
MW
Nonfirm
ST Firm
LT Firm
Average Output
Peak Output
Sel
l W
hen
No
t N
eede
d
Bu
y W
hen
Nee
ded
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Integrated Planning Concept
Objective: Achieve an adequate and least-cost plan in a functionally separated industry.
Premise: Most commitments to long-term transmission, particularly those that require expansion, are tied to utility power purchase agreements.
Concept: Establish a coordinated planning cycle that links individual utility resource planning with a region-wide transmission open season.
Benefits: Improves our ability to develop transmission when needed. Provides for a regional adequacy assessment.
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Integrated Planning Concept
Start/Finish
ResourcePlanning
TransmissionPlanning
Integrated Txm Plan
TxmCommitments
TxmOpen
Season
RegionalAdequacy
Assessment
IRP
RFP
Utility Resource
Plan
Locational E
xpansion Costs