Sea Breeze Pacific Sea Breeze Pacific Regional Transmission System Regional Transmission System Juan de Fuca Cable Juan de Fuca Cable & & West Coast Cable West Coast Cable Keys to West Coast Keys to West Coast Transmission Progress Transmission Progress
Juan de Fuca Cable & West Coast Cable Keys to West Coast Transmission Progress. Sea Breeze Pacific Regional Transmission System. BCTC system studies - Feasibility Completed - Combined Interconnection and Facilities studies agreement In negotiation - PowerPoint PPT Presentation
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Sea Breeze PacificSea Breeze PacificRegional Transmission SystemRegional Transmission System
Juan de Fuca CableJuan de Fuca Cable&&
West Coast CableWest Coast Cable
Keys to West Coast Keys to West Coast Transmission ProgressTransmission Progress
BCTC system studiesBCTC system studies - Feasibility - Feasibility CompletedCompleted- Combined Interconnection- Combined Interconnection and Facilities studies agreement and Facilities studies agreement In negotiation In negotiation
BPA system studiesBPA system studies - Feasibility - Feasibility CompletedCompleted- Interconnection- Interconnection CompletedCompleted- Facilities- Facilities CompletedCompleted
WECC Path Rating ProcessWECC Path Rating Process- Phase II Target Date - Phase II Target Date Q2 - 2007 Q2 - 2007
Electrical System StudiesElectrical System Studies
• Blaine Intertie: Increased Headroom (~300MW)
• Vancouver Island: Improved Reliability
• British Columbia:
• Washington “I-5” Utilities:
Improved Access to Market
• Regional Benefits: Deferred Capital Expenditures(e.g. Monroe-Echo Lake $400M)
Relieved Congestion/ Downstream Benefits Return
• Olympic Peninsula: Improved Reliability
Anticipated System Benefits
Access to Canadian Access to Canadian RenewablesRenewables
Preliminary Plan of Service WCCPreliminary Plan of Service WCC
• Basic Components of WCC Basic Components of WCC – 1600 MW converter station 1600 MW converter station
at BPA’s Allston at BPA’s Allston Substation.Substation.
– 2-650 mile undersea DC 2-650 mile undersea DC cables (1 per pole)cables (1 per pole)
• Upgrades North of AllstonUpgrades North of Allston• Rough Cost: $1.9 - 2.3 Rough Cost: $1.9 - 2.3
Billion, plus the cost of Billion, plus the cost of upgrades north of Allstonupgrades north of Allston
OLINDA
OLYMPIA
FAIRMONT
RAVER
MONROE
INGLEDOW
PAUL
OSTRANDER
MARION
MALIN
TRACY
GRIZZLY
JOHN DAY
HANFORD
BELL
COULEE
NICOLA
PEACE RIVER
FORT MCMURRAY
LANGDON
GARRISON
MIDPOINT
MICA
REVELSTOKE
SELKIRK
ASHE
TAFT
BIG EDDY
TESLA
MCNARY
MERIDIAN
KELLY LAKE
SITE C
KITIMAT
DUNSMUIR
BORAH
CHEEKYE
CRANBROOK
SUMMER LAKE
ROUND BUTTE
TO SYLMAR
TO LAS VEGAS
EDMONTON
SF AREA
ALLSTON DWORSHAK
ROUND MOUNTAIN
SCHULTZ
ALVEY
WILLISTON
VASEUX LK
TOWNSEND
Figure 1: West Coast Cable HVDC Project
WCC HVDC
Olympic Peninsula Reinforcements
Juan de Fuca HVDC
Terminating OVHD HVDC with Large VSC InvertersTerminating OVHD HVDC with Large VSC Inverters
HVDC InverterLimitations on recovery rate from ac faults
due to inverter voltage stabilityLimitations on power rating due to system
strengthReactive power constraints
Momentary interruption of power flow due to ac fault induced CF at inverter
HVDC Light InverterImproved voltage stability
Less limitations on inverter rating, recovery rate and system strength
Improved multiple-infeed performanceNo reactive power constraintsDistributed inverters to reduce
interconnection requirements
Photo courtesy of ABBPhoto courtesy of ABB
State-of-the-art enhancement of well proven HVDC transmission technology
West Coast Cable ProjectWest Coast Cable Project
We expect both the JdF and West Coast Cable Projects to provide significant benefits to the electrical system in the Puget Sound area and the larger Northwestern Region, as well as access to coastal BC renewable resources.
We expect both the JdF and West Coast Cable Projects to provide significant benefits to the electrical system in the Puget Sound area and the larger Northwestern Region, as well as access to coastal BC renewable resources.