Transmission Planning in the West pocket guide This reference guide is intended to assist individuals new to transmission planning in the Western Interconnection in understanding: 1) how transmission plans are inter-related, 2) who are the groups forming the plans, and 3) where stakeholders might want to participate in the Regional Transmission Expansion Plan. The intent is to provide information graphically and at a introductory level, and, therefore, is not intended to be a complete guide. For more detailed information, please refer to the TEPPC Protocol. Place holder for a really cool graphic or picture to capture the message DRAFT Ver 3a May 12,2011
Transcript
Transmission Planning in the Westpocket guideThis reference guide is intended to assist individuals new to transmission planning in the Western Interconnection in understanding:
1) how transmission plans are inter-related, 2) who are the groups forming the plans, and3) where stakeholders might want to
participatein the Regional Transmission Expansion Plan.
The intent is to provide information graphically and at a introductory level, and, therefore, is not intended to be a complete guide. For more detailed information, please refer to the TEPPC Protocol.TEPPC Protocol Link
Place holder for a really cool graphic or picture to capture the message
Subregional Planning Group Coordination Group (SCG)
BCCPG
AESO
ColumbiaGrid
WestConnect
SWAT Seirra CCPG
CTPG
CAISO
WECC
PCC
TSS LRS RS JSIS
TEPPC
TAS SPSG SCG
The transmission planning entities work together to develop a robust transmission system. Each group is responsible for informing the other process. The flow of information is both a bottoms-up process and a top-down process. The results of each transmission plan is incorporated as an input into another transmission plan. The transmission providers inform the SPG transmission plan which in turns informs the WECC process. The WECC process and reports should inform the SPG and the transmission providers where further detailed analysis is required.
Transmission Planning Process
Who’s Who in Transmission Planning
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10-year Plans
10-year Plans
20-year Plans
10-year Plans
5-year Plans
Bott
om U
p Ap
proa
ch
Top-Dow
n Approach
TP TP TP TP TP TP TP TP TP
SPG SPG
Customers
SPG
WECCTEPPC/PCC
SCG Collaboration
SPG Charter/Agreement
FERC 890 Attachment K
TEPPC ProtocolSPG – Subregional Planning Group TP – Transmission Provider
ITD – Independent Transmission Developer
ITD
ITD
ITD
WECC membership &
TEPPC Protocol
ITD
Sta
keho
lder
s
Scale Matters
• High Level with specific detail to WECC paths• Feasibility• Path Flows• Areas of Interest
RegionalHigh Level Analyses with specific detail to
WECC paths
• Selected area of granularity• Transfer capabilities• High level reliability, stability and
short circuit analyses• May perform production cost
modeling• Utilized to assist meeting NERC,
WECC and FERC 890 principles
Sub-regional Granular Analyses to the interconnection of sub-
regions
• Highly detailed Analyses• In-depth reliability, stability & short circuit
analyses• Ultimate responsible to NERC, WECC and FERC
890 principles
LocalVery Granular Area
Analyses
Transmission plans are produced at a variety of different scales (level of detail) depending on the scope and region being studied. Local studies, typically prepared by transmission owners and operators, are highly detailed reports that evaluate the system with respect to their local load serving area. The analysis will include detailed reliability studies to validate compliance with National (NERC) and Regional (WECC) reliability standards and criteria. The subregional analysis compiles the local entities information into one plan. These studies may evaluate transfer capabilities between parties and assess the reliability with respect to the larger interconnect networks. The basis of the study is to gain enough granularities to validate the local system improvements do not negatively impact the larger subregional boundary. The local or subregional studies may also review any requests for facilities required by the FERC 890 standards. The regional processes study both reliability and economic transmission models. These are to identify areas of interest and perform system assessments for project feasibility and identify fatal flaws. The studies at the regional area do not produce detailed enough analysis to build transmission. Regional studies may identify areas that should be analyzed in more detail at the subregional or local area.
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q TEPPC (SWG)Transmission Network generation to meet RPS standardsReserve requirementsLocation of new generationGeneration types & location (generic)
q TEPPC (DWG/MWG)Technology generation characteristicsGeneration operating limitsOther technical details specific to generationHydo modeling characteristics
q TEPPC (SPSG)20-year generation scenarios
q VGSIntegration issues for variable resources
q WGA/SPSCNational Labs on water consumptionPolicy driven resource scenario options
Generation
q TEPPC (SWG)Transmission Network decisions for Production Cost ModelCommon case transmission elements
q TEPPC (DWG/MWG)DC transmission line modeling characteristics
q PCCPower Flow transmission network for reliability and stability
q SCGFoundational and Potential transmission assumptions
q TEPPC (HWG)Analyzes historical utilization of transmission lines
TRANSMISSION
q TEPPC (SWG)Receives loads from PCC LRSAdjust loads from reference case per study request (if necessary)
q PCC (LRS)Loads from the Transmission Providers & LSE for reliability Power Flows
q WGA/SPSCSPSC DSM workgroup for state adjusted load forecastSPSC energy efficiency issues
Loads
Costs
q TEPPC (SWG)Generation Capital costsTransmission Capital CostsVariable Production Costs
All stakeholder input is important to add credibility and validity to the transmission planning models. The input assumptions are based on specific workgroups. Find what your specialty is and get involved in that group.
