visibility 10/1/2007. 2 agenda visibility overview status –wecc –columbiagrid issues preliminary...
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Visibility
10/1/2007
2
Agenda
• Visibility Overview
• Status– WECC– ColumbiaGrid
• Issues
• Preliminary Thoughts Regarding Conclusions and Recommendations
• Next Steps
Visibility Overview
4
Model AreaModel Area
Actual WECC System
WECC Planning Model
SE Model
Network equivalence
WECC substationsNot in WECC planning model
Future Model
5
WSM Project
6
Stage 1 – Operational Network Model
RMRC(WAPA)
CMRC(PG&E)
PNSC(BPA)
WECC MergedOperational
Model
NetworkValidation
PowerFlow
OnlineDisplay
7
Stage 2 – SCADA & SE
WECC OperationalNetwork Model
WECC SCADA Model
State EstimatorSystem
SCADASystem
WECC ICCP Model ICCPSystem
WECCWON
8
Stage 3 – WECC Customization
• State Estimator Customs
• Remedial Action Schemes
• PowerTech Applications–TSAT – Transient Stability
–VSAT – Voltage Stability
9
System Model Objective
• WSM is the heart for system reliability. It will be used for estimating the system states and evaluating the system reliability.
• WSM is also going to be used for operation and system planning studies.
• Model needs to be accurate as much as possible. Most of the variance currently present need to be cleaned up.
• Proper tools, methodology, process and resources need to be identified to maintain the quality and accuracy of the model.
Results will be as good as the model
10
WSM Possible Users
• WSM Provides Common Network Model for– Reliability Entities (RE) – Planning Entities (PEs) – Reliability Coordinators (RCs) – Balancing Authorities (BAs)– Planning Authorities– Transmission Operators – Resource Planners – Standards Developers
11
Status – WECC Schedule
• Phase 1 – 1st Qtr 2008 (est 4th Qtr 2008)
• Phase 2 – est. 2009 (????)
• Phase 3 – est. 2010 (????)
Stage 1Stage 1
Stage 2
Q42006
Q12007
Q22007
Q32007
Q42007
Q12008
Q22008
Stage 3
12
Status – ColumbiaGrid Activities
• Signed - Development and Staffing Reliability Functional Agreement
• Appointed Norm, Darrell, Ramu to support these activities
13
Overview of Agreement - Visibility Enhancements
• CG will assist in Western Interconnection-wide and region-wide efforts to enhance the visibility for
– Reliability Coordinators– Transmission Operators/Owners
• Assist WECC’s in the development, testing, implementation and maintenance of
– West-wide Model– Similar tools
• Recommend to Reliability Parties regarding workable Visibility tools for their respective Transmission Systems and the Regional Interconnected System.
• Deliverables– Establish presence in certain reliability forums– Gain experience and knowledge– Develop recommendations regarding future actions of parties, including
potential roles for ColumbiaGrid– Publish interim recommendation (Date ??/??/??)
14
Visibility Enhancements Issues…….
• We need to identify approaches for following issues– Currently there is a clear plan how WSM is going to be used by WECC but not by
members.– 3 different bus names (Need cross reference)
• West Wide Model• Operation• Planning
– Utilities need to come up with a method to synchronize their model with West Wide Model on the ongoing basis (Planning and operation)
– Need to merge the model below 100 KV and validate– Additional tools are required to develop a planning model from the network model.– Model differences in operation and planning (Multi section lines, transformers, DC
lines……….)– Currently data maintenance process between planning and operation has lot of gaps.– Few members are performing operation studies. Others need to perform operation
studies based on current operating conditions to optimize the system and meet system reliability. (Next hour, next day and week)
– Bus and node orient model issues– Need to identify the software licenses provided by AREVA for CG members
15
Visibility Enhancements Issues……. (Cont.,)
• Equipment Model Issues & variables– Modeling methods are not consistence– Generators (Hydro, Thermal, Water level, temperature…..)
• MW limits• MVAR limits
– Transformers (Tap, impedance, model…)– Line data – Line connected shunts– Multi section lines– Shunts (Value, Base KV, no of shunts, location)– DC Line modeling– Load– Sub transmission modeling & Equivalent model
• Data quality need to be validated
Preliminary Thoughts regarding Conclusions and
Recommendations
17
Visibility Enhancements West-wide Model Initial
Development
BPA CAISO
WAPA
MergedWSM100 KV and above
Validate
InitialWSM
18
Visibility Enhancements West-wide Model Maintenance
OnlineModel
NewModel
WECCValidate
UpdateToCurrent Model
Every2 weeks
19
Visibility Enhancements West-wide Model - Planning
DumpProcessWSM
CIM/GE/PTI
Add Lower KV model
ValidateAdd FutureEquipments
Validate PlanningModel
20
Next Steps
• Identify how GC members can use the WSM model – Identify gaps
• Identify the process to cleanup, test and maintain the WSM
• Establish presence in certain reliability forums• GC Gain experience and knowledge• Develop recommendations regarding future
actions of parties, including potential roles for ColumbiaGrid
• Publish interim recommendation
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