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1 Sept 9, 2010
AEP Use of the CIM in ERCOTAEP Use of the CIM in ERCOT
Jim JacobySeptember 9, 2010
2 Sept 9, 2010
Discussion TopicsDiscussion Topics
• AEP Texas Use of the CIM• Benefits for AEP• Future Transmission Expansion• Problems we have encountered
3 Sept 9, 2010
Discussion TopicsDiscussion Topics
• AEP Texas Use of the CIM• Benefits for AEP• Future Transmission Expansion• Problems we have encountered
4 Sept 9, 2010
Current Use of the CIMCurrent Use of the CIM
• External Model Updates• Ability to Quickly Merge in External Models
– Data is current and available– Approximately 4 hour process to Merge Models– Normally Merge models 4-5 times a year.
• CIM Incremental files used for some model changes to ERCOT.
5 Sept 9, 2010
External Model Update ProcessExternal Model Update Process
CIMXML File
CIM Import/exportDB modeler
EMS vendor
Proprietary format
Internal EMS model
Vendor Proprietary
format
Merge application
New merged
EMS model and ICCP
models with AEP
internal model and
ERCOT external model
6 Sept 9, 2010
Discussion TopicsDiscussion Topics
• AEP Texas Use of the CIM• Benefits for AEP• Future Transmission Expansion• Problems we have encountered
7 Sept 9, 2010
Benefits for AEPBenefits for AEP
• Lower Manpower to Update External Models– No need to track external construction as closely.– Getting data from neighboring TO’s a challenge.– Merge process quick and can be completed and online in
a couple of days.• Data is always up to date
– TO’s model data in ERCOT systems– Data is current and available.
• Better Models and Solutions– Better Model for State Estimation and Contingency
analysis.– Real-time data for entire network.– ERCOT and AEP see the same problems.
8 Sept 9, 2010
Discussion TopicsDiscussion Topics
• AEP Texas Use of the CIM• Benefits for AEP• Future Transmission Expansion• Problems we have encountered
9 Sept 9, 2010
Renewables, Renewables, Renewables,RenewablesRenewables,Renewables
10 Sept 9, 2010
ERCOT CREZ ProjectERCOT CREZ Project
11 Sept 9, 2010
AEP Western AreaAEP Western Area
12 Sept 9, 2010
AEP Western AreaAEP Western Area
13 Sept 9, 2010
Discussion TopicsDiscussion Topics
• AEP Texas Use of the CIM• Benefits for AEP• Future Transmission Expansion• Problems we have encountered
14 Sept 9, 2010
ProblemsProblems
• Model Exchange and Model Merge very different functions.
• ERCOT has added many CIM extensions.• We do not see a lot of RTO support across
the country.• Large Learning Curve.• Vendors License fee’s pose problems to
merging in large external models.
15 Sept 9, 2010
ImprovementsImprovements
• More work needs to be done on how the industry will handle model exchange with CIM extensions.
• From an implementation standpoint, the process to move to the CIM for model exchange and incremental updates is not clear. There needs to be better ways to communicate what is involved to synchronize models to allow that to happen.
