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Working Group (IDCWG)
Update
NAESB BPS
Yasser Bahbaz – IDCWG Chair
September 13th , 2012
IDCWG Update
• Meetings/Conference Calls
• IDC Change Order Updates
• Other Items
• GTL Update
• Action Items
Meetings/Conf Calls
● May 16 – 17th Atlanta GA (NERC) - BPS Joint Meeting
● August 15th – 16th (MISO, St Paul)
● September 24th – Conference Call
● October 16th (8 – 5) – 17th (8 – 12), Las Vega, NV

BPS Joint Meeting October 16th, 1 – 5 pm
Implemented
● CO 346: TLR Auto Acknowledgment
IDC will be modified in such a way that each sink impacted
Reliability Coordinator can set up to automatically acknowledge the
TLR actions based on configurable time intervals after a new TLR
instance
● CO 347: IDC TLR Data Request for New York Transmission Owners
● CO 348: Changes to IDC webData Interface
● CO 349 TLR Acknowledgement/Curtailment Archival
Development/Testing
● CO 322: PFV Generation Priority Submissions

Will be moved to development once a final methodology is reached at BPS. Will
be revised as needed.
● CO 328: Intra Hour Tag Curtailment
 IDCWG has proposed and approved for evaluation a different
solution than previously drafted and evaluated.
● CO 330: Authorization of OATI Use of IDC Data for DOE Studies
DRAFT/Evaluation
●
CO 326: PFV Metrics
 Will be revised after a final methodology is reached at BPS.
●
CO 350: Increase the Initial Limit for NNL Relief Provided During TLR
Issuance
●
CO 351: Update the Flowgate GLDF Display to Show PJM Historic Control
Areas
●
CO 352: Various Enhancements to the NNL Re-Dispatch Worksheet
●
CO 353: PSEC-SOCO Dynamic Tags
●
CO 354: Sending IDC TLR ID to SPP Via webData Interface
●
CO 355: Make Information Flowgates Selectable in Study TLR Mode
Other Items
● IDCWG discussed the impact of the swing bus location (in TVA)
within the IDC model.
● The working group is evaluating moving the swing bus to an area
that is less reliant on IDC TLRs to manage congestion.
● IDCWG discussed and supports TVA’s request of creating pseudo
BAs to enhance impact calculation of IPPs serving load within TVA.
● IDCWG supports and recommends the retirement of the Flowgate
Administration, the Parallel Flow Calculation Procedures and the
Reliability Coordinator Reference Documents. These documents
content are covered in the SDX and IDC user manuals.
IDCWG Update
GTL Update
IDCWG Update
Action Items
Metrics Available to BPS
● Due to the sensitivity of the data that we foresee
involved in the Reliability Metrics, IDCWG/ORS is not in
position to share the data with the BPS.
● IDCWG recommends that metrics be prepared for
commercial purposes to be used by the BPS.
Metrics Available to BPS
In general data can be provided with flowgate owners and flowgate IDs
masked.
● Sources and Sinks of transfers will also be masked.
● Data will be shown in statistical format, percentage changes and ratios – no
actual magnitude of data would be shown.
● Some of the metrics that can be shared are but not limited to,
●


Load metric performance per BA or Load Zone. This would be shown in % and
would be comparison of forecast to actual.
Flowgate Component in percentage by a given anonymous flowgate
 Total GTL native
o By Firm and Non Firm
 Total GTL Transfer
o By Firm and Non Firm
 Total Tags
o By Firm and Non Firm
 Curtailment difference % between IDC and GTL (Native and Transfer) and firmness.
Mask the flowgate

●
Show difference between IDC and GTL for each flowgate by component.
When CO 326 is re-opened for changes to accommodate the latest PFV
methodology, consideration for these features will be added.
Handling of One “Offs”
●
EAR like modeling

●
Pseudo Tied Resources

●
This is handled within the models. – CO 283 this.
DC Ties

●
There is a logic to manage these types of resources in the PFV methodology as
drafted by BPS.
Market Area External Gens

●
This will be handled on a case by case basis. IDCWG will make a decision on
each exception and grant the use of the exception as they come.
CO 283 considers the flow and the status of each DC Tie.
Par Taps and VFT

CO 283 considers the flow and the status of these equipments.
●
IDCWG intends on drafting a guideline of how to model these exceptions in
IDC and consequently PFV logic.
●
Any other exception will need to be brought up to the IDCWG to come up
with best approach to model and manage the exception.
Generator Modeling
● It is expected that all resources modeled in the EMS be
included in the IDC model.
● The calculation and benchmarking actual vs. calculated
will assume that EMS and IDC models are consistent
with each other.
IDCWG Update