Planning Working Group (PLWG) Meeting

March 27, 2013
9:30 AM - 3:30 PM
ERCOT Austin Room 206A
7620 Metro Center Dr.
Austin, TX 78744
Teleconference: 1-877-668-4493
Meeting number: 654 799 325
Meeting password: 0327PLWG**



Antitrust Admonition


9:30 a.m.


Agenda Review




OPSTF Issue 12(a): Develop Future Year Seasonal Cases in DSB

  1. This Discussion item Scheduled for 9:45 to assist Julius Availability to Participate in Discussion
  2. Comments from Julius Horvath:
  • SSWG did not want to make a permanent revision to any procedure, Planning Guides or SWWG Procedure Manual, regarding the future seasonal base cases until we saw the actual use/need of the initial set of cases that were developed last Fall.
  • Currently DWG is utilizing these cases to develop a future year seasonal dynamic case and I know that some of the TSPs are also utilizing these cases for future year studies, mainly look at voltage requirements.
  • I will place this item on the next SSWG conference call agenda, scheduled for April 3, 2013, as a discussion item to get a feel for how the SSWG feels about pursuing this as a permanent addition to the annual case building.
  • Due to other PGRRs that are being routed through the approval process at this time, my plan was to finalize SSWG Procedure Manual changes by the SSWG at our next Business Meeting, which is tentatively scheduled for June 12, 2013, so we would be looking at ROS approval in July.




PRGG027 Analysis of Subsynchronous Resonance Studies in Transmission Studies

  1. This agenda item scheduled for 10:00 at request of Oncor
  2. Review of Final Language
  3. Review of Impact Analysis
  4. Discussion and Final Vote




Update on POSTF, ROS, TAC and Board Activity on PLWG Matters

 1. No OPSTF Meeting in March

2. PLWG Report to ROS Summary

  • March 14 ROS meeting cancelled
  •  High level verbal report offered during ROS meeting scheduling call
  •  Attached written report submitted and filed on ROS March 14 meeting page
  •  No new assignments from ROS

3. PGRRs Considered at ROS, TAC and Board

  • ROS none
  • TAC approved PGRR025 Addition of Criteria for Autotransformer Unavailability 
  • Board approved 3 PGRRS:
    • PGRR022 Removal of Planning Reserve Margin Calculation
    • PGRR023 Contingency Filing Requirement
    • PGRR024 Clarify Assumptions and Performance Criteria
    •  PGRR026 Addition of Year 6 to the SSWG Base Case  

4. PLWG Status Bar Review




PGRR Review

  1. Presentation of Language for Review: PGRR028, Evaluation of Compliance with Reactive Requirements.
  2. Discuss PGRR Language Development on OPSTF Issues 3(a), Establishing December 31 as Deadline for Submission of Regional Transmission Plan





Potential Future Discussion Items:

  1. ERCOT Region SOL Methodology for the Planning Horizon, Revision 5
  2. Is this an Issue that PLWG Members would like to discuss in April meeting




2013 PLWG Work Plan

Review PLWG Issues List




Next Meeting Scheduled for April 24, 2013






3:30 p.m.

Scheduled PLWG Meetings