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CMWG Meeting

May 13, 2005
09:30 AM - 03:00 PM
ERCOT Austin
8000 Metropolis (Building E), Suite 100
Austin, TX 78744
Rm. 206A

Agenda
  1. Introductions
  2. Task for the CMWG is to brainstorm ideas for improvements for outage coordination and TCRs.
  3. Presentation by Beth Garza  on Transmission Outges
    1. ERCOT not including Generator outages in study case for TCRs due to confidentiality of information
    2. Three items that ERCOT believes affect the quantity of TCRS, in order, are;
      1. Generation Dispatch
      2. Transmission topology
      3. Load Distribution
    3. Dynamic  ratings are not used in the seasonal planning case which are used in determining the TCR quantities
    4. Outages are not included in the annual auction
    5. Suggestion that ERCOT might be able to order outages based on each outages’ impact on each CSC
  4. Ralph Posten detailed the outage request process
    1. The difference between a Forced Extension vs.a Planned Extension is that the Planned Extension has a 3 day advance notice.
    2. A  cost  evaluation is conducted  on Transmission outages that are deemed as high impact and are entered in advance
  5. Jeff  Healy described  the daily CSC limit determination process
  6. Jerry Ward reviewed the outage and TCR study process.
    1. Seasonal Planning Case
    2. TCR Study   (currently adjusted from Seasonal Planning Case by adding line outages of  5 days or more) The following items were determined to have an impact on the study;
      1. Line Outages & Construction
      2. Load distribution
      3. Generation outages (and treatment of Mothballed units)
      4. Ratings (Dynamic and seasonal)
      5. Real-Time vs. MUST process comparison
      6. IDEF submittals vs. Service Request submittals
      7. 40% annual TCR Limit
      8. Accuracy of 45 day outage list
      9. Notice to MPs to update outage data prior to TCR study
    3. 3 Days - Outage Request
      1. Is it possible to calculate CSC Limits 3 days ahead
    4. 1 Day - CSC Limit
    5. Real Time -- do the best you can
  7. John Moseley demonstrated the location of monthly study files on the ERCOT website and explained the file contents. It was requested that ERCOT post both the complete list of outages queried by planning as well as the outage Gantt chart used to determine the highest impact combination of outages.
  8. There was a question and discussion about how and when system topology changes are entered into the network model and available to MPs.
    1. There appears to be a delay from the time changes are submitted to the outage scheduler and when those changes are available on the public website. ERCOT will investigate.

Action Items / Next Steps:

  • ERCOT will report on TCR revenue adequacy
  • ERCOT to look for a better way to identify significant line outages
  • ERCOT will review and determine possible improvements to the following items as they relate to the TCR study;
    • Line Outages & Construction
    • Load distribution
    • Generation outages (and treatment of Mothballed units)
    • Ratings (Dynamic and seasonal)
    • Real-Time vs. MUST process comparison
    • IDEF submittals vs. Service Request submittals
    • 40% annual TCR Limit
    • Accuracy of 45 day outage list
    • Notice to MPs to update outage data prior to TCR study
  • ERCOT to post Gantt chart, if possible
  • ERCOT will investigate the possibility of a delay from the time changes are submitted to the outage scheduler and when those changes are available on the public website.

Attendees:

Jerry Ward 

EXTYR

214-316-7036

Triey Vo

CPS Energy

210-353-2127

Dennis Kunkel

AEP

361-289-4003

Doug Skinner

Entergy

713-304-0450

Ellis Rankin

TXU Electric Delivery

214-743-6825

James Armke

Austin Energy

512-322-6705

Tony Kroskey

Brazos Electric

254-750-6357

Dwight Beckman

Brazos Electric

254-750-6367

Tip Tipton

Brazos Electric

254-750-6267

Kevin Brown

Austin Energy

512-322-6665

Darrell Clifton

CPS Energy

210-353-4386

David Gibbens

CPS Energy

210-353-2915

William Woosley

CPS Energy

210-353-3403

Gerald Ripps

CPS Energy

210-353-2470

Glenn Pressler

CPS Energy

210-353-2212

Clayton Greer

Constellation

512-921-9013

Ralph Posten

ERCOT

512-248-3129

Beth Garza

ERCOT

512-248-6361

Michael Bailey

CenterPoint  Energy

713-207-2278

Jeff Healy

ERCOT

512-248-3079

Phung Nguyen

ERCOT

512-248-3039

Brian  Gedrich

Reliant Energy

713-497-8084

Resmi Sorendran

ERCOT

512-248-3033

John Moseley

ERCOT

512-248-6362

Scheduled CMWG Meetings

Key Documents

May 20, 2005 - ppt - 1.8 MB
May 20, 2005 - doc - 78 KB

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