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Service Outage Report on Spreadsheet

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					  Texas Nodal Energy & Market Management System
                            EMS/MMS Projects
                         Requirement Documents

                               November 30, 2006
                                   Al Hirsch
                            EMS/MMS Project Manager




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EMS/MMS Agenda – Thursday, November 30, 2006




 EMS & MMS Project Status Update

 Overview of Submitted Outage Scheduler Requirements

 Report on TPTF Comments on MMS Requirements

 Presentation & Overview of EMS/MMS Whitepapers




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EMS/MMS Agenda – EMS & MMS Project Status Update

                  MMS Phase 1 & Phase 2 Accelerated SCED Milestones




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EMS/MMS Agenda – EMS & MMS Project Status Update




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EMS/MMS Agenda – EMS & MMS Project Status Update

                               MMS Phase 2 Milestones




                                          SCED FAT




                                                        MMS FAT

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EMS/MMS Agenda – EMS & MMS Project Status Update


                               MMS Phase 2 – Accelerated SCED Delivery




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EMS/MMS Agenda – EMS & MMS Project Status Update



                                    MMS Phase 2 – MMS Delivery




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EMS/MMS Agenda – EMS & MMS Project Status Update




                     MMS Phase 2 – Original Integrated MMS Delivery


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EMS/MMS Agenda – EMS & MMS Project Status Update




                                       EMS FAT –
                                         Still A Target




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EMS/MMS Agenda – EMS & MMS Project Status Update




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EMS/MMS Agenda – Overview of Submitted Outage Scheduler Requirements




                                   Presented By:
                                     Sai Moorty
                                 MMS Project Engineer




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EMS/MMS Agenda – Overview of Submitted Outage Scheduler Requirements



  Outage Scheduler Requirements Document Submitted for TPTF
   Review on November 22, 2006

  TPTF review comments due to ERCOT on December 8, 2006

  Informal TPTF review feedback is that Outage Types listed in
   Requirements documents are more than that specified in the
   Nodal Protocols.
     ERCOT is of the opinion that the Outage Types listed in the
       Requirements Document are needed. However, ERCOT is
       analyzing the feasibility of treating the Outage Types of concern as
       Sub-Types of Outage Types defined in the Nodal Protocols.




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EMS/MMS Agenda – Report on Received Comments on MMS Requirements



  5 Spreadsheets detailing the disposition of TPTF review comments on
   MMS Requirements documents.

     Accepted: Requirements document to be changed as per review comment.

     Clarification Provided* : Requirements document to be changed as well as
      clarification provided in spreadsheet

     Clarification Provided: Clarification provided in spreadsheet

     Response: Moved to IDA Punch List – Issues predominantly pertaining to
      interfaces with other ERCOT systems.

     Rejected: Review comment rejected as it does not comply with Nodal
      Protocols.




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EMS/MMS Agenda – Report on Received Comments on MMS Requirements



  5 Clarification notes are also provided on the following topics:
     Explanation of Market Submission Items
     Ancillary Service Offer Modeling
     CRR related issues in DAM
     Pricing Issues with Fixed Quantity Block Offers and Bids in DAM
     Additional information regarding Competitive Constraint Test
      Procedures (option to add this as an appendix to CCT
      Requirements document)




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EMS/MMS Agenda – Presentation Overview of Eight (8) EMS/MMS Whitepapers



  Objective:
     Concurrence and disposition from TPTF of concepts described in
      White Papers
     Refine design direction based upon TPTF feedback

  Background:
     Requirements analysis of Real-Time Operations related to Load
      Frequency Control (LFC) and its interaction with Security
      Constrained Economic Dispatch (SCED) raised some issues.
     Subsequent discussions between ERCOT, Vendors (AREVA and
      ABB) and Floyd Trefny (Consultant) resulted in decision to submit
      White Papers to TPTF for review.




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EMS/MMS Agenda – Presentation Overview of Eight (8) EMS/MMS Whitepapers



  HDL And LDL During Start up and AS Recall
      During Responsive Reserve recall if the calculated HDL falls below LSL then calculate:
             HDL = LDL = Max (POWERTELEM - (SCED Down Ramp Rate * 5), LASL)

      During Generation Resource startup when POWERTELEM is above 90% but less than LSL then
       calculate
             LDL = HDL = Min (Actual Gen + (SCED Up Ramp Rate * 5), HASL)

      During Generation Resource startup when POWERTELEM falls below 90% of LSL then
       calculate
             HDL = LDL = POWERTELEM

  SCED Base Point Dispatch
      QSEs will receive the following two Base Point values for each Resource:
             The Base Point as calculated by SCED at every SCED execution
             The Updated Desired Base Point updated every 4 seconds by LFC. The Updated Desired Base Points
              represent the ERCOT desired control each LFC cycle


  Ancillary Service Schedules and Deployment Telemetry
      Expand the set of data to be telemetered from QSE to ERCOT to include the Ancillary Service
       Resource Responsibility for each participating Resource




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EMS/MMS Agenda – Presentation Overview of Eight (8) EMS/MMS Whitepapers



  Responsive Reserve Deployment and Recall
     ERCOT’s deployment of RRS to QSEs will include the following two
      signals:
          RRS capacity deployment signal wherein each QSE will simply adjust their RRS schedule
           on their Resources and wait for SCED to produce new Base Points that can include
           additional Responsive Reserve MW requirement.
          RRS energy deployment signal that requires each QSEs to produce that additional energy
           through their own deployment to its Resources providing RRS.
      QSE’s telemetry to ERCOT will include the following two signals:
          Signal to indicate the RRS Resource Responsibility
          Signal to indicate the remaining RRS Ancillary Service Schedule that is the difference
           between the RRS Resource Responsibility amount and deployed amount.
  Non-Spin Deployment Notification and Availability
      QSEs are requested to provide to ERCOT two data items related to Non-Spin:
          Non-Spin Responsibility (reflects Non-Spin obligation for the Resource where deployed or
           not deployed)
          Non-Spin Ancillary Service Schedule (normally equal to Non-Spin responsibility, changes to
           zero when the QSE makes the Resource available for dispatch following an ERCOT
           request for Non-Spin deployment, and returns to the Non-Spin responsibility value when
           ERCOT recalls Non-Spin).




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EMS/MMS Agenda – Presentation Overview of Eight (8) EMS/MMS Whitepapers



  Base Point above HASL Flags
      It will not be necessary to implement either the “Base Point above HASL”
       or “Pseudo-Resource Dispatch” flags in the ICCP telemetry to QSEs
      Indication of Pseudo-Resource Dispatch will be provided in the MIS Secure
       Area

  Coincidental Deployment of Up and Down Regulation
      LFC should not be artificially constrained in a way that regulation
       deployment of some QSEs may have opposite signs from the other QSEs

  Emergency Base points Calculation and Deployment
      During SCED failure, Emergency Base Points will be calculated and issued
       to QSEs through Generation Subsystem in the EMS. Distribution of
       Emergency Base Points will cause the current regulation deployment to be
       reset the same as an update of the SCED solution




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EMS/MMS Agenda – Conclusion



 Wrap-Up



 Next Steps




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