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Agenda - Tuesday

Texas Nodal Market Management System Requirement Documents November 7, 2006 Sai Moorty MMS Project Engineer. Agenda - Tuesday. Introduction MMS Requirements Documents Upcoming White Papers MMS Requirements Approval Plan ERCOT contacts. Introduction.

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Agenda - Tuesday

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  1. Texas Nodal Market Management System Requirement DocumentsNovember 7, 2006Sai MoortyMMS Project Engineer http://nodal.ercot.com 1

  2. Agenda - Tuesday • Introduction • MMS Requirements Documents • Upcoming White Papers • MMS Requirements Approval Plan • ERCOT contacts http://nodal.ercot.com 2

  3. Introduction • ERCOT and Vendor (ABB) Team started work together in July 2006. • Sub teams formed for preparing requirements documents on the following major functional areas • Day-Ahead Market (DAM) and Supplementary Ancillary Service Market (SASM) • Reliability Unit Commitment (RUC) • Security Constrained Economic Dispatch (SCED) • Constraint Competitiveness Test (CCT) • Other Processes • Market Management System (MMS) Requirements Documents have been written with reference to the May 2006 version of the Texas Nodal Protocols. • Informal review (October 2006) by some Market Participants of DAM/SASM, RUC and SCED requirements documents. http://nodal.ercot.com 3

  4. Introduction Where we are today Market Management System (MMS) Requirement Documents submitted for TPTF review and approval as compliant to the Texas Nodal Protocols of May 2006 http://nodal.ercot.com 4

  5. Introduction • List of MMS Requirements Documents: • Texas Nodal Market Management Systems (MMS) Requirement Specification For Overall MMS System and Other Processes • Texas Nodal Market Management Systems (MMS) Requirement Specification For Day-Ahead Market (DAM) and Supplemental Ancillary Service Market (SASM) • Texas Nodal Market Management Systems (MMS) Requirement Specification For RUC • Texas Nodal Market Management Systems (MMS) Requirement Specification For SCED and Real-Time MMS Processes • Texas Nodal Market Management Systems (MMS) Requirement Specification For Constraint Competitiveness Test (CCT) http://nodal.ercot.com 5

  6. MMS Requirements Documents • Texas Nodal Market Management Systems (MMS) Requirement Specification For Overall MMS System and Other Processes • Topics covered • Overview of MMS System • System Requirements, AS Deployment for Load Resources, DC Tie processes, COP monitoring/validation. • Operator Alerts, QSE Notification and MIS posting http://nodal.ercot.com 6

  7. MMS Requirements Documents • Texas Nodal Market Management Systems (MMS) Requirement Specification For Day-Ahead Market (DAM) and Supplemental Ancillary Service Market (SASM) • Topics covered • Overview of DAM and SASM subsystems • Inputs and Outputs of the DAM and SASM subsystems • Processing of Market Participants submissions • DAM Processes (Credit check, AS insufficiency check, Oversold CRR determination, CRR Option derating, DAM Clearing) • AS evaluation in Adjustment Period • SASM Process • Mathematical Formulation presented in Appendix http://nodal.ercot.com 7

  8. MMS Requirements Documents • Texas Nodal Market Management Systems (MMS) Requirement Specification For RUC • Topics covered • Overview of RUC subsystem • Inputs and Outputs of RUC • RUC modes (DRUC, HRUC, WRUC) • RUC Input processing • RUC Operator Controls • RUC processes • Mathematical formulation presented in Appendix http://nodal.ercot.com 8

  9. MMS Requirements Documents • Texas Nodal Market Management Systems (MMS) Requirement Specification For SCED and Real-Time MMS Processes • Topics covered • Overview of Adjustment Period and Real-Time Operations related to MMS • Inputs and Outputs of SCED • SCED Input processing • SCED Process and Settlement Point Price Calculation • Mathematical formulation presented in Appendix http://nodal.ercot.com 9

  10. MMS Requirements Documents • Texas Nodal Market Management Systems (MMS) Requirement Specification For Constraint Competitiveness Test (CCT) • Topics covered • Overview of CCT (Annual, Monthly, Daily) • Inputs and Outputs of CCT • CCT Processes http://nodal.ercot.com 10

  11. Upcoming White Papers • Requirement Analysis of Real-Time Operations related to Load Frequency Control (LFC) and its interaction with Security Constrained Economic Dispatch (SCED) has raised issues. • Subsequent discussions between ERCOT, Vendors (AREVA and ABB) and Floyd Trefny (Consultant) resulted in decision to submit White Papers to TPTF for review. • The topics covered in the white papers primarily impacts the EMS Generation Subsystem. The main topics of the White Papers are listed below: • Responsive Reserve deployment and recall • Non-Spinning Reserve deployment and recall • Handling of inconsistent High Dispatch Limit (HDL) and Low Dispatch Limit (LDL) • Ramping of Base Points through telemetered desired generation • Resource Ancillary Service telemetry requirements http://nodal.ercot.com 11

  12. Upcoming White Papers • Potential impact of White Papers on MMS conceptual design are in the following areas: • Requirements related to use of Resource Ancillary Service telemetry • Responsive Reserve deployment and recall • SCED Ramp Rate Calculation • SCED Generation Requirement • Important: While these whitepapers may affect MMS conceptual design, they do not affect the submitted MMS requirements documents or this review process. • Planned next steps • November 17, 2006: Planned submission of White Papers to TPTF • November 27, 2006: TPTF comments on White Papers due to ERCOT • November 28-30, 2006: Discussion on White Papers http://nodal.ercot.com 12

  13. MMS Requirements Approval Plan • November 16, 2006: TPTF comments due to ERCOT • ERCOT would encourage comments to be submitted when ready • MMS team (ERCOT and Vendors) will be available for clarification • November 28, 2006: ERCOT presents status update on and possible discussion of TPTF comments. • December 1, 2006*: ERCOT submits updated MMS Requirements Documents and response to TPTF comments. • December 4, 2006*: TPTF approves MMS Requirements Documents • *These items are target dates, and will be greatly dependent on the quantity of comments and magnitude of changes required. http://nodal.ercot.com 13

  14. ERCOT Contacts Sai Moorty MMS Project Engineer smoorty@ercot.com (512) 431-9648 Brandon Whittle Lead, Real Time Market Operations bwhittle@ercot.com (512) 248-6588 Bill Peterson Coordinator bpeterson@ercot.com (512) 248-6663 http://nodal.ercot.com 14

  15. Questions & Answers http://nodal.ercot.com 15

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