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Review of URGENT PRRs to ERCOT Technical Advisory Committee on Local Congestion and Reliability

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reuben
15 diapositives · 304 Views · Oct 23, 2014

This presentation outlines the urgent requests for revisions (PRRs) discussed in the ERCOT Technical Advisory Committee meeting on April 8, 2004. Key PRRs include PRR 495, addressing short payments and aggregate liability, PRR 497 for unavailable units and RMR agreements, and PRR 492 focused on alleviating chronic local congestion. Additional revisions cover improvements in frequency response standards, telemetry requirements for LaaR, and performance criteria amendments. Effective dates for implementation see adjustments as early as May 1, 2004, ensuring ongoing reliability and compliance.

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  1. Protocol Revision Subcommittee Presentation to the ERCOT Technical Advisory Committee April 8, 2004

  2. Urgency Requests • PRR495 – Effect of Short Payments Owed on Estimated Aggregate Liability • To be considered by PRS in April • PRR 497 – Unavailable Units and RMR Agreements • Language expired prior to replacement • PRR 492 – Plan to Alleviate Chronic Local Congestion • Maintain timeline in effect when filed • PRR 485 – Revision to Unit-Specific Deployment • Meet EMMS4 deadline for incorporation

  3. PRR 468 – Frequency Response Requirements & Monitoring • Establishes standards for QSE portfolio generation governor response & performance monitoring • Recommendation includes comments of WMS/ROS task force • Effective May 1, 2004 • Adds 0.25 FTE for Compliance

  4. PRR 483 – Interruptible LaaR Response to Instructions • Adds to LaaR telemetry requirement • Removes “Box” for LaaR response in SCE • Effective May 1, 2004 • No impact on computer systems, business functions or operations

  5. PRR 485 – Revision to Unit-Specific Deployment • Part of CEDI TF/WMS efforts • PRR sets unit specific bid premiums based on generic costs, excludes RMR units and units in testing from unit specific bid premiums, and excludes application to nuclear, hydro, QFs, renewables & LaaRs • Effective on system implementation • Included in EMMS4/Lodestar, manual workaround requires 0.75 FTE

  6. PRR 487 – Black Start Resources • Allows for generator in adjacent reliability area to provide black start service to ERCOT border resources • Effective upon filling staff requirement • Requires 0.25 FTE to implement for 2005

  7. PRR 488 – Weather Responsiveness Determination • Requirements intended to reduce frequency of incorrect weather sensitivity codes for ESI IDs • Effective upon system implementation • Minor impacts to computer system and business functions • Priority 1.3 assigned

  8. PRR 489 – A/S Deployment Performance Conditions • Amends QSE performance criteria to eliminate certain intervals from consideration due to system events (e.g., ERCOT instructions) • Effective May 1, 2004 • No impact on computer systems, staffing or grid operations; minor business process impacts

  9. PRR 490 – LaaR Annual Testing Description • Shifts LaaR telemetry testing from seasonal to annual and introduces biennial testing of under-frequency relays if providing RRS • Effective May 1, 2004 • 0.1 FTE already in ERCOT Budget

  10. PRR 492 – Plan to Alleviate Chronic Local Congestion • Requires ERCOT to identify areas of chronic local congestion and exit strategies (similar to RMR) • Effective upon system implementation and filling of ERCOT staffing requirements • Requires computer system development; 2-4 FTEs required depending on implementation method; business process impacts; no grid or operations impacts

  11. PRR 497 – Unavailable Units and RMR Agreements • Reinserts RMR evaluation and notice language that expired 3/31/04 as required by the adoption of PRR 452 • New RMR language drafted by RMR TF and submitted for April PRS review (PRR 507) • Effective April 21, 2004 • No impact on computer systems, business functions or grid operations

  12. Recommended Rejections • PRR 486 – Fuel Oil Inventory Service

  13. PRS Accepted Withdrawals • PRR 384 – Advisory Opinion • Superceded by PUC rule • PRR 480 – Reporting of Switch and Move-In Data • Withdrawn after RMS/Submitter communication

  14. Recommended TAC Actions Urgency – 495 (Short-Pay), 497 (RMR), 492 (Local Congestion), & 485 (Unit-Specific) Approval – PRR 468 (Frequency Standards) PRR 483 (LaaR telemetry) PRR 485 (Unit-Specific – CEDI/WMS) PRR 487 (Black Start) PRR 488 (Weather Determination) PRR 489 (A/S Performance) PRR 490 (LaaR Testing) PRR 492 (Local Congestion) PRR 497 (RMR) Rejection – 486 (Fuel Oil)