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Changes in Relay Misoperations Reporting

Changes in Relay Misoperations Reporting. Curtis Crews, Reliability Services Texas Reliability Entity, Inc. Highlights. Changes Why Change? How to Change?. Changes. Reporting Form Consistency in data, definitions, and format (currently being reviewed by SPCS) Reporting Periodicity

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Changes in Relay Misoperations Reporting

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  1. Changes in Relay Misoperations Reporting Curtis Crews, Reliability Services Texas Reliability Entity, Inc.

  2. Highlights • Changes • Why Change? • How to Change? ERCOT ROS November 11, 2010

  3. Changes • Reporting Form • Consistency in data, definitions, and format (currently being reviewed by SPCS) • Reporting Periodicity • Quarterly (Starting 1st Quarter 2011) Why change? ERCOT ROS November 11, 2010

  4. History of Proposed Changes • Result of NERC Reliability Metrics Working Group (RMWG), ERO-Reliability Assessments and Performance Analysis Group (ERO-RAPA), discussions • Coordinated with Reliability Assessment Subcommittee (RAS), System Protection and Control Subcommittee (SPCS), Transmission Availability Data System Working Group (TADSWG), Transmission Availability Data System Regional Entity Coordinators (TADS-REC) ERCOT ROS November 11, 2010

  5. Adequate Levels of Reliability(ALRs defined by RMWG) • ALR4-1 Automatic Transmission Outages (ATO) Caused by Protection System Misoperations • ALR6-11 ATO initiated by Failed Protection System • ALR6-12 ATO initiated by Human Error • ALR6-13 ATO initiated by Failed AC Substation Equipment • ALR6-14 ATO initiated by Failed AC Circuit Equipment ERCOT ROS November 11, 2010

  6. ERO-RAPA Key Function • Develop a plan and an enterprise approach to data collection, checking, validation and assessment for use throughout NERC and the eight Regional Entities. ERCOT ROS November 11, 2010

  7. Transmission Availability Data System(TADS) • System change required to capture misoperation data • Expansion of data required (TADS reports >200kV) • Communication issues with TADS responsible entity and Relay Misoperation responsible entity • TADS personnel are not Relay personnel ERCOT ROS November 11, 2010

  8. How to change? • NERC Standard change • NERC Rules of Procedure Section 1600 Request • Change TADS • Regional procedures • First 3 options determined to be a more extended timeframe ERCOT ROS November 11, 2010

  9. Misoperations “Trend” ERCOT ROS November 11, 2010

  10. Summary of 2009 Misoperations - Cause Per TADS Definitions: 50% of 2009 misoperations attributable to Human Error ERCOT ROS November 11, 2010

  11. Summary of 2010 Misoperations - Cause Per TADS Definitions: 59% of 2010 misoperations attributable to Human Error ERCOT ROS November 11, 2010

  12. References • NERC Reliability Metrics Working Group http://www.nerc.com/filez/rmwg.html • NERC ERO Reliability Assessments and Performance Analysis Group http://www.nerc.com/filez/ero-rapa.html • NERC System Protection and Control Subcommittee http://www.nerc.com/filez/spctf.html • ERCOT System Protection Working Group http://www.ercot.com/committees/board/tac/ros/spwg/ • ERCOT Operating Guides http://www.ercot.com/mktrules/guides/operating/ ERCOT ROS November 11, 2010

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