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Frequency Response Initiative

Frequency Response Initiative. Robert W. Cummings Director of System Analysis and Reliability Initiatives NERC Standing Committees September 14-15, 2010. FRI Objectives. Coordinate all NERC standards development and performance analysis activities related to frequency response and control

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Frequency Response Initiative

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  1. Frequency Response Initiative Robert W. CummingsDirector of System Analysis and Reliability Initiatives NERC Standing CommitteesSeptember 14-15, 2010

  2. FRI Objectives • Coordinate all NERC standards development and performance analysis activities related to frequency response and control • Identify specific frequency-related reliability factors • Identify root causes of changes in frequency response • Identify practices and methods to address root causes • Consider impacts of integration of new generation technologies (such as wind, solar, and significant nuclear expansion)

  3. FRI Objectives • Develop metrics and benchmarks to improve frequency response performance tracking • Share lessons learned with the industry via outreach, alerts, and webinars • Determine if performance-based frequency response standards are warranted

  4. Near-Term Tasks • Develop a clear set of terminology for use by NERC and the industry • RS, FRWG, Freq. SDTs, SARI staff • Start Date: April 26, 2010 • Out for comment from PC & OC • Target End Date: September 30, 2010 • Issue an Recommendation (ROP § 810) and survey to collect data and information for analysis • Survey drafting team, SARI staff • Start Date: May 2010Issue: Sept. 9-15, 2010 • GOs/GOPs – 3-month response required • BAs – 45 day response required • Target End Date: Dec. 31, 2010

  5. Near-Term Tasks • Analyze current and historical Primary and Secondary Control Response performance – what factors influence that performance (original tasks 3&4) • Control Factor Task Team • RS, FRWG, Freq. SDTs, SARI staff • Start Date: Aug. 2, 2010 • Analyze • Existing primary control parameters – governor behavior • ACE equation influences – Appropriate Frequency Bias levels (mid-term task) • Plant-level controls influence • More? • Target End Date: Jan. 31, 2011

  6. Near-Term Tasks • Develop automated method for determining frequency deviation events to be used for BAs to measure Primary Control Response • RS, FRWG, & SARI staff • Start Date: Aug. 1, 2010 • Parameters for events being evaluated by RS & FRWG • Evaluating CERTS FMA Tool • Incorporate FNet-like detection & triangulation algorithm • Potential modifications – DOE funding • Scope changes by Oct. 31, 2010 • Quarterly review of event list and selection by RS or FRWG • Target End Date: April 29, 2011

  7. Near-Term Tasks • Develop appropriate metrics for tracking frequency performance on each interconnection to monitor trends and performance • RS, FRWG, Freq. SDTs, & SARI staff • Start: October 1, 2010 • Target End Date: December 31, 2010

  8. Near-Term Tasks • Develop sustainable methods for auto-matically collecting, trending, and analyzing various elements of frequency response and control for frequency deviation events • RS, FRWG, Freq. SDTs, & SARI staff • Start Date: Aug. 1, 2010 • Data collection being evaluated by RS & FRWG • Evaluating CERTS FMA Tool • Incorporate PMU-based determination of Points A, B & C • Potential modifications – DOE funding • Scope changes by Oct. 31, 2010 • Target End Date: April 29, 2011

  9. Mid-Term Tasks • Determine appropriate minimum Bias settings for use in AGC systems as part of an overall Frequency Response and Control strategy • RS, FRWG, Freq. SDTs, & SARI staff • Analyze variability of frequency response to determine range of frequency response that must be protected • Analyze sensitivity to performance for various Frequency Bias settings in ACE equations • Start: November 1, 2010 • Target End Date: April 29, 2011

  10. Mid-Term Tasks • Improve transient dynamic models of Primary Control Response for generators and other devices • Governor Review Team – DOE funding • John Undrill/Eric Allen • Student assistance • Regional modeling groups • Compare GO/GOP Survey information against dynamic models • Critical evaluation • Analysis of control parameters in models • Recommendations for improvements & Feedback to regions and GOs • Start: November 1, 2010 • Target End Date: September 30, 2011

  11. Some Frequency Control Initial Findings • No system wide tuning strategy being employed • Prior to interconnections of systems, it was necessary to tune each governor to regulate system frequency in isolation • The necessity of stable isolated governing has given way in many cases to faster load ramping or AGC control

  12. WECC Hydro

  13. Retuned Hydro Governors

  14. Mid-Term Tasks • Explore and analyze what are appropriate frequency response and control performance requirements to maintain system reliability • RS, FRWG, Freq. SDTs, & SARI staff • In-depth analysis control performance requirements for generators • Evaluate progress made in ERCOT • Lowered deadband to ±16.7 mHz • No-step method of droop application • Report to OC/PC • Possible recommendations for SARs • Start: November 1, 2010 • Target End Date: April 29, 2011

  15. Longer-Term Tasks • Develop and implement mid-term dynamic models of Primary Control Response of generators and other devices • Potential participants – TIS, SPCS, MVTF, turbine / generator and controls manufacturers • Research required – potential DOE funding • Tied to Modeling Improvements and System Protection Initiatives • Projected Start: January 2011 • Target End Date: December 2012

  16. Longer-Term Tasks • Analyze current Inertial Response and determine what factors influence performance • Potential participants – TIS, MVTF, regional dynamics groups • Collect inertial response information from PMU data for Eastern and Western Interconnections • National labs collecting data from data concentrators for frequency events determined by RS/FRWG • Data Collection Start: October 1, 2010 • Target End Date: December 2012

  17. Longer-Term Tasks • Examine Primary Control Frequency Response characteristics of electronically-coupled resources and “smart grid” loads • Develop load and “generator” models (research required) to properly analyze influence on system behavior in transient, post-transient, and mid-term stability • Potential DOE funding • Work underway – BPA initiative on load analysis • Potential participants – TIS, MVTF, regional dynamics groups • Start Date: August 1, 2010 • Target End Date: December 2012

  18. Longer-Term Tasks • Explore how displacement of inertial generation with electronically-coupled resources might influence Inertial Response • Potential participants – TIS, MVTF, regional dynamics groups • Analyze sensitivity of system dynamics to changes in inertial response and synchronizing torque • Attenuation of oscillatory impulses • Dynamic cohesion • Predecessor – determining characteristics of electronically-coupled resources and loads • Start Date: June 2011 • Target End Date: July 2012

  19. Reporting & Ongoing Activities Ongoing Activities • Communications / Educational Outreach • Technical Reference Documents • Webinars / Workshops • Metrics & Calculations • Ongoing determination of frequency events for analysis • Quarterly determination of response performance Reporting on FRI Progress • Oct. 18, 2010 – Report to FERC • Dec. 31, 2010 – Report to Board • February 2011 – Report to Board and FERC • 2011 & 2012 Quarterly Reports to Board

  20. Question & Answer

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