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Slides for FR Technical Conference

Slides for FR Technical Conference. Office of Electric Reliability September 2010. Frequency Response Basics (Using a 1400 MW generation loss event as an example). Page 2. Frequency Response Basics. August 4, 2007 1744 Hours Event. A. FRCC Under-frequency load shed level. B1. B2. B3.

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Slides for FR Technical Conference

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  1. Slides for FR Technical Conference Office of Electric Reliability September 2010

  2. Frequency Response Basics (Using a 1400 MW generation loss event as an example) Page 2

  3. Frequency Response Basics

  4. August 4, 2007 1744 Hours Event A FRCC Under-frequency load shed level B1 B2 B3 Source: 2010. NERC Overview of Frequency Response. NERC

  5. Frequency Performance Arresting Period Rebound Period Recovery Period

  6. ERCOT May 15, 2003 Event ERCOT UFLS level Source: ERCOT

  7. ERCOT May 15, 2003 1453 Event Source: ERCOT

  8. Source: MISO Reliability Subcommittee

  9. Source: MISO Reliability Subcommittee

  10. Source: MISO Reliability Subcommittee

  11. Frequency Recordings from Different Locations within the Western Interconnection Following the Sudden Loss of a Large Generator Source: Courtesy of Genscape

  12. Basic Representation of System Frequency Governing Page 12

  13. Illustration of Frequency Response for a 3% generation loss

  14. Simple Test System System size is 100 GW 3 GW of generation tripped All generators have inertia of 4 seconds Load damping D=1 Baseloaded generation does not response to frequency, produces the same MWs Responsive generation has droop setting of 5% and head room of 3GW

  15. Different speed of reponse of “responsive” units Blue = gas-turbine unit on governor control Red = (fast) hydro-power unit on governor control Green = (ideal) steam-turbine unit on governor control

  16. Nadir Frequency will greatly depend on how reserves are allocated On the left side, all the reserves are put on a single unit. On the right, the reserves are spread among three units. With the same droop setting, the frequency drop for the case on the left case will be three times the frequency drop for the case on the right side.

  17. Importance of Deployment Rate 20 GW of generating capacity (red) 25 GW of generating capacity (blue) 30 GW if generating capacity (green)

  18. Frequency Response Sustainability Blue = frequency response is sustained Red = generator has a “slow” load controller returning to MW set-point

  19. 2,812 MW RAS event June 17, 2002

  20. 2,815 MW RAS event on May 20, 2008

  21. West Wing fault in Arizona on June 14, 2004:3,900 MW lost at 0 seconds on plot scale

  22. West Wing fault in Arizona on June 14, 2004: Captain – Jack – Olinda 500-kV line was out of service during the disturbance

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