1 / 13

2005 – Methodologies for Determining AS Requirements

2005 – Methodologies for Determining AS Requirements. J. Adams. Quick Review – 2004 Methods. Regulation – mean of historic usage Responsive reserve – 2300 MW Non-spin – flow chart – if expected temperature > 95 or < 30 purchase Nonspin equal to largest unit. Etc.(+ Other conditions).

tuari
Download Presentation

2005 – Methodologies for Determining AS Requirements

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 2005 – Methodologies for Determining AS Requirements J. Adams

  2. Quick Review – 2004 Methods • Regulation – mean of historic usage • Responsive reserve – 2300 MW • Non-spin – flow chart – if expected temperature > 95 or < 30 purchase Nonspin equal to largest unit. Etc.(+ Other conditions)

  3. Quick Review – 2004 Methods • Replacement reserve – calculate sum of requirements –minus resource plan available. If insufficient procure more. • Minimum balancing down requirement - average amount of frequency deviation during periods of high frequency will be analyzed for the season.

  4. 2005 Recommended Changes • Regulation – Old: re-evaluate monthly by 20th of month. Look at current & equivalent month 1 year ago. Calculate mean and standard deviation of deployments. Select amount to cover 2.5 standard deviations. (98.8% of time will not exhaust regulation) • New: Analyze 0600 & 2200 for ramp rate required. Add this additional ramp rate requirement to need.

  5. 2005 Recommended Changes • Responsive reserve requirement – no change (2300 MW) • Non-spin reserve – no change (>92° etc) • Replacement reserve – New replacement program

  6. Review Regulation Calculation U = 60.85, Std dev = 372.32

  7. Interim Result – Hourly requirement

  8. Grouping & Rounding

  9. UREG & DREG Requirement EXAMPLE

  10. 2005 - In addition to the previous • Hour 0600 – Examine each period around 0600 of month for delta frequency over minutes. Convert this frequency error to a MW ramping requirement by multiplying times bias. Add this to the 0600 -0700 requirements. • Hour 2200: Same for 2200-2300.

  11. Effect

  12. Net Effect • Adds ~ 990 MW Regup 0600-0700 • Adds ~ 1020 MW Regdown 0600-0700 • Adds ~ 1025 MW Regup 2200-2300 • Adds ~ 1065 MW Regdown 2200-2300

More Related