1 / 14

Overview of January 6 EEA Event Chad Thompson Manager, Operations Support ROS ERCOT Public

Overview of January 6 EEA Event Chad Thompson Manager, Operations Support ROS ERCOT Public March 6, 2014. Event Summary – January 6, 2014.

morton
Télécharger la présentation

Overview of January 6 EEA Event Chad Thompson Manager, Operations Support ROS ERCOT Public

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. Overview of January 6 EEA Event Chad Thompson Manager, Operations Support ROS ERCOT Public March 6, 2014

  2. Event Summary – January 6, 2014 • At 6:52, ERCOT declared Level 1 of its Energy Emergency Alert (EEA) and declared EEA Level 2 at 7:01, primarily due to the loss of a number of generating units • Non-Spin Reserve Service (NSRS), Load Resources (LR) and Emergency Response Service (ERS) were deployed, but firm load shed was not required • ERCOT moved from EEA2 to EEA1 at 7:51 and resumed normal operations at 9:12 • Generation outages & derates peaked at 9355 MW just before 07:00, with 3541 MW due to weather • Hourly peak demand was 55,487 MW for HE08 and instantaneous peak demand was 56,478 MW at 07:08:24

  3. Timeline – January 6, 2014 EEA EEA Level 1 cancelled. Watch remains in effect. 07:51 AM ERCOT recalled EEA Level 2. EEA Level 1 remains in effect 07:56 AM ERCOT recalled 30 minute ERS 07:58 AM ERCOT recalled 10 minute ERS. ERCOT issued EEA Level 1 for PRC below 2300 MW ERCOT issued EEA Level 2 for PRC below 1750 MW Watch terminated as PRC was above 3000 MW Watch issued due to PRC below 2500 MW 09:12 AM 09:55 AM 06:42 AM 07:01 AM 06:52 AM 06:42 AM 06:57 AM 06:52 AM 06:37 AM 08:10 :36 AM ERCOT recalled all Non-Spin 08:10:48 AM ERCOT deployed RRS to Generators for frequency below 59.91 Hz 08:17 AM ERCOT recalled all RRS from Generators due to frequency above 59.91 Hz 07:02 AM ERCOT deployed 30 minute ERS for 111.68 MW 07:05 AM ERCOT deployed 10 minute ERS for 508.72 MW 07:13 AM ERCOT recalled all RRS from Generators due to frequency above 59.91 Hz ERCOT deployed Non-Spin for 187 MW ERCOT deployed Group 1 RRS for 546.36 MW 07:43 AM ERCOT recalled all Group 2 RRS 07:50 AM ERCOT recalled all Group 1 RRS ERCOT deployed RRS to Generators for frequency below 59.91 Hz ERCOT deployed Group 2 RRS for 536.24 MW

  4. EEA Steps EEA procedure in the ERCOT Protocols defined by levels 1 Maintain 2,300 MW of on-line reserves Maintain 1,750 MW of on-line reserves. Interrupt loads providing Responsive Reserve Service. Interrupt loads providing Emergency Response Service (ERS). 2 Maintain System frequency at or above 59.8 Hz and instruct TSPs and DSPs to shed firm load in rotating blocks. 3

  5. Event Highlights • Weather was warmer than February 2 2011 • Load and Wind Forecast error were within acceptable margins • 9355 MW forced out/derated/failed to start by HE07; 3541 MW due to weather, and 2468 MW planned out & 2938 MW forced out going into the operating day (14,761 MW) • 97 units experienced forced outages/derates, or failure to start from 00:00 to 23:59 on 1/6/14 • 1 unit committed in DRUC, no units committed in HRUC • Responsive Reserve from generation was deployed in response to low frequency events • Load Resource performance was 94 % • SCED was able to manage congestion

  6. Forecast Comparison • Weather was warmer than February 2, 2011, and cooler than January 7 when the load was higher (57,277 MW) • MTLF MAPE was 2.29 % for the day (metric is 3.5-4%) • WPF Error was 8.1 % for the day (2013 average was 8.3%)

  7. Generation Outages Note: This does not include outages which occurred before midnight on January 6

  8. Generation Outages Note: This does not include outages which occurred before midnight on January 6

  9. Reserves

  10. Frequency & Physical Responsive Capability 214 MW 06:47 900 MW @ 06:35 900 MW @ 08:11 310 MW 06:59 215 MW @ 08:50

  11. Ancillary Services • ERCOT manually deployed Non-Spin from 6:42 to 8:10 • Load Resources were manually deployed with a 94 % overall performance • Responsive Reserve from generation was deployed form 6:37 to 7:13 and again from 8:10 to 8:17 • one unit (319 MW) was committed in HRUC

  12. Congestion • There were as many as 17 constraints active in SCED between 05:00 and 12:00 on January 6 • SCED was operational and able to manage congestion during this event

  13. Next Steps • ERCOT and Texas RE requested additional information from generators on causes of generator trips and derates on January 6 • This additional information resulted in outaged/derated MWs changing since the TAC report on Jan 28 • ERCOT has (re)visited 4 of the units who initially reported weather-related issues on January 6 to review winterization plans • ERCOT had already requested data to improve accuracy of wind forecast during icing and cold weather from wind generators due to November 2013 cold spell; need to add temperature limits to RARF • Enhance procedures to directly consider increased generating capacity unavailability for unit commitment during severe cold weather events • Reassess outage calculations used for future SARA reports to ensure derates are appropriately included • Improve means to get updated information on generation derates and startup failures to ERCOT in near-real time

  14. Questions Next Steps

More Related