Current Telemetry Dashboards

1. Current Telemetry Dashboards NDSWG June 16, 2009 http://nodal.ercot.com 1

2. QSE Telemetry (as of 06/08/09) http://nodal.ercot.com 2

3. TDSP Telemetry (as of 06/08/09) http://nodal.ercot.com 3

4. Load Observability (as of 06/08/09) http://nodal.ercot.com 4

5. State Estimator Daily Convergence Rates – May 2009 http://nodal.ercot.com 5

6. State Estimator Monthly Convergence Rates – March 2009 – May 2009 http://nodal.ercot.com 6

7. FIT III, Week 7 – State Estimator FIT III Assessment reports will be posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html Key Numbers 97.07% Test Average Convergence/ 100% for 18 of 26 Test Hours. On Day One, zonal-nodal mismatches caused convergence to dip below to 87% for Hour Ending (HE) 1300 and 85% for HE 1400. A convergence of 100% was achieved during 7 of 9 test hours. On Day Two, zonal-nodal mismatches caused convergence to hover at 92% for the morning hours, followed by a convergence rate of 100% for each of the six consecutive hours remaining in the test day. On Day Three, a failover of the Energy Management System (EMS) was required during HE 1100 to accommodate a database load to bring new model updates online. As a result, one test hour was excluded from the test results, and the average convergence rate for the overall test was calculated over 26 test hours rather than the 27 hours originally scheduled. The convergence percentages for FIT III Wk 7 were the highest yet recorded for the FIT III series, with the rounded daily percentages all hitting the 97% Stated Estimator performance standard. http://nodal.ercot.com 7

8. FIT III, Week 8 – State Estimator FIT III Assessment reports will be posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html Key Numbers 88.62% Test Average Convergence; 100% for 10 of 27 Test Hours; majority of issues attributed to zonal-nodal mismatches. On Day One, the convergence rate for Hour Ending (HE) 0900 dipped to 55% owing to one ICCP link being down. Multiple manual replacements were made during HE 1000 and HE 1400 to address a disconnect issue and generation units coming online—convergence rates during these hours dipped to 85% and 71% respectively. Convergence rates achieved 92% or higher for the remaining six test hours for the day. On Day Two, the convergence rate for HE 1400 dipped to 54% owing to two ICCP links being down. Multiple manual replacements were made during HE 1500 to address a disconnect issue and zonal-nodal mismatches. Convergence rates achieved 92% or higher for the remaining seven test hours for the day. On Day Three, the convergence rate for HE 1500 dipped to 80% owing to multiple manual replacements being made to address zonal-nodal mismatches. Convergence rates achieved 92% or higher for the remaining eight test hours for the day. http://nodal.ercot.com 8

9. Trends – FIT II & FIT III * One hour was removed from the Wk 7 test results to accommodate a nodal database load. * 9 10/5/2014 LFC

10. Appendix: Telemetry & State EstimatorOverview of Reports, Processes, and Data http://nodal.ercot.com 10

11. ICCP • Telemetry Support • Telemetry Reporting • State Estimator Tuning • New Telemetry Point Addition Process • Telemetry Issue Process • Current Telemetry Status • Telemetry Status Whereabouts http://nodal.ercot.com 11

12. Telemetry Support • ERCOT Full Time Staff ICCP Support • Advanced Network Applications Support 2 Engineers • Control Room 1 Operations Analyst & 1 Shift Engineer • IT 2 System Analysts • Additional Staff on a part time basis • Market Participants • Contact for Nodal Issues • Timely Response on detected issues http://nodal.ercot.com 12

13. Telemetry Dashboards • The following Telemetry Dashboards are being posted on the Readiness Center: • Observability • QSER & TDSP Telemetry • The link for these dashboards is: http://nodal.ercot.com/readiness/eds1/documents/index.html • These dashboards are currently being posted monthly following each mid-month Nodal database update. • Report questions can be sent to EDS2@ercot.com FIT II & FIT III Assessment reports are posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html http://nodal.ercot.com 13

14. Telemetry Dashboards Telemetry Dashboards } http://nodal.ercot.com 14

15. Telemetry Reporting – QSER/TDSP Dashboard QSER & TDSP Dashboard Questions may be sent to: eds2@ercot.com http://nodal.ercot.com 15

16. Telemetry Reporting – Observability Dashboard If a number other then 0 is in column B, then there is missing telemetry which requires Market Participant Corrective Action. Questions may be sent to: EDS2@ercot.com http://nodal.ercot.com 16

17. Telemetry Reporting State Estimator (SE) Convergence • SE & Supporting Telemetry Information is posted on EDW MIS The link is: https://nodaleds.ercot.com/pps/tibco/mis/Pages/Market+Information/Real+Time+Market • Advanced Network Applications provides analysis assistance and be reached at the EDS2 email: EDS2@ercot.com http://nodal.ercot.com 17

18. SE Convergence Supporting Information on EDW MIS Click on More State Estimator Reports and Extracts http://nodal.ercot.com 18

19. SE Convergence Supporting Information on EDW MIS Click on More State Estimator Convergence Rate Reports http://nodal.ercot.com 19

20. State Estimator Tuning • FIT • Monitors Telemetry • Compares Generation between Zonal & Nodal • ICCP Support Team • Analysis Support of FIT Issues • ICCP Issue Resolution Support • Produce FIT Report http://nodal.ercot.com 20

21. FIT Telemetry Reporting FIT Report • Log of Events & Observations • The daily logs published in the bi-weekly FIT Reports provide a window into the types of issues that affect convergence during FIT testing hours. • FIT Reports are posted at:http://nodal.ercot.com/readiness/eds3/documents/index.html Questions can be sent to EDS2@ercot.com http://nodal.ercot.com 21

22. New Telemetry Point Addition Process http://nodal.ercot.com 22

23. Current Telemetry Issue Process http://nodal.ercot.com 23