Current Telemetry Dashboards

1. Current Telemetry Dashboards NDSWG May 19, 2009 http://nodal.ercot.com 1

2. QSE Telemetry (as of 04/30/09) http://nodal.ercot.com 2

3. TDSP Telemetry (as of 04/30/09) http://nodal.ercot.com 3

4. Load Observability (as of 04/30/09) http://nodal.ercot.com 4

5. State Estimator Convergence Rate – April 2009 http://nodal.ercot.com 5

6. State Estimator Convergence Rate – February 2009 – April 2009 State Estimator Convergence: February – April 2009 http://nodal.ercot.com 6

7. Focused Input Testing (FIT) III, Week 5 – State Estimator FIT III Assessment reports will be posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html Key Numbers 91% Test Average Convergence; 100% for 8 of 27 Test Hours Primary issues affecting overall test included manual replacements to address Zonal-Nodal mismatches On Day One, convergence dipped at HE 1100 from an ICCP link going down and dipped again at HE 1400 owing to output data not currently telemetered to nodal (manual replacements to be made until nodal telemetry is running) On Day Two, convergence started low owing to missing ICCP tags for several data points. ANA is communicating with MPs to address the issues and will do manual replacements until the tags are operable. Otherwise, the expected zonal-nodal mismatches kept convergence hovering at ≥92% for remaining test hours. On Day Three, a replay of manual replacements from Day Two kept convergence at ≥92% for most test hours and at 96% for the day. http://nodal.ercot.com 7

8. FIT III, Week 6 – State Estimator FIT III Assessment reports will be posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html Key Numbers 93.56% Test Average Convergence; 100% for 13 of 27 Test Hours On Day One, zonal-nodal mismatches and telemetry losses caused convergence to dip below 90% for Hour Ending (HE) 0900 and HE 1200; convergence achieved 92% or better for all remaining test hours for the day On Day Two, an ICCP link went down during HE 1400, causing convergence to dip to 73% for the hour; convergence achieved 92% or better for all remaining test hours for the day On Day Three, An ICCP link went down during HE 1500, causing convergence to dip to 64% for the hour; zonal-nodal mismatches affected HE 1500 with an 86% convergence for the hour; convergence achieved 92% or better for all remaining test hours for the day Overall, the majority of issues affecting convergence during testing hours were due to mismatches between zonal and nodal telemetry http://nodal.ercot.com 8

9. Trends – FIT II & FIT III 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