Texas Nodal Detailled Market Trials Planning Process 30 ...

Texas Nodal Detailled Market Trials Planning Process 30 ...

Current Telemetry Dashboards NDSWG May 19, 2009 http://nodal.ercot.com 1 Lead from the front Texas Nodal QSE Telemetry (as of 04/30/09) http://nodal.ercot.com 2 Lead from the front Texas Nodal TDSP Telemetry (as of 04/30/09) http://nodal.ercot.com 3 Lead from the front Texas Nodal

Load Observability (as of 04/30/09) http://nodal.ercot.com 4 Lead from the front Texas Nodal State Estimator Convergence Rate April 2009 2009 Monthly Convergence % Jan 2009 - 80.27% http://nodal.ercot.com Feb 2009 - 69.88% Mar 2009 - 89.49% 5 Apr 2009 85.70% Lead from the front Texas Nodal State Estimator Convergence Rate February 2009 April 2009 2009 Monthly Convergence %

Jan 2009 - 80.27% Feb 2009 - 69.88% Mar 2009 - 89.49% Apr 2009 85.70% State Estimator Convergence: February April 2009 http://nodal.ercot.com 6 Lead from the front Texas Nodal Focused Input Testing (FIT) III, Week 5 State Estimator 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. FIT III Assessment reports will be posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html http://nodal.ercot.com 7 Lead from the front Texas Nodal FIT III, Week 6 State Estimator 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 FIT III Assessment reports will be posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html http://nodal.ercot.com 8 Lead from the front Texas Nodal Trends FIT II & FIT III FIT Series Week FIT II Week 1 Oct. 21 23, 2008

90.18 74.16 91.83 85.39 12 of 27 hrs Week 2 Nov. 04 06, 2008 88.17 96.58 97.11 93.95 18 of 27 hrs Week 3 Nov. 18 20, 2008 87.17 84.19

82.91 84.76 12 of 27 hrs Week 4 Dec. 02 04, 2008 96.04 93.33 93.44 94.27 14 of 27 hrs Week 5 Dec. 16 18, 2008 94.74 97.49 96.30 96.18

19 of 27 hrs Week 6 Jan. 13 15, 2009 96.00 94.12 95.78 95.30 15 of 27 hrs Week 7 Jan. 27 29, 2009 94.07 90.13 93.29 92.49 14 of 27 hrs Week 1

Feb. 24 26, 2009 75.45 78.86 92.85 82.39 09 of 27 hrs Week 2 Mar. 10 12, 2009 96.82 92.97 98.41 96.07 20 of 27 hrs Week 3 Mar. 24 - 26, 2009 85.45

94.98 94.70 91.71 14 of 27 hrs Week 4 Apr. 07 - 09, 2009 97.13 92.60 97.44 95.72 21 of 27 hrs Week 5 Apr. 21 23, 2009 87.47 89.87 95.65

91.00 8 of 27 hrs Week 6 May 5 7, 2009 94.34 94.47 91.87 93.56 13 of 27 hrs FIT III 02/07/20 Date Day 1 Day 2 9 Day 3

Average Convergence % for all Test Hours 100% Convergence Achieved Lead from the front LFC Texas Nodal Appendix: Telemetry & State Estimator Overview of Reports, Processes, and Data http://nodal.ercot.com 10 Lead from the front Texas Nodal 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 Lead from the front Texas Nodal 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 Lead from the front Texas Nodal 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 [email protected] FIT II & FIT III Assessment reports are posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html http://nodal.ercot.com 13 Lead from the front

Texas Nodal Telemetry Dashboards Telemetry Dashboards } http://nodal.ercot.com 14 Lead from the front Texas Nodal Telemetry Reporting QSER/TDSP Dashboard QSER & TDSP Dashboard Questions may be sent to: [email protected] http://nodal.ercot.com 15 Lead from the front Texas Nodal 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: [email protected] The number of unobservable buses in the system with all pseudo measurement removed. The number of current unobservable buses in the system that have a load at the station where telemetry is required to make the bus observable. Buses that are unobservable due to a PUN load at the station. http://nodal.ercot.com 16 Lead from the front Texas Nodal 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: [email protected] http://nodal.ercot.com 17 Lead from the front Texas Nodal SE Convergence Supporting Information on EDW MIS Click on More State Estimator Reports and Extracts http://nodal.ercot.com 18

Lead from the front Texas Nodal SE Convergence Supporting Information on EDW MIS Click on More State Estimator Convergence Rate Reports http://nodal.ercot.com 19 Lead from the front Texas Nodal 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 Lead from the front Texas Nodal 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/d ocuments/index.html Questions can be sent to [email protected] http://nodal.ercot.com 21 Lead from the front Texas Nodal New Telemetry Point Addition Process MP has submitted &

completed Model Change ERCOT ICCP Team receives and processes each Service Request MP (QSER or TSP) has new ICCP point to activate ICCP Standards Questions? Yes MP Consults ICCP Handbook to determine data point names Service Request Issues? No No MP fills out ICCP Change Request Form

ERCOT ICCP Team makes changes to ICCP MP creates a Service Request via the Texas Market Link on ERCOT.com ERCOT ICCP Team notifies the MP upon completion of the Service Request Yes ERCOT ICCP Team contacts MP to confirm the changes MP attaches completed ICCP Change Request form to Service Request http://nodal.ercot.com 22 Lead from

the front Texas Nodal Current Telemetry Issue Process ERCOT or Market Participant detects Telemetry, ICCP or other System Issue Contact ERCOT Shift Engineer @ 512-248-6345 Yes Market Participant investigates to determine correct ability Requires ERCOT assistance to resolve? Yes During FIT? No Contact ERCOT ANA by email

[email protected] for assistance ERCOT Analyzes Issue and determines corrective action ERCOT Contacts MP to Affect Correction No Issue Resolved? MP Corrects Issue No Yes Done http://nodal.ercot.com 23 Lead from the front Texas Nodal

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