market trials real-time market / lfc

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Market TrialsReal-Time Market / LFC

Weekly Update

June 18, 2010


Antitrust Admonition

ANTITRUST ADMONITION

ERCOT strictly prohibits Market Participants and their employees who are participating in ERCOT activities from using their participation in ERCOT activities as a forum for engaging in practices or communications that violate the antitrust laws. The ERCOT Board has approved guidelines for members of ERCOT Committees, Subcommittees and Working Groups to be reviewed and followed by each Market Participant attending ERCOT meetings. If you have not received a copy of these Guidelines, copies are available at the Client Relations desk. Please remember your ongoing obligation to comply with all applicable laws, including the antitrust laws.

DISCLAIMER

All presentations and materials submitted by Market Participants or any other Entity to ERCOT staff for this meeting are received and posted with the acknowledgement that the information will be considered public in accordance with the ERCOT Websites Content Management Operating Procedure.


Agenda

• Antitrust Admonition

• Environment Report– Planned / unplanned outages – Known Issues

• Standing Reports and Updates– General reminders / updates– RTM / LFC Update– LFC Calendar Update– State Estimator Convergence Statistics

• Question and Answers / General Discussion

ERCOT asks that Market Participants log into the WebEx session using their company name and then their name. This will allow ERCOT to take roll-call offline

Market Trials 2010 Roadmap



Environment Report: Planned / Unplanned Nodal Outages

Planned Outages• 06/18/2010, 6:00 - 7:30 P.M. (CDT)

– Hardware site failover is planned for this period and will affect availability of following application services:

• EWS ( Web Services)• OS UI• MM UI

Unplanned Outages• 06/15/2010, 12:55 - 1:20 P.M. (CDT)

– Application link to Market Manager system was unavailable on the MIS portal due an LDAP synchronization issue.

• 06/15/2010 01:00 P.M. - Ongoing– Users are currently unable to view TPO awards via the MM UI. An

application defect has been identified as the root cause and necessary fix is being addressed (the report is available as a downloadable file on MM UI and can also be obtained via EWS).


Known Issues

Recently Closed Issues• SPPs_RTM, the time of EWS response is incorrect when EWS connection is

through either HTTPS/SSL or Internal URL

– The "SPP at Hubs and Load Zones" report when pulled through web services uses an incorrect GMT offset of -6 (should be -5), which is causing the SPP data to line up incorrectly with the timestamp

– EIP

– This issue fixed in EWS 1.19L, which went to NPROD on June 11.

• NP8-501 Monthly Resource Energy Deployment Performance Report (MIS Certified Report)

– Additional Language is being added to the Report Info Tab to clarify that Source Data will not always be available for every resource every five minutes; also recommending code changes to appropriately account any missing intervals

– EDW


Known Issues

Recently Closed Issues (continued)• Update Weather Data section in EIP External Interfaces Specification to align

with CDR Report

– In a future update to the EIP External Interfaces Specification, the XML example in Section 4.3.31, Weather Data, will be aligned with the actual CDR Report by removing all weather-data tags except for <temperature></temperature> (the temperature data is the only data that needs to be provided in this report because it is the only data that is used in common by both the load forecasting and dynamic ratings applications).

– Corrected in v1.19M (http://nodal.ercot.com/readiness/sandbox/index.html)

– Becomes effective July 9

• Update Dynamic Ratings section in EIP External Interfaces Specification

– In a future update to the EIP External Interfaces Specification, the "2-hour" rating type identified in section 4.3.16, Dynamic Ratings, will need to be changed to "Emergency."

– Corrected in v1.19M (http://nodal.ercot.com/readiness/sandbox/index.html)

– Becomes effective July 9


Standing Reports and Updates: General Reminders / Updates

Reminders/Updates

• Real-Time Known Issues List

– The Updated Real-Time Known Issues List (as of 6/18) will deploy overnight to the Readiness Center (http://nodal.ercot.com/readiness/markettrials/rtm/index.html).

• Network Model Update

– The current system loaded from the model 06/15/10

– Next scheduled load is 07/01/10

• SPP and RTRMPR Calculations

– The updated tracking document (as of 6/18) for SPP and RTRMPR Issues is available on the Readiness Center at http://nodal.ercot.com/readiness/markettrials/rtm/index.html

04/21/23


Real Time Market / LFC Update



SCED Week 20• At $2250 price cap for 11 intervals on Thursday, 6/10• At $2250 offer cap for 2 intervals on Friday (14:25 and 15:25)• Saturday & Sunday – EMS outage, SCED not analyzed• Monday spike during AJO - Rio Hondo 345KV $3607.80 ($4500 SP, .8 SF)• Tuesday spike N/A (1 second PI recorder error) • Wednesday spike during Formosa 138kV/69kV xfrmr constraint -$2745.00 ($2800 SP -.99 SF)



SCED Week 20ThursdayConstraint CAGNON TRANSF AXFMR4H, Contingency XCAG58T3 (between 12:10 and 21:00 for 52 SCED runs)Constraint RAYMND_RAYMON1@RAYMOND1, Contingency SLA_RIO5 (between 09:40 and 11:30 for 18 SCED runs) FridayConstraint 138_NAL_HAS@TNNALVIN, Contingency SMDOPHR5 (between 09:10 and 09:45 for 8 SCED runs)Constraint 6475__F, Contingency SMDLODE5 (between 15:00 and 16:25 for 15 SCED runs)Constraint 910__D, Contingency SJACREN8 (between 16:50 and 21:30 for 57 SCED runs)Constraint 931_C_1, Contingency DWTRWLV5 (between 16:05 and 16:35 for 6 SCED runs).SaturdayConstraint 138_NAL_HAS_1, Contingency SMDOPHR5 (between 10:30 and 11:15 for 9 SCED runs)Constraint W_TO_N, Contingency BASECASE (between 00:00 and 23:55 for 146 SCED runs).SundayConstraint 138_NAL_HAS_1, Contingency SMDOPHR5 (at 14:10 and 14:15 for 2 SCED runs)Constraint 910__A, Contingency SJACREN8 (between 16:45 and 20:50 for 43 SCED runs)Constraint W_TO_N, Contingency BASECASE (between 00:00 and 20:40 for 101 SCED runs).MondayConstraint 910__A, Contingency SJACREN8 (between 10:05 and 22:45 for 35 SCED runs)Constraint 910__D, Contingency SJACREN8 (between 18:55 and 20:35 for 22 SCED runs)Constraint 931_C_1, Contingency DWTRWLV5 (between 13:43 and 16:30 for 30 SCED runs)Constraint AJO_RIOHON1_1, Contingency SNEDLON5 (between 16:10 and 16:30 for 5 SCED runs)Constraint TSL_FTW_1, Contingency DRNKW_D5 (between 09:15 and 13:05 for 40 SCED runs)Constraint W_TO_N, Contingency BASECASE (at 19:15 and 19:20 for 2 SCED runs). TuesdayConstraint 260_A_1, Contingency DGIBSNG5 (between 11:20 and 14:16 for 21 SCED runs)Constraint 931_C_1, Contingency DWTRWLV5 (between 14:02 and 18:35 for 60 SCED runs). WednesdayConstraint 1800__A, Contingency DGRSBNB5 (at 07:10 and 08:10 for 2 SCED runs)Constraint 6300__I, Contingency DSHREVR5 (between 10:00 and 11:25 for 18 SCED runs)Constraint 6325__C, Contingency DSHREXP8 (between 13:25 and 20:25 for 79 SCED runs)Constraint FORMOSA_R-22, Contingency XFO89T21 (at 20:15 for 1 SCED run).

Missed MIS LMP Reports


• 6/11-6/13 outages during software upgrade

6/11/10 9:45 6/11/10 22:45 6/13/10 11:156/11/10 22:00 6/11/10 22:50 6/13/10 11:256/11/10 22:05 6/13/10 10:15 6/13/10 11:306/11/10 22:10 6/13/10 10:20 6/13/10 11:356/11/10 22:15 6/13/10 10:35 6/13/10 11:456/11/10 22:20 6/13/10 10:45 6/13/10 11:506/11/10 22:25 6/13/10 10:50 6/13/10 11:556/11/10 22:30 6/13/10 10:55 6/13/10 12:256/11/10 22:35 6/13/10 11:05 6/13/10 12:306/11/10 22:40 6/13/10 11:10 6/14/10 13:05


LFC Calendar Update


8-Hour LFC Test Update

8-Hour LFC Test Update

Test Activities Approx Timeline

Market WebEx start 7:00 AM

ERCOT - MP pre-test troubleshooting period 7:00 AM – 10:00 AM

Test start 10:00 AM

Zonal-Nodal cutover 10:00 AM – 10:46 AM

System frequency controlled by nodal systems 10:46 AM – 5:10 PM

RRS Scenario 2:15 PM – 2:25 PM

EMBP Scenario 3:00 PM – 3:20 PM

Nodal-Zonal cutover 5:10 PM – 5:42 PM

Test end 5:42 PM

Market WebEx end 5:50 PM


LFC Calendar Update

LFC Calendar (MT5) – Upcoming Key Dates

• Week of June 21

– 2-Hour Test Report publishes to the Readiness Center

– 48-Hour LFC Approach Document has been completed and will publish to the Readiness Center the week of June 21 (target date is 6/23)

– Real-Time Market/LFC Handbook will be updated to align the MT 5.0 Schedule with current dates/scenarios

• June 21 – July 2

– Analyze results of the 8-Hour LFC Test

• Week of June 28

– 48-Hour LFC Test Workshop

• Week of July 20

– Conduct 48-Hour LFC Test (July 20, 21, 22)


State Estimator Convergence


State Estimator Convergence Update

State Estimator Daily Convergence Statistics(these percentages are graphed in the next slide)

Month Day % Convergence (Including Solved w/ Mismatch)

JUN 7 99.65

JUN 8 99.31

JUN 9 99.65

JUN 10 92.76

JUN 11 88.30

JUN 12 100

JUN 13 99.41

JUN 14 95.56

JUN 15 89.32


State Estimator Convergence Update


Q&A

Q&A / Open Forum


Appendix


URLS and EMAIL ADDRESS FOR SUPPORT

• URLs for accessing the Nodal Production systems

– MIS: https://mis.ercot.com/pps/tibco/mis/

– Market Manager: https://mis.ercot.com/pps/tibco/mis/ Click the ‘Applications’ tab in the upper menu. Link is in the ERCOT Applications portlet

– CRR: https://mis.ercot.com/pps/tibco/mis/ Click the ‘Markets’ Link in the upper menu. Click CRR in the Market sub menu

– EWS: https://misapi.ercot.com/2007-08/Nodal/eEDS/EWS


Market Trials Handbooks

• Market Trials Handbooks– Available on the Readiness Center at the following links

• Real Time Market / LFC covering Phase http://nodal.ercot.com/readiness/markettrials/rtm/index.html

• Outage Scheduler covering Phase http://nodal.ercot.com/readiness/markettrials/os/index.html

• CRR covering release Phase http://nodal.ercot.com/readiness/markettrials/crr/index.html

• Settlements / COMs covering Phase http://nodal.ercot.com/readiness/markettrials/coms/index.html

• Day Ahead Market http://nodal.ercot.com/readiness/markettrials/dam/index.html

LFC – Test Overview & Setup: Quick Start Resources

• Deployment of Balancing Energy Service (BES) Capable NSRS for Quick Start resources during the LFC test

– Prior to the resource being asked to come online in Zonal, the QSE should:• telemeter a Non-Spin Schedule and Responsibility (NSSC and NSRS) of 0• telemeter a resource status showing the resource as offline; and• telemeter an LSL of 0

– If the QSE receives an energy deployment in Zonal, the QSE should start that resource and telemeter a resource status of online (ON) as soon as they are capable

– Once the resource is “ON” with net MW > 0, the resource will be available for SCED dispatch and the resource will be dispatched based on the energy offer curve

– After the resource reaches it’s physical LSL, the QSE should reflect that value through the telemetered LSL and should leave it at that value

– Once Zonal indicates that the resource should go offline, the resource should begin ramping down

– When the resource goes offline, the QSE should update the telemetered resource status to offline and then change the telemetered LSL to 0

• The QSE also has the option to not provide BES-Capable NSRS during the hours of the test

LFC – Test Overview & Setup: Congestion Management

• Manual dispatch instructions during the LFC test

– Beginning two hours prior to the LFC test, ERCOT will stop using OC1s and OOMEs and plans to use OC3s to manage congestion

• The one exception to this is that ERCOT will continue to use OC1s for the W-N stability limit (non-thermal IROL for NERC)

• ERCOT has created and tested a constraint for this limit in the Nodal system which can be activated for SCED as needed and should provide similar dispatch to the OC1s

– ERCOT may be required to use Zonal manual dispatch instructions to solve congestion

– ERCOT will set the Nodal Base-Point to match the Zonal manual dispatch instruction

– The QSE will continue to follow the Nodal Base Point if they are still under Nodal control

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