market trials real-time market / lfc

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Market TrialsReal-Time Market / LFC

Weekly Update

June 25, 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 8-Hour LFC Test 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– 06/25/2010 5:00 – 10:00 P.M.

• Hardware site failover and application patch deployments are being planned during this period and will affect availability of following application services:

– OS / OS UI– MMS / MM UI– EMS– MIS– EWS

Unplanned Outages– 06/21/2010 08:00 A.M – 06/23/2010 03:00 P.M.

• Latency with EWS asynchronous notifications were noted during this time period due to a configuration issue, which was immediately addressed

– 06/21/2010 2:00 – 5:30 P.M.• Intermittent errors with report listings were noted on MIS Report & Extract

landing page. The root cause is being investigated– 06/22/2010 4:00 – 4:30 P.M.

• Issues with the Market Application server resulted in some bidset submission getting timed out. After the backup instance was activated, the bidset submissions continued to flow as expected. The root cause is being investigated.


Known Issues

Recently Opened Issues• NP8-501-Monthly Resource Energy Deployment Performance Report (MIS

Certified Report)

– Report is failing with an error message

– Affects EDW

• Queries for updated Resource parameters returning rounded values

– After updating Resource Parameters with new values that include a decimal place, users are seeing rounded values returned when they query for the updated parameters (via either Web Services or Market Manager UI)

– The values are being captured correctly in the MMS database, but are returning incorrectly owing to a rounding issue in EIP

– This issue discovered for Ramp Up Rate, Ramp Down Rate, and Break Point for both Normal and Emergency Ramp Rates

– Affects EIP


Known Issues

Recently Closed Issues• NP6-620-CD - State Estimator 15-minute Average of Loads (MIS Secure

Report)

– The report was failing with an error message whenever the report is empty

– Affected CDR

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

– Report was not creating

– Affected CDR

• NP6-905-Settlement Point Prices at Resource Nodes and Hubs and Load Zones

– For some reports, the same data from a previous interval was being reported for the current interval due to issue with CDR query

– Affected CDR


Known Issues

Recently Closed Issues (continued)• The following MT3 Reports were previously unavailable on nodal MIS:

– NP3-766 Generic Transmission Limits

– NP8-146 Critically Important Telemetry Availability

– NP8-284-ER QSE ICCP Link Availability Statistics Report

– NP8-510 Dispatch Instructions Compliance Metrics

– NP16-728 Weighting Values of Pricing Components

– NP9-482 Real-Time Market Short Pay Invoice Plan


Standing Reports and Updates: General Reminders / Updates

Reminders/Updates• Network Model Update

– The current system loaded from the model 06/15/10– Next scheduled load is 07/01/10

• EMS Alerts– Beginning week of 6/28, ERCOT will be testing EMS alerts on Tues. and Thurs. of

each week, 10:00 – 11:00 am – Submit any questions to [email protected]

• Artifact Updates– The following artifacts have been updated as of 6/25

• Real-Time Known Issues List• SPP and RTRMPR Issues Tracking• Real-Time Market/LFC Market Trials Handbook

– Updated to reflect dates per current Market Trials schedule– Note: 48-Hour LFC Workshop moved to July 8

• 48-Hour LFC Approach• 2-Hour LFC Test Report

– These updated artifacts will deploy overnight to the Readiness Center at http://nodal.ercot.com/readiness/markettrials/rtm/index.html:

04/20/23


Real Time Market / LFC Update



SCED Week 21•System Lambda at $2161 6/18 15:20 (63 MW left in non-proxy EOC) ($1318 to $2338 LMP range)

• Three constraints (shadow prices of $2800 and $3500)•SL at $2250 offer cap for 126 intervals on 6/20-6/23•SL at $3001 power balance constraint SP for one interval on 6/22 11:30 ($735 - $3476) LMP range

• 385MW left until HDL; PB constraint violated by 145 MW• Two constraints had shadow price of $3500 each



SCED Week 21ThursdayConstraint 138_NAL_HAS_1, Contingency SMDOPHR5 (between 09:48 and 11:55 for 35 SCED runs), Constraint 6014__A, Contingency DGRSBNB5 (between 14:35 and 19:00 for 49 SCED runs), Constraint 6325__C, Contingency DSHREXP8 (between 13:00 and 19:00 for 75 SCED runs), Constraint 6377__A, Contingency DGRSBNB5 (between 11:13 and 12:15 for 17 SCED runs), Constraint 910__A, Contingency SJACREN8 (between 14:45 and 22:40 for 58 SCED runs), Constraint FTW_W_DE_1, Contingency DRNKW_D5 (between 11:47 and 12:15 for 8 SCED runs), Constraint NICOLE_OAKC1_1, Contingency SABMBLU5 (between 12:53 and 17:55 for 11 SCED runsConstraint W_TO_N, Contingency BASECASE (between 10:50 and 15:40 for 53 SCED runs) FridayConstraint 1660__A, Contingency DAUSGAR5 (at 06:20 for 1 SCED run) Constraint 1660__A, Contingency DAUSSND5 (between 12:55 and 14:00 for 3 SCED runs) Constraint 1800__A, Contingency DGRSBNB5 (between 08:45 and 11:20 for 26 SCED runs) Constraint 6856__B, Contingency SFSHOKL5 (between 22:25 and 23:55 for 14 SCED runs) Constraint 6915__A, Contingency SMOSHLT8 (between 13:30 and 18:30 for 57 SCED runs) Constraint 910__A, Contingency SJACREN8 (between 15:05 and 18:35 for 43 SCED runs) Constraint 910__D, Contingency SJACREN8 (at 10:05 for 1 SCED run)Constraint FL_PT_25_1, Contingency S_FB_EB8 (between 13:10 and 19:15 for 74 SCED runs)Constraint W_TO_N, Contingency BASECASE (between 09:25 and 09:50 for 2 SCED runs SaturdayConstraint 203T260_1, Contingency DAUSSND5 (between 11:10 and 15:55 for 46 SCED runs)Constraint 39T188_1, Contingency DFERCOR8 (between 16:41 and 18:00 for 16 SCED runs)Constraint 6856__B, Contingency SFSHOKL5 (between 00:00 and 23:55 for 112 SCED runs)Constraint W_TO_N, Contingency BASECASE (between 02:15 and 02:40 for 2 SCED runs). SundayConstraint 6856__B, Contingency SFSHOKL5) caused LMP divergence between 00:00 and 05:10 for 63 SCED runs MondayConstraint 138_NAL_HAS_1, Contingency SMDOPHR5 (between 14:45 and 23:55 for 111 SCED runs)Constraint 1775__C, Contingency DELKMLS5 (between 14:45 and 20:05 for 65 SCED runs)Constraint 6856__B, Contingency SFSHOKL5 (between 20:50 and 23:05 for 22 SCED runs).



SCED Week 21

TuesdayConstraint 138_NAL_HAS_1, Contingency SMDOPHR5 (between 00:00 and 23:55 for 183 SCED runs)Constraint 6475__F, Contingency SMDLODE5 (between 15:59 and 16:10 for 4 SCED runs)Constraint 931_C_1, Contingency DSHREVR5 (between 12:39 and 20:35 for 96 SCED runs)Constraint AIRLIN_CABANI1_1, Contingency SHOLB_D8 (between 11:27 and 18:35 for 23 SCED runs)Constraint FTW_W_DE_1, Contingency DRNKW_D5 (between 10:03 and 10:05 for 2 SCED runs)Constraint W_TO_N, Contingency BASECASE (between 21:25 and 22:30 for 14 SCED runs). WednesdayConstraint 138_NAL_HAS_1, Contingency SMDOPHR5 (between 00:00 and 23:55 for 182 SCED runs)Constraint 6310__D, Contingency DSHREVR5 (between 09:32 and 21:05 for 76 SCED runs)Constraint AIRLIN_CABANI1_1, Contingency SHOLB_D8 (between 11:35 and 15:45 for 23 SCED runs)Constraint FREDER_AT2, Contingency SFREGIL8 (between 12:15 and 13:20 for 12 SCED runs)Constraint MGSES_MR4H, Contingency XMGS58T2 (at 18:25 for 1 SCED run)

Missed MIS LMP Reports


• 6/18 – Failover activities• 6/22 – MMS event manager failure

6/18/10 18:05:31 6/18/10 18:50:27 6/22/10 16:00:376/18/10 18:10:31 6/18/10 18:55:27 6/22/10 16:05:306/18/10 18:15:34 6/18/10 19:00:37 6/22/10 16:10:276/18/10 18:20:31 6/19/10 17:45:38 6/22/10 16:15:316/18/10 18:25:31 6/20/10 10:40:26 6/22/10 16:20:316/18/10 18:30:29 6/21/10 11:55:27 6/22/10 16:25:286/18/10 18:35:29 6/21/10 20:30:31 6/22/10 16:30:306/18/10 18:40:31 6/22/10 04:20:27 6/22/10 16:35:326/18/10 18:45:40 6/22/10 12:10:31


LFC 8-Hour Test Update

LFC Test Overview for June 17th


Constraint List

Number Constraint NameContingency Name Limit

Max Shadow Price

From Station To Station

From kV To kV Start Time End Time

1 138_NAL_HAS_1 SMDOPHR5 189 3500 TNNALVIN HASTINGS 138 138 9:48:18 AM 11:55:27 AM2 W_TO_N BASECASE 1600 5000 10:50:31 AM 3:40:27 PM3 FTW_W_DE_1 DRNKW_D5 216 3500 W_DENT FTWORTH 138 138 11:47:46 AM 12:15:28 PM4 NICOLE_OAKC1_1SABMBLU5 177 3500 NICOLE OAKC 138 138 12:53:56 PM 5:55:30 PM5 6325__C DSHREXP8 209 3500 SHRSW PRKRW 138 138 1:00:39 PM 7:00:43 PM6 910__A SJACREN8 127 3500 DCRTP RHOME 138 138 2:55:27 PM 10:40:36 PM7 6377__A DGRSBNB5 208 3500 BRTSW ORANS 138 138 11:13:18 AM 12:15:28 PM8 6014__A DGRSBNB5 1147 4500 GRSES JCKSW 345 345 2:35:37 PM 7:00:43 PM

17 Texas Nodal

ERCOT operational perspective

•The switching of control between systems went smoothly

•Frequency was controlled for duration of test by nodal systems

•Planned operational scenarios were executed as planned

•CPS1 scores were passing except for one hour

•ERCOT Operators able to manage numerous active constraints with SCED

Successes during test

18 Texas Nodal

Issues during test for ERCOT•Several issues were affecting calculation and transfer of shift factors from EMS to MMS •ERCOT is still working to resolve the issues as recently communicated to NATF:

• Issue #1 – Missing Shift Factors for constraints in SCED for brief period

• Shift Factors integration from EMS to MMS from1320-1339 had issues

• Shift factors were ignored by SCED for 19 minutes

• Dispatch closely monitored by Operators until resolved

• Issue #2 – Missing Shift Factors for Electrical Bus affect SPP calculation

• EMS integration did not properly provide electrical bus shift factors

• Load Zone, Hub, and Electrical Bus LMPs/SPPs incorrect

•Analysis is on going and will be communicated once more information is available

Issues during test

19 Texas Nodal

Issues during test for Market Participants

•Telemetry

• Inconsistencies between JOU owners (e.g., telemetry, COP)

• Incorrect Ancillary Service values in telemetry for Resource

• Incorrect Resource Status Codes

•Zonal Resource Plans not in agreement with Nodal

•Resource with nodal Output Schedule offering BES into zonal market

•Energy Offer Curves with invalid expiration dates/times

•Resources not following their nodal Base Points

•Resources not following regulation signals

•Incorrect HSL/LSL values telemetered

Issues during test

20 Texas Nodal

Continue analysis of 8-hour test and consider improvements to 48-hr test- Can discuss at next NATF

Week of July 548-Hour LFC Test Workshop

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

Next Steps for the 48-hour LFC Test


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 14 95.56

JUN 15 89.32

JUN 16 96.31

JUN 17 97.63

JUN 18 97.62

JUN 19 99.65

JUN 20 99.62

JUN 21 99.28

JUN 22 98.96

JUN 23 98.61


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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