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Market Trials DAM/RUC/SASM

Get the latest updates on ERCOT's market trials, DAM/RUC/SASM summaries, QSE activities, environment reports, outages, and more.

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Market Trials DAM/RUC/SASM

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  1. Market TrialsDAM/RUC/SASM Weekly Update June 4, 2010 http://nodal.ercot.com 1

  2. 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. http://nodal.ercot.com 2

  3. Agenda • DAM/ RUC/SASM summary • QSE Activities for Next Week • General Reminders/Updates • Environment Report • Outages • Known Issues • Question and Answers / General Discussion • Appendix 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. http://nodal.ercot.com 3

  4. Market Trials 2010 Roadmap http://nodal.ercot.com 4

  5. Submission Overview for May 28 DAM submission overview • 183 QSEs participated for Op Day 5/29 • Energy Bids in the range of 30,421 to 55,118 MW per hour • Cleared 24,020 to 37,042 MW per hour • Four major Load Zone prices ranged from $22.84 to $46.05 http://nodal.ercot.com 5

  6. Submission Overview for May 28 http://nodal.ercot.com 6

  7. RUC Overview for Op Day May 29 RUC overview • DRUC published 84 Resource commitments for Op Day May 29. • HRUC published 87 Resource commitments for Op Day May 29. • Not operationally approved based on operator experience. • Results were published to exercise market and ERCOT downstream systems (as described last week) • RUC clearing engine software results were consistent with input data • Status update on these issues will be discussed later http://nodal.ercot.com 7

  8. Submission Overview for June 1 DAM submission overview • 184 QSEs participated for Op Day 6/2 • Energy Bids in the range of 26,683 to 48,673 MW per hour • Cleared 22,311 to 33,022 MW per hour • Four major Load Zone prices ranged from $18.54 to $45.88 http://nodal.ercot.com 8

  9. Submission Overview for June 1 http://nodal.ercot.com 9

  10. RUC Overview for Operating Day 6/2 RUC overview for Op Day 6/2 • DRUC published 115 Resource commitments for Op Day June 2. • HRUC published 69 Resource commitments for Op Day June 2. • Not operationally approved based on operator experience. • Results were published to exercise market and ERCOT downstream systems (as described last week) • RUC clearing engine software results were consistent with input data • Status update on these issues will be discussed later http://nodal.ercot.com 10

  11. Submission Overview for June 2 DAM submission overview • 213 QSEs participated for Op Day 6/3 • Energy Bids in the range of 27,640 to 48,399 MW per hour • Cleared 21,249 to 31,174 MW per hour • Four major Load Zone prices ranged from $19.57 to $46.30 http://nodal.ercot.com 11

  12. Submission Overview for June 2 http://nodal.ercot.com 12

  13. Submission Overview for June 2 http://nodal.ercot.com 13 • Note that on Wednesday, we had an issue with the AS award report creation and notification event. This was resolved by 3:30 pm. This was caused by an error with the AS MCPC report internally (was posted on time on the MIS), which is used to create the AS award report. Root cause is still under investigation. • Notifications were sent late on this date • Awards were not immediately available for query

  14. RUC Overview for Operating Day 6/3 RUC overview for Op Day 6/3 • DRUC published 36 Resource commitments for Op Day June 3. • HRUC published 33 Resource commitments for Op Day June 3. • Not operationally approved based on operator experience. • Results were published to exercise market and ERCOT downstream systems (as described last week) • RUC clearing engine software results were consistent with input data • Status update on these issues will be discussed later http://nodal.ercot.com 14

  15. Submission Overview for June 3 Submission overview • 196 QSEs participated for Op Day 6/4 • Energy Bids in the range of 27,590 to 51,289 MW per hour • Cleared 23,294 to 34,416 MW per hour • Four major Load Zone prices ranged from $19.71 to $43.02. http://nodal.ercot.com 15

  16. Submission Overview for June 3 http://nodal.ercot.com 16

  17. RUC Execution Overview for Operating Day 6/4 RUC execution overview: • No DRUC due to operational scenario • HRUC will be run at 3 pm today Operating Day June 4 http://nodal.ercot.com 17

  18. RUC Execution Overview for the week RUC Summary for the week (no new updates): • ERCOT issues • Known issue regarding outages that close breakers • Phase shifters are not modeled in MMS • Work around is to change tap settings in the database to relieve overloads • Continuing to look at data issues with line ratings, load distribution factors, breaker statuses • Next MMS patch is currently being tested in iTest • COP submission issues • Configurations that were OFF but could not be started because all the startup configurations were OUT • CC configuration LSL greater than aggregated step-up transformer rating • Multiple configurations ON • JOU resource statuses are not consistent or no COP submitted for one owner (considered OUT) • Inconsistency with zonal resource plan • COPs with HSL = 0 (may be valid – for example, wind units with no wind forecasted) http://nodal.ercot.com 18

  19. Recap this week’s Operational Scenarios • Operational Scenarios completed this week as planned: • On June 1, RMR Three-Part Offers were used in DAM • System Operators recommended one RMR unit for TPO creation. • Unit was not awarded by DAM • On June 3, simulate RUC failure; issue commitment/decommitment instructions through VDI • Reminder that the settlement of these RUC instructions will not occur during this operational scenario. We will repeat the scenario during August to capture the settlements of RUC instructions through VDI • This was a technical test wherein each QSE received one electronic VDI instruction • The VDI notification was delayed. The first was sent at 3:05 and was delivered at 3:31 pm. The final message was delivered at 4:26 pm. Production support is investigating the cause of the delay. • Text of the notification: CM-VDI-NOTF Verbal Dispatch Instructions for acknowledgement have been sent for Resource <Resource_Name> • The VDIs will remain available for querying for up to 6 more days. Please take this opportunity to test the VDI acknowledgment process. http://nodal.ercot.com 19

  20. Next Week’s Activities Next week – Op Days are 6/8-6/11 (due to outage on Friday discussed later in the presentation) DAM executing on 6/7-6/10 • No guardrails - Bids/offers should be reasonable • COPs should reflect zonal throughout the week. We are requesting no COP updates as a result of nodal market processes. • Operational Scenarios: • On June 8, ERCOT will simulate a DAM failure • Issue notification to all QSEs • Shift AS procurement to SASM (QSEs will need to resubmit their self-arrangements once the SASM opens, which must be no earlier than 6 pm (adjustment period)). • On June 10, execute two SASMs for the same Operating Hour. Also, simulate increased load forecast between DAM, DRUC, HRUC • Optional AS self-arrangement for the SASMs • First SASM will open at 9 am for Increased AS Plan for Operating Hours 12-18, all AS types • Second SASM will open at 1 pm for Increased AS Plan for Operating Hour 16, all AS types http://nodal.ercot.com 20

  21. Next Week’s Activities DRUC executing on 6/7-6/10 after DAM HRUC and SASM executing on 6/8-6/10 • HRUC and SASM • HRUC will be executed on Tuesday, Wednesday, and Thursday at 1 pm (target Operating Hours will be the balance of the Op Day) • SASM will be opened if needed based on system conditions (with the exception of operational scenarios) http://nodal.ercot.com 21

  22. Next Week’s Activities Next week • Reminder that we transfer zonal outages to nodal every week on Monday • This transfer represents approximately 85% of the actual zonal outages • Again, next week ERCOT may do workarounds outside the normal business process to sidestep any issues that arise. Furthermore, we may approve the results of the RUC software even if the result is operationally unreasonable. The purpose of this is to exercise settlement and billing determinants related to RUC. http://nodal.ercot.com 22

  23. General Reminders/Updates • Network Model Update • Last data load was 6/1 • An updated settlement points and MP short name list was posted for the 6/1 load at http://nodal.ercot.com/readiness/markettrials/index.html • Next scheduled load is 6/10 Data issues already resolved: • FIP/FOP had been static since May 20. The adapter was publishing the same value every day. This was corrected on Tuesday and is now sending updated Platts data. • Issues with the data load on 6/1 • Inconsistencies with registration data and network model for three resources that caused the QSEs to be unable to submit for those resources • Workarounds put in place and QSEs have been contacted Data issues resolving with next data load on 6/10 • Incorrect split bus contingency definition was identified http://nodal.ercot.com 23

  24. Support Metrics Market Participant Inbound Questions * This week, 22 out of 224 questions were responded to outside of the 24 hour time frame. http://nodal.ercot.com 24

  25. Day-to-day operations summary: Planned / Unplanned Outages Outages • Planned Outages • 06/11/2010 • The following systems will be unavailable during the supported window in order to aid with a major system maintenance upgrade • Market Manager • OS UI • EWS • Unplanned Outages • 06/02/2010 1:30 P.M. – 3:30 P.M. • MPs were unable to download AS Awards for operating day 06/03 as a result of a report posting error. • 06/03/2010 03:30 P.M. – 03:40 P.M. • Market Manager users may have experienced connectivity errors while trying to submit or query for transactions . • 06/03/2010 03:00 P.M. – 04:00 P.M • Latency with VDI notification deliveries were experienced during this time period. Teams are working on determine cause of the issue. http://nodal.ercot.com 25

  26. Environment Report-Known Issues Full DAM/RUC/SASM known issues list will post every Friday night at http://nodal.ercot.com/readiness/markettrials/dam/index.html New DAM/RUC/SASM known issues • No new known issues to report http://nodal.ercot.com 26

  27. Summary of DAM/RUC/SASM market trials Next week: - Focus on quality will continue to supersede timelines (i.e., may re-run DAM/RUC late to get better solution) • In short-term need COPs to reflect actual plans (to compare with zonal) • On Wednesday, we will overwrite COPs using zonal resource plan data prior to running DRUC for Operating Day 6/10. • More communication between ERCOT and MPs to address submission/data issues • This week we did contact some QSEs to address zonal/nodal COP inconsistencies. We will continue to do this periodically to assist QSEs in identifying mismatches. • There were questions about how to reflect quick start units that are in zonal as online with 0 MW resource plan in the nodal COPs • For our purposes in testing RUC right now in market trials, set these quick start units to ON if they are ON in zonal. RPRS does consider these units online when studying reliability. http://nodal.ercot.com 27

  28. Q&A Q&A / Open Forum http://nodal.ercot.com 28

  29. Appendix Appendix • Pre- and post-DAM reports • Special Topics http://nodal.ercot.com 29

  30. Other Note: • All transactions will be supported. • Trade submission and confirmation (Energy, Capacity and AS Trades) may be exercised at this time. • DAM notifications will be active. • Phase 2 Validation process will be active and supported. • QSE transactions that do not follow the guidelines are subject to cancellation at ERCOT’s discretion. • ERCOT may run DAM on non-supported days. No QSE participation is requested, and ERCOT staff will not be available to answer questions regarding the outputs of these non-supported processes. • CRR information from the market trials auction will be integrated into the market system. CRR Offers (by NOIEs) must contain CRR IDs from this auction in order to be valid. http://nodal.ercot.com 30

  31. Supplemental Materials http://nodal.ercot.com 31 Slide 31

  32. Report Postings Posted by 6 am: • Ancillary Services (AS) Plan • Load Ratio Shares (these will be static based on Zonal production data as of October 16, 2009) * • AS Obligations * • Wind Generation Resource Power Potential (WGRPP) forecast * and Aggregated WGRPP forecast • List of all Settlement Points and the mapping to Electrical Buses • Load forecasts for ERCOT system, Weather Zones and Load Zones • Load forecast distribution factors • Distribution Loss Factors and forecasted Transmission Loss Factors • Weather assumptions * Denotes MIS Certified reports http://nodal.ercot.com 32

  33. Report Postings Posted after each DAM: • Awards (AS Offers, Energy Offers, DAM Energy-Only Offers, DAM Energy Bids, CRR Offers, and PTP Obligation Bids) * • DAM Clearing Price for Ancillary Services (MCPC) • Day-Ahead hourly Settlement Point Prices (SPPs) • Day-Ahead hourly Locational Marginal Prices (LMPs) • Shadow Prices • Quantity of AS Offers • Aggregated AS Offer Curve • Total quantity of energy (in MWh) bought and sold in DAM See DAM Handbook for a list of all DAM/RUC/SASM reports available starting in Phase 4.0 - http://nodal.ercot.com/readiness/markettrials/dam/index.html. See MIS Handbook for a comprehensive list of reports available - http://nodal.ercot.com/readiness/markettrials/mis/index.html. * Denotes MIS Certified reports http://nodal.ercot.com 33

  34. Special Topics Phase 2 Validation reports and process • Phase 2 validation re-evaluates all submitted transactions at 7 am in the day-ahead with updated information, such as AS Obligation, CRR ownership, credit limits, etc. • If there is a validation error, ERCOT will cancel the transaction • We send a notification that a Phase 2 report is available for a particular transactions type, and notification containing the cancellation for the transaction. • You can query for the Phase 2 report via web service or on the Reports page of the Market Manager in order to view the reason for the cancellation. • Correct and resubmit prior to 10 am. • Note that submissions are locked out during the Phase 2 process, which is currently taking about 15 minutes to complete. http://nodal.ercot.com 34

  35. Special Topics Day-Ahead Self Commitment DAM clearing engine treats your TPO differently if you submit Startup and Minimum Energy (SU/ME) costs as $0 vs. NULL • If you submit with SU/ME as $0, DAM engine treats this as a normal offer where the QSE is not requesting SU/ME to be covered. HSL/LSL constraints will be respected. Also, if you are selected for an online Ancillary Service, you will also be awarded at least LSL on your offer curve. • If you submit with SU/ME as NULL, DAM engine is signaled to ignore the HSL/LSL constraints for the resource. In this scenario, the offer curve submitted will start at 0 MW and go to the max MW quantity desired – again, DAM will ignore LSL/HSL constraints. If the offer curve submitted doesn’t start at 0 MW, it will be extended to 0 MW by DAM. If the resource is selected for Ancillary Services, no requirement to also award TPO at LSL (since no LSL constraint honored in this case). http://nodal.ercot.com 35

  36. Special Topics Day-Ahead Self Commitment The purpose of the NULL: It allows a QSE to use part of a Resource to serve its own load, and then offer in the rest to the DAM and enable the offer to be co-optimized with its AS Offer. Example: A Resource has 100 MW LSL and 400 MW HSL, and the QSE has already committed 300 MW of the Resource through some other mechanism. The QSE wishes to offer the remaining 100 MW, which would otherwise be ignored due to the 100 MW LSL. Then going into real-time, so QSEs will need to update their TPO to cover the full capacity of the resource, from LSL to HSL, rather than from 0 MW. To do that if the resource is awarded in the DAM, the QSE must provide a reason code, which is DSCM. This functionality came about due to TPTF subgroup on the issue. It has not yet been added to the protocols but will during our protocol traceability/cleanup effort. http://nodal.ercot.com 36

  37. Special Topics Bid/Offer efficiencies • ERCOT has identified efficiencies in Bid/Offers submission with regard to the format of submission • This applies to all transaction that use a Bid ID or an Offer ID (Energy Only Offers, Energy Only Bids, PTP Obligation Bids, and CRR Offers) • Preference is for QSEs to submit the same Bid/Offer ID for each hour in the submission, versus submitting a different Bid/Offer ID for every hour. The market system treats the submission the exact same way, regardless of which format is used • Using the preferred format will optimize DAM system performance • For xml examples detailing this issue, please view a document that will be posted along with this presentation on the calendar page at http://www.ercot.com/calendar/2010/04/20100409-MT • This was discussed at NATF 4/6, we send an email to the nodal technical contacts that we have on file for all QSEs, and we will add it to the External Interfaces Specification http://nodal.ercot.com 37

  38. Special Topics JOUs and COP consistencies • In DAM, if the different owners of the jointly-owned unit have submitted conflicting COP statuses for the current day, online statuses will overwrite offline statuses when DAM is determining the initial condition of the unit (i.e., is the unit online or offline at the start of the next operating day). • In RUC, if the different owners have conflicting COP statuses for the next operating day: • If any owner has OUT status for any hour then the unit is considered OUT. • If all owners have submitted a COP, and at least one of them has an online status in a particular hour then the resource status for the unit is online (unless any owner has OUT) http://nodal.ercot.com 38

  39. Special Topic – Jointly Owned Units JOUs are modeled as a single physical unit • DAM uses the separate logical resources when evaluating energy and ancillary services, but Network Security Monitoring (NSM), which is a sub-process of DAM, must consider the physical unit. • http://nodal.ercot.com/docs/pd/ida/wp/sgrm/IDA041_White_Paper_for_Split_Generation_Resource_Modeling_v1.doc JOUs offering into DAM • Owners offer their share into the DAM separately, but the physical unit must be committed together • All owners have to offer in the unit (energy or AS) to the DAM or else it cannot be committed to any owner (one exception for a self-commitment scenario described below). DAM must make a commitment decision about the physical unit, which it cannot do without offers from all the owners. • Self-commitment examples (assume three owners) – remember that self-committing by submitting Startup and Minimum Energy Costs as ‘NULL’ (leaving them out of the submission altogether rather than submitting zeroes) signals the DAM software that it doesn’t need to make a commitment decision and to ignore resource constraints. • If two owners self-commit (startup/minimum energy costs are NULL) and the other submits nothing, the unit can be awarded without making a commitment decision. • If one owner self-commits, another submits a TPO with startup/minimum energy costs, and the third submits nothing, the unit cannot be awarded • If one owner self-commits, and the other two submit TPOs with startup/minimum energy costs, the unit can be awarded after making a commitment decision based on the resource constraints and the submitted startup/minimum energy costs. • Note that if self-committed, do not submit an OFFNS offer. That offer negates the self-commitment and the DAM software will not consider it as a self-committed resource (since the QSE is requesting ERCOT to evaluate the unit offline) http://nodal.ercot.com 39

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