The meeting discussed the second reading and updates for Handbook #3, focusing on running SCED with real data inputs.
The importance of "monitored days" was highlighted where ERCOT will ensure current production transmission constraints are accurately reflected in RTC SCED.
Three reports will be published during monitored days:
SCED Shadow Prices and Binding Transmission Constraints
LMPs by Resource Nodes, Load Zones and Trading Hubs Market Trials
Modify Real-Time ORDC and Reliability Deployment Price Adders and Reserves by SCED Interval
There's a need to define when participants should input data to achieve reasonable SCED results, suggesting Tuesdays and Thursdays, 9 to 5, as monitored days.
An alternative approach was considered for monitored days to be on Tuesdays and Thursdays during the first month and Monday through Friday during the second month.
The meeting sought feedback on how realistic participants wanted the market trials to be, considering they will inform the realism with their input.
Blake Cole from LCRA requested an additional month to plan and provide feedback.
Transmission constraints securing in SCED and RTC SCED will be automated, aiming to reduce manual intervention, and ensure realistic market conditions.
Participants were urged to submit realistic energy, AS offers, and telemetry to support the trials.
Handbook #4 contains numerous updates and has caused some confusion among attendees.
Meetings were held with various teams to clarify objectives and updates.
The main goal is to conduct telemetry tests on a selected set of resources instead of an entire fleet.
Tests will focus on ERCOT's telemetry and UDSP point readiness, with subsets of resources participating.
Steps include scheduling test windows, identifying testing resources, and ensuring telemetry setup is representative.
QSEs are expected to cooperate with the scheduled timeline and adjust ancillary service obligations.
Tests are planned between 10 AM and 2 PM to minimize rescheduling risks.
Testing involves verifying QSE's ability to transmit telemetry, not necessarily output movement.
Two test approaches proposed: observed tests by ERCOT or self-tests by QSEs.
Post-test evaluations will determine if resources communicated and followed UDSP signals appropriately.
Goal is for 98% of QSEs to demonstrate successful resource telemetry testing, and mitigation plans in place for remaining 2% to address in next trial phase.
Feedback on the proposal is invited, with further discussions scheduled for next month's meeting.
Regular market trial meetings are planned for continued evaluation and feedback.
▶️6 - Training Slides Review (Present to RTCBTF for any feedback)
Real-time energy and AS awards, eliminating the SASM process, and new telemetry changes.
Load resources will now be able to self-provide in the AS market if they have armed UFRs.
There will be no proxy offers for AS for load resources; they will need to actively manage their offers.
For CLRs, Resource-specific deployments replace the QSE-level deployments
Participation in the day-ahead market will remain similar, but with a focus on no specific resource-level obligations for load resources.
No additional qualification testing is anticipated beyond existing requirements.
Changes in ASDCs and COPs were highlighted, with a move towards automated deployment by scans without a look-ahead.
Restructure of some telemetry statuses to simplify online/offline resource status.
Discussion on self-provisioning limits, ECRS, and the implications of armed/unarmed relays for load resources.
Operational details and constraints for load resources were reviewed with specific insights into how this will be managed within SCED.
There was an extensive discussion on potential deployment scenarios and handling instructions, including manual deployment and resource recalls.
Importance of NCLRs understanding and complying with new market participation rules.
The retirement announcement of Steve Krein, a key contributor to the discussion, who was thanked for his long service. Attendees expressed appreciation for his contributions.
Detailed discussions on AS changes and operational changes.
Explained current AS procurement process and transition to RTC+B system with optimized real-time management.
Highlighted the inefficiencies in the current SASM process.
Explained market timeline changes and the operation between SCED and RTC.
Reviewed the RTC+B concepts including SCED optimization and market settlements.
Provided updates on QSE responsibilities and telemetry changes under RTC.
Discussed AS Dispatch and resource-specific operations.
Described different scenarios for AS management, including regulations and non-spin transitions.
Reviewed operational changes for generation and load resources, focusing on status classifications.
Addressed manual and automated AS dispatch mechanisms.
Outlined changes to UDSP, resource deployments, regulation allocations, and explained synchronization considerations.
Provided examples illustrating existing vs. RTC AS processes.
Responded to several participant questions concerning AS market operations and telemetry, emphasizing policy and procedural implications.
Mentioned that feedback and questions for further clarifications should be sent to RTCB@ercot.com.
Discussed the financial aspect of AS trades and its operational management, addressing potential AS imbalances and real-time market settlement implications.
