ERCOT RTC+ B SCED Tool Progress Update - Production-scale Tool Refresher
This update provides a detailed overview of the ERCOT RTC+ B SCED tool progress, focusing on a production-scale tool refresher. It includes updates on optimization details, capabilities, limitations, and remaining work. Key topics covered are decision variables, base points, AS awards, and more in the optimization system. Learn about the latest developments and insights in the field of resource capacity and system optimization.
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Presentation Transcript
ERCOT RTC+B SCED Tool Progress Update Jonas Kersulis RTCBTF July 17, 2024
Outline - Production-scale tool refresher - Update on optimization details - Update on capabilities and limitations - Summary of remaining work; estimated timeline 2 2 Public
Refresher: Overview of Production-scale Tool Core Outputs Inputs Optimization System Data GTBD AS Plan ASDC parameters MCL, VOLL System Outputs System Lambda Objective Function Build and solve optimization problem Resource Outputs LMPs Energy Awards AS MCPCs AS Awards Resource Data Status Resource Type Capacity and Ramping Limits AS Capability and Qualification Energy and AS Offers Transmission Outputs Constraint loading Constraint shadow price Transmission Constraints (Details on next slide) Shift Factors 3 3 Public
Optimization Details Last Update Decision Variables Base points AS awards ASDC variables Transmission slack variables Power balance slack variables Binary variables Carrying NFRC ESR Charge/Discharge Constraints Power balance Total AS award MW = Cleared ASDC MW Generator limits Capacity Limits (LSL, HSL) Ramp Limits (LDL, HDL) Max AS award (based on qualification, status, ramp capability, overrides) Linked AS Offers Transmission Constraints System-wide RRS procurement Regulation Ramping Constraint NFRC Conditional Constraint SOC Conditional Constraints Objective Minimize total system cost: Energy award costs AS award costs minus ASDC benefit Transmission and overgen/undergen penalties Implemented In progress 4 4 Public
Optimization Details Today Decision Variables Base points AS awards ASDC variables Transmission slack variables Power balance slack variables Binary variables Carrying NFRC Not binary after all ESR Charge/Discharge Constraints Power balance Total AS award MW = Cleared ASDC MW Generator limits Capacity Limits (LSL, HSL) Ramp Limits (LDL, HDL) Max AS award (based on qualification, status, ramp capability, overrides) Linked AS Offers Transmission Constraints System-wide RRS procurement Regulation Ramping Constraint NFRC Conditional Constraint SOC Conditional Constraints Objective Minimize total system cost: Energy award costs AS award costs minus ASDC benefit Transmission and overgen/undergen penalties Implemented In progress Postponed 5 5 Public
Capabilities and Limitations Current Functionality - Replicate results of Excel Tool - Solve production-scale cases derived from historical SCED data - Perform non-sequential multi-interval simulation In-Progress Functionality - Pricing run - Sequential multi-interval simulation - Improved output visualization (compare pre-RTC to RTC outcomes) Future Functionality - ESR single model - Mitigation Limitations - Market submission assumptions - Internal tool (ERCOT database access required) 6 6 Public
Summary and Next Steps Refocus on obtaining historical study results, comparing to pre-RTC outcomes. Each remaining task on the path to historical study results is in progress. The team is on track for study results in September, barring unforeseen issues. Questions? 7 7 Public
