ERCOT Updates May 2022: Important Information on DGR/DESR Resource Node Management
Stay informed with the latest updates from ERCOT regarding DGR/DESR resource node management post-conversion, including details on station impedance, relocation flexibility, and protocol compliance. Learn about the criteria for moving resource nodes and how it impacts electrically similar nodes in the network.
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Presentation Transcript
May 2022 NDSWG - ERCOT Updates April 22, 2025
Contents Model correction for mismatched voltage associations (verbal) LFLTF Resource Node management for DESR and DGRs ICR usage for contingency DPCs PUBLIC
Large Flexible Loads - Update Large Flexible Load Task Force created: https://www.ercot.com/committees/tac/lfltf Next meeting on 5/18 (tomorrow) New email address for LFL process: LargeLoadInterconnection@ercot.com Interim thresholds described in Market Notice (W-A032522-01) TSP stations: >75MW demand increase over 2 years Co-located generation sites: >20MW demand increase over 2 years 3 PUBLIC
Resource Node Movement for DGR/DESR PUBLIC
DGR/DESR Resource Node Management Post-Conversion If a DGR/DESR is modeled in the new-style protocols provide some flexibility to relocate Resource Nodes of DGRs and DESRs Station A Station B Impedance RN 1 2 3 EPS 5 PUBLIC
DGR/DESR Resource Node Management Post-Conversion Station A Station B Impedance RN 1 2 3 EPS Station A Station B Impedance RN 1 3 2 EPS Resource Nodes of DGR/DESRs can move to a new location if they are electrically the same 6 PUBLIC
DGR/DESR Resource Node Management Post-Conversion Station A Station B Impedance RN 1 2 3 EPS Station A Station B <0.0005 X Impedance RN 1 2 3 EPS Resource Nodes of DGR/DESRs can move to a new location if they are electrically the same or the impedance is less that the 0.0005 pu reactance threshold 7 PUBLIC
DGR/DESR Resource Node Management Post-Conversion Station A Station B Impedance RN Resource Nodes of DGR/DESRs cannot be moved across impedances greater that 0.0005 reactance. 1 2 3 EPS Station A Station B >0.0005 X Impedance RN RN 1 2 3 EPS Retired The old Resource Node must stay in the model until all CRR activities have concluded (Up to 3 years) 8 PUBLIC
Contingency Management Informational Change Requests 9 PUBLIC
ICR Informational Change Request Informational Change Requests (ICRs) are submissions to ERCOT that will not have an associated modeling change. Example: Ratings Methodology Submissions ERCOT requests ICRs be submitted when a valid change request cannot be accommodated due to modeling nuances Example: Disabling an auto-traced contingency via DPC on the first model load 10 PUBLIC
Submission of Auto-Traced Contingencies Submitted >14 days ago Submitted ~14 days ago Standard Change Requests Auto-traced contingencies are added at the end of the model week Auto-Traced Contingency Change Request CRs are submitted throughout the first day of the model week 5/18 5/19 5/20 5/21 5/22 5/23 5/24 May ML3 May ML3 Model The model provided downstream represents the end of the model week Created ~14 days ago EMS/MMS 11 PUBLIC
Submission of Auto-Traced Contingencies Submitted >14 days ago Submitted ~14 days ago Standard Change Requests Submitted today Auto-Traced Contingency Change Request Contingency DPC Submission 5/18 5/19 5/20 5/21 5/22 5/23 5/24 May ML3 May ML3 Model Created ~14 days ago Contingency is not present in the model at this time. ICR requested since CAMR would not have any changes EMS/MMS 12 PUBLIC
