SCR #831 · Revision Request

SCR831 Short Circuit Model Integration

Approved sponsor ERCOT posted 2025-01-15 ercot.com

ReasonStrategic Plan Objective 2

Created2025-02-12

Approved2026-01-15

Summary

This System Change Request (SCR) modifies the Network Model Management System (NMMS), ODMS, Topology Processor, and Modeling on Demand system to incorporate short circuit modeling data for maintaining short circuit models built by the System Protection Working Group (SPWG).

Timeline

Jan 15 '25
PRSFiled by ERCOT
- 831SCR-01 Short Circuit Model Integration 011525 Jan 15 '25 · Revision Request
Feb 12 '25
PRS PRS Meeting
PRSDeferred/Tabled Tabled Referred → ROS
“to table SCR831 and refer the issue to ROS” — Passed

→ Language Consideration

Motion Carries 7–0 roll call
Feb 24 '25
Listed without action at 1 meeting
- SPWG Meeting - Webex Only Feb 24 '25
Mar 6 '25
ROS ROS Meeting
Motion Carries 7.5–0 roll call

“To request PRS continue to table SCR831 for further review by SPWG, SSWG and NDSWG”
- 831SCR-03 PRS Ballot 021225 Mar 5 '25 · Revision Request Ballot
- 831SCR-04 PRS Report 021225 Mar 5 '25 · Committee Report
Mar 12 '25
PRS PRS Meeting
- 831SCR-05 ROS Ballot 030625 Mar 10 '25 · Revision Request Ballot
- 831SCR-06 ROS Comments 030625 Mar 10 '25 · Revision Request Comments
Apr 3 '25
Listed without action at 11 meetings (Apr 3 '25 – Jul 16 '25)
- ROS Meeting - Webex Only Apr 3 '25
- PRS Meeting Apr 9 '25
- ROS Meeting May 1 '25
- PRS Meeting May 14 '25
- ROS Meeting - Webex Only Jun 5 '25
- PRS Meeting Jun 11 '25
- NDSWG Meeting - Webex Only Jun 17 '25
- ROS Meeting - Webex Only Jul 10 '25
- NDSWG Meeting - Webex Only Jul 15 '25
- PRS Meeting Jul 16 '25
- SPWG Meeting Jul 16 '25
Aug 7 '25
ROS ROS Meeting
Motion Carries 7.5–0 roll call

“To recommend approval of SCR831 as submitted”
- 831SCR-07 Joint TSP Comments 073025 Jul 30 '25 · Revision Request Comments
Aug 13 '25
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval
“recommend approval of SCR831 as submitted” — Passed

→ Impact Analysis Consideration

Motion Carries 7–0 roll call
- 831SCR-08 ROS Ballot 080725 Aug 8 '25 · Revision Request Ballot
- 831SCR-09 ROS Comments 080825 Aug 8 '25 · Revision Request Comments
- 831SCR-02 Impact Analysis 011525 Aug 12 '25 · Staff Report
Sep 17 '25
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval Forwarded → TAC priority 2026 · rank 4810
“to endorse and forward to TAC the 8/13/25 PRS Report and 1/15/25 Impact Analysis for SCR831 with a recommended priority of 2026 and rank of 4810” — Passed

→ Revision Request Consideration

Motion Carries 7–0 roll call
- 831SCR-10 PRS Ballot 081325 Aug 18 '25 · Revision Request Ballot
- 831SCR-11 PRS Report 081325 Aug 18 '25 · Committee Report
Oct 22 '25
TAC TAC Meeting
TACRecommended for Approval Recommended for approval
“to recommend approval of SCR831 as recommended by PRS in the 9/17/25 PRS Report” — Passed

→ Revision Request Consideration

Motion Passes 27–0 roll call
- 831SCR-12 PRS Ballot 091725 Sep 22 '25 · Revision Request Ballot
- 831SCR-13 PRS Report 091725 Sep 22 '25 · Committee Report
Dec 8 '25
BOARD Board of Directors Meeting
BOARDRecommended for Approval Recommended for approval
“to recommend approval of SCR831 as recommended by TAC in the 10/22/25 TAC Report” — Passed

→ Revision Request Consideration
- 831SCR-14 TAC Ballot 102225 Oct 26 '25 · Revision Request Ballot
- 831SCR-15 TAC Report 102225 Oct 26 '25 · Committee Report
Jan 15 '26
PUCT
PUCTApproved Approved
“to approve SCR831 and accompanying ERCOT Market Impact Statement as presented in Project No. 54445, Review of Protocols Adopted by the Independent Organization” — Passed
- 831SCR-16 Board Report 120825 Dec 10 '25 · Committee Report
—
Posted since the last meeting
- 831SCR-17 PUCT Report 011526 Jan 21 '26 · Committee Report