NPRR #1044 · Revision Request

NPRR1044 Enhancement of SSR Mitigation Requirement

Approved sponsor ERCOT posted 2020-09-01 ercot.com

ReasonAddresses current operational issues, Market efficiencies or enhancements

Created2020-10-15

Approved2021-02-09

Sections Affected

3.22.1.2

Summary

This Nodal Protocol Revision Request (NPRR) requires Generation Resources and Energy Storage Resources (ESRs) to develop and implement Subsynchronous Resonance (SSR) Mitigation plans to address SSR vulnerabilities in the event of six or fewer concurrent transmission outages, instead of the current threshold of four or fewer outages. Generation Resources and ESRs that satisfied Planning Guide Section 6.9, Addition of Proposed Generation to the Planning Models, before September 1, 2020 would be allowed to elect SSR monitoring to address SSR vulnerabilities in the event of five or six concurrent transmission outages.

Timeline

Sep 1 '20
PRSFiled by ERCOT
- 1044NPRR-01 Enhancement of SSR Mitigation Requirement 090120 Sep 1 '20 · Revision Request
- 1044NPRR-02 Impact Analysis 090120 Sep 1 '20 · Staff Report
Oct 15 '20
PRS PRS Meeting by Webex Only
PRSDeferred/Tabled Tabled Referred → ROS
“to table NPRR1044 and refer the issue to ROS” — Passed

→ Language Consideration

Motion Carries 7–0 roll call
Nov 5 '20
ROS ROS Meeting by Webex Only
Motion Carries 7.5–0 roll call

“To request PRS continue to table NPRR1044 to allow for review by PLWG and DWG”
- 1044NPRR-03 PRS Ballot 101520 Oct 20 '20 · Revision Request Ballot
- 1044NPRR-04 PRS Report 101520 Oct 20 '20 · Committee Report
Nov 9 '20
PLWG PLWG Meeting by Webex Only
- 1044NPRR-05 ROS Ballot 110520 Nov 6 '20 · Revision Request Ballot
- 1044NPRR-06 ROS Comments 110620 Nov 6 '20 · Revision Request Comments
Nov 11 '20
Listed without action at 1 meeting
- PRS Meeting by Webex Only Nov 11 '20
Dec 3 '20
ROS ROS Meeting by Webex Only
Motion Carries 7.5–0 roll call

“to endorse NPRR1044 as amended by the 11/23/20 ERCOT comments”
- 1044NPRR-07 ERCOT Comments 112320 Nov 23 '20 · Revision Request Comments
Dec 10 '20
PRS PRS Meeting by Webex Only
PRSRecommended for Approval Recommended for approval Amended by the Nov 23 '20 ERCOT comments
“to recommend approval of NPRR1044 as amended by the 11/23/20 ERCOT comments” — Passed

→ Impact Analysis Consideration

Ballot 27–0 roll call
- 1044NPRR-08 ROS Ballot 120320 Dec 4 '20 · Revision Request Ballot
- 1044NPRR-09 ROS Comments 120420 Dec 4 '20 · Revision Request Comments
Jan 14 '21
PRS PRS Meeting by Webex Only
PRSRecommended for Approval Recommended for approval Forwarded → TAC
“to endorse and forward to TAC the 12/10/20 PRS Report and the Impact Analysis for NPRR1044” — Passed

→ Revision Request Consideration

Motion Carries 7–0 (1 abstain) roll call
- 1044NPRR-10 PRS Ballot 121020 Dec 15 '20 · Revision Request Ballot
- 1044NPRR-11 PRS Report 121020 Dec 15 '20 · Committee Report
Jan 27 '21
TAC TAC Meeting by Webex Only
TACRecommended for Approval Recommended for approval
“to recommend approval of NPRR1044 as recommended by PRS in the 1/14/21 PRS Report” — Passed

→ Revision Request Consideration

Motion Passes 30–0 roll call
- 1044NPRR-12 PRS Ballot 011421 Jan 20 '21 · Revision Request Ballot
- 1044NPRR-13 PRS Report 011421 Jan 20 '21 · Committee Report
Feb 9 '21
BOARD Urgent Board of Directors Meeting – Teleconference Available by Webcast
BOARDApproved Recommended for approval
“to approve NPRR1044 as recommended by TAC in the 1/27/21 TAC Report” — Passed
- 1044NPRR-14 TAC Ballot 012721 Jan 29 '21 · Revision Request Ballot
- 1044NPRR-15 TAC Report 012721 Jan 29 '21 · Committee Report
—
Posted since the last meeting
- 1044NPRR-16 Board Report 020921 Feb 12 '21 · Committee Report