NOGRR #226 · Revision Request
NOGRR226 Addition of Supplemental UFLS Stages
ReasonAddresses current operational issues
Created2021-06-03
Approved2023-01-26
Sections Affected
2.6.1
Summary
This Nodal Operating Guide Revision Request (NOGRR) adds provisions for Transmission Operator (TO) “anti-stall” automatic firm Load shedding at 59.5 Hz in order to improve reliability by mitigating the risk of a total system-wide Blackout.
Action Log 7 milestones
-
Jun 3
ROSDeferred/Tabled→ Language Consideration
-
Sep 1
ROSRecommended for Approval→ Impact Analysis
-
Sep 29
ROSDeferred/Tabled→ Impact Analysis Consideration
-
Nov 7
ROSRecommended for Approval→ Revision Request Consideration
-
Dec 5
TACRecommended for Approval→ Revision Request Consideration
-
Dec 20
BOARDRecommended for Approval→ Revision Request Consideration
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Jan 26
PUCTApproved
Amendments
| Date | Body | Motion | Result |
|---|---|---|---|
| Sep 1 '22 | ROS | to recommend approval of NOGRR226 as amended by the 8/31/22 CenterPoint Energy comments as revised by ROS | Passed |
| Dec 5 '22 | TAC | to recommend approval of NOGRR226 as recommended by ROS in the 11/7/22 ROS Report as amended by the 11/30/22 ERCOT comments as revised by TAC; with a proposed effective date of January 20, 2023 | Passed |
Ballots
| Date | Body | Result | Yes | No | Abstain | |
|---|---|---|---|---|---|---|
| Dec 5 '22 | TAC | Motion Passes | 28 | 0 | 1 | xls |
| Nov 11 '22 | PRS | Motion Carries | 7 | 0 | 0 | xls |
| Nov 7 '22 | ROS | Motion Carries | 7.5 | 0 | 0 | xls |
| Sep 29 '22 | ROS | Motion Carries | 7.5 | 0 | 0 | xls |
| Sep 1 '22 | ROS | Motion Carries | 7.5 | 0 | 0 | xls |
| Jun 3 '21 | ROS | Motion Carries | 7.5 | 0 | 0 | xls |
Documents 22
| Name | Type | Posted | Classification |
|---|---|---|---|
| 226NOGRR-01 Revision to 5% Transmission Operator (TO) Load Shedding Relay Set Point 051421 | doc | May 14 '21 | Revision Request |
| 226NOGRR-02 ROS Ballot 060321 | xls | Jun 8 '21 | Revision Request Ballot |
| 226NOGRR-03 ROS Report 060321 | doc | Jun 8 '21 | Committee Report |
| 226NOGRR-04 LCRA Comments 080221 | doc | Aug 2 '21 | Revision Request Comments |
| 226NOGRR-05 Oncor Comments 021622 | doc | Feb 16 '22 | Revision Request Comments |
| 226NOGRR-06 Joint TOs Comments 081722 | doc | Aug 17 '22 | Revision Request Comments |
| 226NOGRR-07 CenterPoint Energy Comments 083122 | doc | Aug 31 '22 | Revision Request Comments |
| 226NOGRR-08 ROS Ballot 090122 | xls | Sep 14 '22 | Revision Request Ballot |
| 226NOGRR-09 ROS Report 090122 | doc | Sep 14 '22 | Committee Report |
| 226NOGRR-10 ERCOT Comments 092222 | doc | Sep 22 '22 | Revision Request Comments |
| 226NOGRR-11 ROS Ballot 092922 | xls | Oct 4 '22 | Revision Request Ballot |
| 226NOGRR-12 ROS Report 092922 | doc | Oct 4 '22 | Committee Report |
| 226NOGRR-13 Impact Analysis 110122 | doc | Nov 1 '22 | Staff Report |
| 226NOGRR-14 ROS Ballot 110722 | xls | Nov 10 '22 | Revision Request Ballot |
| 226NOGRR-15 ROS Report 110722 | doc | Nov 10 '22 | Committee Report |
| 226NOGRR-16 PRS Ballot 111122 | xls | Nov 16 '22 | Revision Request Ballot |
| 226NOGRR-17 PRS Comments 111622 | doc | Nov 16 '22 | Revision Request Comments |
| 226NOGRR-18 ERCOT Comments 113022 | doc | Nov 30 '22 | Revision Request Comments |
| 226NOGRR-19 TAC Ballot 120522 | xls | Dec 7 '22 | Revision Request Ballot |
| 226NOGRR-20 TAC Report 120522 | doc | Dec 7 '22 | Committee Report |
| 226NOGRR-21 Board Report 122022 | doc | Dec 20 '22 | Committee Report |
| 226NOGRR-22 PUCT Report 012623 | doc | Jan 27 '23 | Committee Report |
Meetings That Took It Up 39
| Date | Meeting | Committee | Status |
|---|---|---|---|
| Dec 20 '22 | Board of Directors Meeting | BOARD | Concluded |
| Dec 5 '22 | TAC Meeting | TAC | Concluded |
| Nov 11 '22 | PRS Meeting by Webex Only | PRS | Concluded |
| Nov 7 '22 | ROS Meeting by Webex Only | ROS | Concluded |
| Sep 29 '22 | ROS Meeting by Webex Only | ROS | Concluded |
| Sep 14 '22 | PDCWG Meeting by Webex Only | PDCWG | Concluded |
| Sep 1 '22 | ROS Meeting | ROS | Concluded |
| Aug 18 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Aug 10 '22 | ROS Meeting | ROS | Concluded |
| Jul 21 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Jul 20 '22 | PDCWG Meeting | PDCWG | Concluded |
| Jun 23 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Jun 2 '22 | ROS Meeting | ROS | Concluded |
| May 19 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| May 5 '22 | ROS Meeting | ROS | Concluded |
| Apr 21 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Apr 7 '22 | ROS Meeting | ROS | Concluded |
| Mar 24 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Mar 3 '22 | ROS Meeting by Webex Only | ROS | Concluded |
| Feb 17 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Feb 7 '22 | ROS Meeting by Webex Only | ROS | Concluded |
| Jan 20 '22 | OWG Meeting by Webex Only | OWG | Concluded |
| Jan 6 '22 | ROS Meeting by Webex Only | ROS | Concluded |
| Dec 16 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Dec 2 '21 | ROS Meeting by Webex Only | ROS | Concluded |
| Nov 18 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Nov 12 '21 | PDCWG Meeting by Webex Only | PDCWG | Concluded |
| Nov 4 '21 | ROS Meeting by Webex Only | ROS | Concluded |
| Oct 21 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Oct 7 '21 | ROS Meeting by Webex Only | ROS | Concluded |
| Sep 14 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Sep 2 '21 | ROS Meeting by Webex Only | ROS | Concluded |
| Aug 19 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Aug 5 '21 | ROS Meeting by Webex Only | ROS | Concluded |
| Jul 13 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Jul 8 '21 | ROS Meeting by Webex Only | ROS | Concluded |
| Jun 17 '21 | OWG Meeting by Webex Only | OWG | Concluded |
| Jun 16 '21 | PDCWG Meeting by Webex Only | PDCWG | Concluded |
| Jun 3 '21 | ROS Meeting by Webex Only | ROS | Concluded |