NOGRR #109 · Revision Request
NOGRR109 Revisions to Definition of Credible Single Contingency for Operations Planning
ReasonThe original intent of this NOGRR was to respond to the 2/14/13 ROS directive to the Operations Working Group (OWG) and based on the recommendation of the Operations and Planning Synchronization Task Force (OPSTF) regarding Issue 6 of the OPSTF Issues List Matrix, which relates to the "[u]se of double circuit contingencies to develop operating limits." The OPSTF recommendation is as follows: "OPSTF discussed a proposal that a DCKT outage be considered only if it caused a reliability problem. The 'push-back' was that it is hard for the market to model contingencies that are sometimes run and sometimes not. ERCOT commented that this would be complex, burdensome and require new tools for System Operations. OPSTF recommends that ROS direct OWG to modify the Operating Guides language (pg. 1-15) to better reflect the actual practice." After further review, the OWG has agreed to delete the definition of Credit Single Contingency from the Nodal Operating Guides. The definition will be incorporated in the Protocols as the use of the term is being introduced in Nodal Protocol Revision Request (NPRR) 540, Clarification of Credible Single Contingency.
Created2013-03-20
Sections Affected
1.4
Summary
This Nodal Operating Guide Revision Request (NOGRR) deletes the definition of Credible Single Contingency from the Operating Guides.
Action Log 8 milestones
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Mar 20
OWGRecommended for Approval→ OWG IA Review
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Apr 17
OWGRecommended for Approval→ ROS Consideration
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Jun 13
ROSRemanded→ OWG Consideration
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Jun 19
OWGRecommended for Approval→ ROS Consideration
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Jul 11
ROSDeferred/Tabled→ ROS Consideration
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Sep 12
ROSRecommended for Approval→ TAC Consideration
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Oct 3
TACDeferred/Tabled→ TAC for consideration
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Jan 28
TACApproved
Amendments
| Date | Body | Motion | Result |
|---|---|---|---|
| Mar 20 '13 | OWG | Consensus to recommend approval of NOGRR109 as revised by OWG | |
| Jun 19 '13 | OWG | To recommend approval of NOGRR109 as amended by the 6/14/13 CenterPoint Energy comments and as revised by OWG. |
Documents 11
| Name | Type | Posted | Classification |
|---|---|---|---|
| 109NOGRR-01 Revisions to Definition of Credible Single Contingen | doc | Mar 5 '13 | Revision Request |
| 109NOGRR-02 OWG Report 032013 | doc | Mar 25 '13 | Committee Report |
| 109NOGRR-03 Impact Analysis 040813 | doc | Apr 8 '13 | Staff Report |
| 109NOGRR-04 OWG Report 041713 | doc | Jun 17 '13 | Committee Report |
| 109NOGRR-05 ROS Report 061313 | doc | Jun 17 '13 | Committee Report |
| 109NOGRR-06 CenterPoint Energy Comments 061413 | doc | Jun 14 '13 | Revision Request Comments |
| 109NOGRR-07 OWG Report 061913 | doc | Jun 21 '13 | Committee Report |
| 109NOGRR-08 ROS Report 071113 | doc | Jul 15 '13 | Committee Report |
| 109NOGRR-09 ROS Report 091213 | doc | Sep 16 '13 | Committee Report |
| 109NOGRR-10 TAC Report 100313 | doc | Oct 4 '13 | Committee Report |
| 109NOGRR-11 TAC Report 012814 | doc | Jan 30 '14 | Committee Report |
Meetings That Took It Up 11
| Date | Meeting | Committee | Status |
|---|---|---|---|
| Jan 28 '14 | TAC Meeting | TAC | Concluded |
| Oct 3 '13 | Technical Advisory Committee (TAC) Meeting | TAC | Concluded |
| Sep 12 '13 | Reliability and Operations Subcommittee (ROS) Meeting | ROS | Concluded |
| Sep 6 '13 | Workshop - Constraint Management Plan Revision Requests | Concluded | |
| Sep 3 '13 | Workshop - Constraint Management Plan Revision Requests | Concluded | |
| Aug 15 '13 | Reliability and Operations Subcommittee (ROS) Meeting | ROS | Concluded |
| Jul 11 '13 | Reliability and Operations Subcommittee (ROS) Meeting | ROS | Concluded |
| Jun 19 '13 | Operations Working Group (OWG) Meetings | OWG | Concluded |
| Jun 13 '13 | Reliability and Operations Subcommittee (ROS) Meeting | ROS | Concluded |
| Apr 17 '13 | Operations Working Group (OWG) Meetings | OWG | Concluded |
| Mar 20 '13 | Operations Working Group (OWG) Meeting | OWG | Concluded |