NOGRR #44 · Revision Request
NOGRR044 Clarification of a PSS In-Service and Improved Communication Process for Changes in PSS Status (formerly "Clarification of a PSS In-Service")
ReasonIt is currently perceived that a PSS is deemed to be in service when a generator is On-Line and synchronized to the ERCOT Transmission Grid. However, that may not always be the case. For example, a PSS can be turned on or off via a control switch. Furthermore, if the PSS is turned on, it does not become active or responsive until the MW level surpasses the unit stability limit as it increases in MWs from zero MWs after synchronization to the ERCOT Transmission Grid. In the decreasing MW mode it will de-activate when it surpasses the defined Low Sustained Limit (LSL) while synchronized to the ERCOT Transmission Grid. The proposed revisions mitigate these concerns.
Created2010-07-21
Sections Affected
2.2.52.2.6
Summary
This Nodal Operating Guide Revision Request (NOGRR) clarifies that a Power System Stabilizer (PSS) must be "On" and in an active MW range to be considered in service. This NOGRR also proposes language changes to improve the communication process for any change in PSS status.
Action Log 7 milestones
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Jul 21
OWGRecommended for Approval→ OWG IA Review
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Aug 18
OWGDeferred/Tabled→ OWG Review
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Sep 23
OWGDeferred/Tabled→ OWG Consideration
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Oct 20
OWGDeferred/Tabled→ OWG Consideration
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Dec 15
OWGRecommended for Approval→ ROS Consideration
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Jan 13
ROSRecommended for Approval→ TAC Consideration
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Feb 3
TACApproved
Amendments
| Date | Body | Motion | Result |
|---|---|---|---|
| Jul 21 '10 | OWG | Consensus to recommend approval of NOGRR044 as amended by the 7/19/10 ERCOT comments and as revised by OWG | |
| Dec 15 '10 | OWG | Consensus to endorse and forward the 7/21/10 OWG Recommendation Report as revised by OWG and the Impact Analysis for NOGRR044 to ROS | |
| Jan 13 '11 | ROS | To recommend approval of NOGRR044 as amended by the 1/11/11 Austin Energy comments | |
| Feb 3 '11 | TAC | To approve NOGRR044 as amended by the 2/1/11 Luminant comments and as revised by TAC | Passed |
Documents 17
| Name | Type | Posted | Classification |
|---|---|---|---|
| 044NOGRR-01 Clarification of PSS In-Service 060310 | doc | Jun 3 '10 | Revision Request |
| 044NOGRR-02 CEO Revision Request Review 060310 | doc | Jun 3 '10 | Committee Report |
| 044NOGRR-03 ERCOT Comments 071910 | doc | Jul 19 '10 | Revision Request Comments |
| 044NOGRR-04 OWG Recommendation Report 072110 | doc | Jul 26 '10 | Committee Report |
| 044NOGRR-05 Impact Analysis 080210 | doc | Aug 2 '10 | Staff Report |
| 044NOGRR-06 OWG Report 081810 | doc | Aug 20 '10 | Committee Report |
| 044NOGRR-07 OWG Report 092310 | doc | Sep 27 '10 | Committee Report |
| 044NOGRR-08 OWG Report 102010 | doc | Oct 25 '10 | Committee Report |
| 044NOGRR-09 OWG Report 121510 | doc | Dec 20 '10 | Committee Report |
| 044NOGRR-10 ERCOT Comments 011011 | doc | Jan 10 '11 | Revision Request Comments |
| 044NOGRR-11 Austin Energy Comments 011111 | doc | Jan 11 '11 | Revision Request Comments |
| 044NOGRR-12 Luminant Comments 011211 | doc | Jan 12 '11 | Revision Request Comments |
| 044NOGRR-13 ROS Report 011311 | doc | Jan 17 '11 | Committee Report |
| 044NOGRR-14 ERCOT Comments 011911 | doc | Jan 19 '11 | Revision Request Comments |
| 044NOGRR-15 STEC Comments 012511 | doc | Jan 25 '11 | Revision Request Comments |
| 044NOGRR-16 Luminant Comments 020111 | doc | Feb 1 '11 | Revision Request Comments |
| 044NOGRR-17 TAC Report 020311 | doc | Feb 7 '11 | Committee Report |
Meetings That Took It Up 9
| Date | Meeting | Committee | Status |
|---|---|---|---|
| Feb 3 '11 | TAC Meeting | TAC | Concluded |
| Jan 19 '11 | OWG Meeting | OWG | Concluded |
| Jan 13 '11 | ROS Meeting | ROS | Concluded |
| Dec 15 '10 | OWG Meeting | OWG | Concluded |
| Nov 18 '10 | OWG Meeting | OWG | Concluded |
| Oct 20 '10 | OWG Meeting | OWG | Concluded |
| Sep 23 '10 | OWG Meeting | OWG | Concluded |
| Aug 18 '10 | OWG Meeting | OWG | Concluded |
| Jul 21 '10 | OWG Meeting | OWG | Concluded |