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NOGRR044
Summary
| Title | Clarification of a PSS In-Service and Improved Communication Process for Changes in PSS Status (formerly "Clarification of a PSS In-Service") |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 02/03/2011 |
| Effective Dates |
03/01/2011
|
Action
| Date | Gov Body | Action Taken | Next Steps |
|---|---|---|---|
| 02/03/2011 | TAC | Approved | |
| 01/13/2011 | ROS | Recommended for Approval | TAC Consideration |
| 12/15/2010 | OWG | Recommended for Approval | ROS Consideration |
| 10/20/2010 | OWG | Deferred/Tabled | OWG Consideration |
| 09/23/2010 | OWG | Deferred/Tabled | OWG Consideration |
| 08/18/2010 | OWG | Deferred/Tabled | OWG Review |
| 07/21/2010 | OWG | Recommended for Approval | OWG IA Review |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 02/03/2011 | TAC | To approve NOGRR044 as amended by the 2/1/11 Luminant comments and as revised by TAC | Passed |
| 01/13/2011 | ROS | To recommend approval of NOGRR044 as amended by the 1/11/11 Austin Energy comments | |
| 12/15/2010 | 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 | |
| 10/20/2010 | OWG | Consensus to table NOGRR044 for one month | |
| 09/23/2010 | OWG | Consensus to table NOGRR044 for one month | |
| 08/18/2010 | OWG | Consensus to table NOGRR044 for one month | |
| 07/21/2010 | OWG | Consensus to recommend approval of NOGRR044 as amended by the 7/19/10 ERCOT comments and as revised by OWG |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Jun 3, 2010 |
| Sponsor: | LCRA |
| Urgent: | No |
| Sections: | 2.2.5, 2.2.6 |
| Description: | 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. |
| Reason: | It 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. |
Key Documents
Jun 3, 2010 - doc - 82.5 KB
Jun 3, 2010 - doc - 65.5 KB
Jul 19, 2010 - doc - 54 KB
Jul 26, 2010 - doc - 87 KB
Aug 2, 2010 - doc - 46.5 KB
Aug 20, 2010 - doc - 87.5 KB
Sep 27, 2010 - doc - 87.5 KB
Oct 25, 2010 - doc - 88.5 KB
Dec 20, 2010 - doc - 91 KB
Jan 10, 2011 - doc - 65.5 KB
Jan 11, 2011 - doc - 65.5 KB
Jan 12, 2011 - doc - 62.5 KB
Jan 17, 2011 - doc - 99.5 KB
Jan 19, 2011 - doc - 61.5 KB
Jan 25, 2011 - doc - 61.5 KB
Feb 1, 2011 - doc - 64.5 KB
Feb 7, 2011 - doc - 106.5 KB