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NPRR496
Summary
| Title | Revise West Hub Definition Due to Permanent Topology Change |
|---|---|
| Next Group | |
| Next Step | |
| Status | Approved on 03/19/2013 |
| Effective Dates |
04/02/2013
|
Action
| Date | Gov Body | Action Taken | Next steps |
|---|---|---|---|
| 03/19/2013 | BOARD | Approved | |
| 01/03/2013 | TAC | Recommended for Approval | ERCOT Board Consideration |
| 12/13/2012 | PRS | Recommended for Approval | TAC Consideration |
| 11/15/2012 | PRS | Recommended for Approval | PRS IA Review |
Voting Record
| Date | Gov Body | Motion | Result |
|---|---|---|---|
| 03/19/2013 | BOARD | To approve NPRR496 as recommended by TAC in the 1/3/13 TAC Report | Passed |
| 01/03/2013 | TAC | To recommend approval of NPRR496 as recommended by PRS in the 12/13/12 PRS Report | Passed |
| 12/13/2012 | PRS | To endorse and forward the 11/15/12 PRS Report and Impact Analysis for NPRR496 to TAC | Passed |
| 11/15/2012 | PRS | To recommend approval of NPRR496 as submitted | Passed |
Background
| Status: | Approved |
|---|---|
| Date Posted: | Oct 31, 2012 |
| Sponsor: | ERCOT |
| Urgent: | No |
| Sections: | 3.5.2.1 |
| Description: | This Nodal Protocol Revision Request (NPRR) revises the West 345 kV Hub to replace the Sweetwater Cogen (SWCOG) Hub Bus with Sweetwater East Switch (SWESW) Hub Bus. |
| Reason: | The Transmission Service Provider (TSP) for the SWCOG station notified ERCOT that it needs to remove this Hub Bus from the Updated Network Model as it is no longer in the network. Until such time as this Hub Bus is removed from the Hub Bus definitions, it has been changed to be a "pseudo" bus that is connected radially to the SWESW station, since there are no longer any devices at the SWCOG station. In accordance with paragraph (4) of Section 3.5.1, Process for Defining Hubs, shown below for reference, ERCOT proposes to revise the West 345 kV Hub definition to remove the SWCOG Hub Bus. "In the event of a permanent change that removes the Hub Bus from the ERCOT Transmission Grid, ERCOT shall file a Nodal Protocol Revision Request (NPRR) to revise the appropriate Hub definition" Since SWCOG is/was radially connected to SWESW, it is an appropriate substitution for the removed Hub Bus. Therefore, ERCOT proposes to add a Hub Bus at SWESW as part of this Hub definition revision. |
Key Documents
Oct 31, 2012 - doc - 96 KB
Oct 31, 2012 - doc - 54.5 KB
Nov 20, 2012 - doc - 101.5 KB
Dec 18, 2012 - doc - 102.5 KB
Jan 4, 2013 - doc - 106 KB
Mar 22, 2013 - doc - 106 KB