NPRR #496 · Revision Request
NPRR496 Revise West Hub Definition Due to Permanent Topology Change
ReasonThe 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.
Created2012-11-15
Approved2013-03-19
Sections Affected
3.5.2.1
Summary
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.
Action Log 4 milestones
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Nov 15
PRSRecommended for Approval→ PRS IA Review
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Dec 13
PRSRecommended for Approval→ TAC Consideration
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Jan 3
TACRecommended for Approval→ ERCOT Board Consideration
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Mar 19
BOARDApproved
Documents 6
| Name | Type | Posted | Classification |
|---|---|---|---|
| 496NPRR-01 Revise West Hub Definition Due to Permanent Topology | doc | Oct 31 '12 | Revision Request |
| 496NPRR-02 Impact Analysis 103112 | doc | Oct 31 '12 | Staff Report |
| 496NPRR-03 PRS Report 111512 | doc | Nov 20 '12 | Committee Report |
| 496NPRR-04 PRS Report 121312 | doc | Dec 18 '12 | Committee Report |
| 496NPRR-05 TAC Report 010313 | doc | Jan 4 '13 | Committee Report |
| 496NPRR-06 Board Report 031913 | doc | Mar 22 '13 | Committee Report |
Meetings That Took It Up 4
| Date | Meeting | Committee | Status |
|---|---|---|---|
| Mar 19 '13 | Board of Directors Meeting | BOARD | Concluded |
| Jan 3 '13 | Technical Advisory Committee (TAC) Meeting | TAC | Concluded |
| Dec 13 '12 | Protocol Revision Subcommittee (PRS) Meeting | PRS | Concluded |
| Nov 15 '12 | Protocol Revision Subcommittee (PRS) Meeting | PRS | Concluded |