NPRR #425 · Revision Request
NPRR425 Creation of a WGR Group for GREDP and Base Point Deviation Evaluation and Mixing Turbine Types Within a WGR (formerly "Creation of a WGR Group for GREDP and Base Point Deviation Evaluation")
ReasonIn Protocol Revision Request (PRR) 830, Reactive Power Capability Requirement, ERCOT modified the definition of a "Wind-powered Generation Resource" in order to obtain a more accurate representation of the reactive capabilities of the aggregated turbines of the same model and size for reactive modeling purposes. However, for Dispatch purposes, many Qualified Scheduling Entities (QSEs) / Resource Entities representing WGRs are not able to independently Dispatch those WGRs due to control limitations. Therefore, ERCOT believes an acceptable solution to this problem is to create a WGR Group for Dispatch purposes while still maintaining the WGR definition for reactive modeling purposes. The creation of the WGR Group also addresses the Base Point Deviation treatment for these WGRs under their current operational capabilities. By allowing multiple wind turbine models or sizes to be combined in a single WGR, Market Participants may avoid the burden of having to register and operate additional WGRs due to the replacement of wind turbines if the replacement turbines have similar, if not exact characteristics, or due to the installation of a de minimis number of turbines that may have different characteristics from the majority of turbines in the WGR for the purpose of testing new technologies, so long as it does not reduce ERCOT’s ability to model pre- and post-contingency conditions on the ERCOT Transmission Grid.
Created2011-11-17
Approved2012-11-13
Sections Affected
2.13.10.7.26.6.5.28.1.1.4.1
Summary
This Nodal Protocol Revision Request (NPRR) provides that Wind-powered Generation Resources (WGRs) meeting registration requirements will be evaluated for Generation Resource Energy Deployment Performance (GREDP) and Base Point Deviation as groups of WGRs rather than individual WGRs. This NPRR also permits multiple wind turbine models or sizes to be combined in a single WGR if certain criteria are met.
Action Log 9 milestones
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Nov 17
PRSDeferred/Tabled→ PRS language consideration
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Feb 23
PRSRecommended for Approval→ PRS Impact Analysis review
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Mar 22
PRSDeferred/Tabled→ PRS Impact Analysis review
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Apr 19
PRSDeferred/Tabled→ PRS Impact Analysis review
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Jun 21
PRSRecommended for Approval→ PRS Impact Analysis review
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Jul 19
PRSRecommended for Approval→ TAC consideration of NPRR425
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Sep 7
TACDeferred/Tabled→ TAC consideration of NPRR425
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Oct 4
TACRecommended for Approval→ ERCOT Board consideration
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Nov 13
BOARDApproved
Amendments
| Date | Body | Motion | Result |
|---|---|---|---|
| Feb 23 '12 | PRS | To recommend approval of NPRR425 as amended by the 2/17/12 E.ON comments. | Passed |
| Jun 21 '12 | PRS | To endorse the 2/23/12 PRS Report as amended by the 6/11/12 ERCOT comments and to direct that NPRR425 and a revised Impact Analysis return to the July 2012 PRS meeting. | Passed |
| Oct 4 '12 | TAC | To recommend approval of NPRR425 as recommended by PRS in the 7/19/12 PRS Report and as amended by the 9/26/12 ERCOT comments and 9/27/12 Wind Coalition comments. |
Documents 27
| Name | Type | Posted | Classification |
|---|---|---|---|
| 425NPRR-01 Creation of a WGR Group for GREDP and Base Point Devi | doc | Nov 2 '11 | Revision Request |
| 425NPRR-02 Impact Analysis 110211 | doc | Nov 2 '11 | Staff Report |
| 425NPRR-03 WMS Comments 110911 | doc | Nov 9 '11 | Revision Request Comments |
| 425NPRR-04 PRS Report 111711 | doc | Feb 24 '12 | Committee Report |
| 425NPRR-05 WMS Comments 120911 | doc | Dec 9 '11 | Revision Request Comments |
| 425NPRR-06 E.ON Comments 021512 | doc | Feb 15 '12 | Revision Request Comments |
| 425NPRR-07 E.ON Comments 021712 | doc | Feb 24 '12 | Revision Request Comments |
| 425NPRR-08 WMS Comments 021712 | doc | Feb 17 '12 | Revision Request Comments |
| 425NPRR-09 PRS Report 022312 | doc | Mar 1 '12 | Committee Report |
| 425NPRR-10 Revised Impact Analysis 032112 | doc | Mar 21 '12 | Staff Report |
| 425NPRR-11 ERCOT Comments 032112 | doc | Mar 21 '12 | Revision Request Comments |
| 425NPRR-12 PRS Report 032212 | doc | Mar 26 '12 | Committee Report |
| 425NPRR-13 ERCOT Comments 041012 | doc | Apr 10 '12 | Revision Request Comments |
| 425NPRR-14 WMS Comments 041612 | doc | Apr 16 '12 | Revision Request Comments |
| 425NPRR-15 ROS Comments 041612 | doc | Apr 16 '12 | Revision Request Comments |
| 425NPRR-16 Oncor Electric Delivery Comments 041612 | doc | Apr 16 '12 | Revision Request Comments |
| 425NPRR-17 PRS Report 041912 | doc | Apr 23 '12 | Committee Report |
| 425NPRR-18 ERCOT Comments 061112 | doc | Jun 11 '12 | Revision Request Comments |
| 425NPRR-19 ROS Comments 061812 | doc | Jun 18 '12 | Revision Request Comments |
| 425NPRR-20 PRS Report 062112 | doc | Jun 22 '12 | Committee Report |
| 425NPRR-21 PRS Report 071912 | doc | Jul 20 '12 | Committee Report |
| 425NPRR-22 Revised Impact Analysis 090612 | doc | Sep 6 '12 | Staff Report |
| 425NPRR-23 TAC Report 090712 | doc | Sep 10 '12 | Committee Report |
| 425NPRR-24 ERCOT Comments 092612 | doc | Sep 26 '12 | Revision Request Comments |
| 425NPRR-25 Wind Coalition Comments 092712 | doc | Sep 27 '12 | Revision Request Comments |
| 425NPRR-26 TAC Report 100412 | doc | Oct 4 '12 | Committee Report |
| 425NPRR-27 Board Report 111312 | doc | Nov 13 '12 | Committee Report |
Meetings That Took It Up 31