Title: Required Combined Cycle Telemetry for Operational Awareness and PDCWG Analysis
Next Group:
Next Step:
Status: Approved on 11/19/2013
Effective Dates:

All sections except for Section




Date Gov Body Action Taken Next Steps
11/19/2013 BOARD Approved
09/05/2013 TAC Recommended for Approval ERCOT Board Consideration
08/22/2013 PRS Recommended for Approval TAC Consideration
07/18/2013 PRS Recommended for Approval PRS IA Review
03/21/2013 PRS Deferred/Tabled PRS Language Consideration

Voting Record

Date Gov Body Motion Result
11/19/2013 BOARD To approve NPRR527 as recommended by TAC in the 9/5/13 TAC Report. Passed
09/05/2013 TAC To recommend approval of NPRR527 as recommended by PRS in the 8/22/13 PRS Report Passed
08/22/2013 PRS To endorse and forward the 7/18/13 PRS Report and Impact Analysis to TAC with a recommended priority of 2014 and rank of 990 Passed
07/18/2013 PRS To recommend approval of NPRR527 as amended by the 6/20/13 PDCWG comments and as revised by PRS Passed
03/21/2013 PRS To table NPRR527 and forward the issue to ROS and WMS to review in conjunction with NPRR524, Resource Limits in Providing Ancillary Service Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.


Status: Approved
Date Posted: Mar 6, 2013
Sponsor: ERCOT
Urgent: No
Sections: 2.1, 2.2,
Description: This Nodal Protocol Revision Request (NPRR) requires Combined Cycle Generation Resources to telemeter individual High Sustainable Limits (HSLs) for gas and steam turbines. The HSLs for combustion and steam turbines were previously submitted in the zonal market and ERCOT requests this practice be resumed in the Nodal market.
Reason: This NPRR allows the Performance, Disturbance, Compliance Working Group (PDCWG) to accurately measure the Primary Frequency Response of individual components of Combined Cycle Generation Resources while using ERCOT collected data necessary to analyze each Measurable Event. Revisions to the ERCOT Nodal ICCP Communications Handbook will be required as a result of this NPRR. The Qualified Scheduling Entity (QSE) Managers Working Group (QMWG) and the PDCWG unanimously agreed that this telemetry needs to be submitted to ERCOT at their 11/28/12 joint meeting. However, in subsequent discussion and vetting of the NPRR in PDCWG meetings, member consensus has developed on the need to have a total Non-Frequency Responsive Capacity (NFRC) value for each Combined Cycle Generation Resource in operation instead of a value of NFRC for each combustion turbine and steam turbine generator component.

Key Documents

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