NOGRR #67 · Revision Request

NOGRR067 Review and Analysis of Turbine Speed Governor Performance

Approved sponsor Luminant posted 2011-03-10 ercot.com

ROS Sep 15 '11
TAC Oct 6 '11
BOARD —
PUCT —

ReasonThe current language only says that QSEs shall "monitor" generating unit turbine speed Governor performance. In actuality, each QSE that has a representative serving on the PDCWG reviews and analyzes Generation Resource turbine speed Governor performance for every frequency disturbance event that occurs in ERCOT. A frequency disturbance event is defined by the PDCWG as "system events of +/- 0.1 Hz or greater." Thus, a more accurate description of the actual work being done by QSEs is "review and analyze" as opposed to just "monitor". Also, since the existing term "frequency deviations" is vague and undefined, this NOGRR also revises that term to be "frequency disturbance events" consistent with the PDCWG scope document.

Created2011-04-20

Sections Affected

2.2.7

Summary

This Nodal Operating Guide Revision Request (NOGRR) provides a clearer explanation of the review and analysis performed by a Qualified Scheduling Entity (QSE) related to turbine speed Governor performance during periods of ERCOT System frequency deviations. It also changes the term "frequency deviations" to "frequency disturbance events" consistent with the scope of the Performance Disturbance Compliance Working Group (PDCWG).

Timeline

2011
Mar 10
ROSFiled by Luminant
- 067NOGRR-01 Review and Analysis of Turbine Governor Performance Mar 10 '11 · Revision Request
Apr 20
OWG OWG Meeting
OWGDeferred/Tabled
“Consensus to table NOGRR067 for one month”

→ OWG Language Consideration
- 067NOGRR-03 LCRA Comments 032111 Mar 21 '11 · Revision Request Comments
- 067NOGRR-02 Luminant Energy Comments 032111 Mar 22 '11 · Revision Request Comments
- 067NOGRR-04 PDCWG Comments 041311 Apr 13 '11 · Revision Request Comments
May 18
OWG Operations Working Group (OWG) Meeting
OWGDeferred/Tabled
“Consensus to table NOGRR067”

→ OWG Language Consideration
- 067NOGRR-05 OWG Report 042011 Apr 22 '11 · Committee Report
Jun 15
OWG Operations Working Group (OWG) Meeting
OWGRecommended for Approval Amended by the Jun 13 '11 Luminant comments
“To recommend approval of NOGRR067 as amended by the 6/13/11 Luminant comments.” — Passed

→ Impact Analysis Consideration
- 067NOGRR-06 OWG Report 051811 May 20 '11 · Committee Report
- 067NOGRR-07 Luminant Comments 061311 Jun 13 '11 · Revision Request Comments
Jul 20
OWG Operations Working Group (OWG) Meeting
OWGDeferred/Tabled
“Consensus to table NOGRR067”

→ OWG Review
- 067NOGRR-08 OWG Report 061511 Jun 17 '11 · Committee Report
- 067NOGRR-09 Calpine Comments 062011 Jun 20 '11 · Revision Request Comments
- 067NOGRR-10 Impact Analysis 070611 Jul 6 '11 · Staff Report
- 067NOGRR-11 ERCOT Comments 071411 Jul 14 '11 · Revision Request Comments
Aug 3
PDCWG PDCWG Meeting
- 067NOGRR-12 OWG Report 072011 Jul 25 '11 · Committee Report
Aug 17
OWG Operations Working Group (OWG) Meeting
OWGRecommended for Approval Forwarded → TAC
“Consensus to endorse and forward the 6/15/11 OWG Report and Impact Analysis for NOGRR067 to TAC”

→ ROS Consideration
- 067NOGRR-13 PDCWG Comments 081011 Aug 15 '11 · Revision Request Comments
Sep 15
ROS ROS Meeting
ROSRecommended for Approval
“To recommend approval of NOGRR067 as recommended by OWG in the 8/17/11 OWG Report” — Passed

→ TAC Consideration
- 067NOGRR-14 OWG Report 081711 Sep 13 '11 · Committee Report
Sep 21
OWG Operations Working Group (OWG) Meeting
- 067NOGRR-15 ROS Report 091511 Sep 19 '11 · Committee Report
Oct 6
TAC TAC Meeting
TACApproved
“To approve NOGRR067 as recommended by ROS in the 9/15/11 ROS Report” — Passed
—
Posted since the last meeting
- 067NOGRR-16 TAC Report 100611 Oct 7 '11 · Committee Report