NPRR #119 · Revision Request

NPRR119 Resource Limit Calculator

Approved sponsor ERCOT Staff posted 2008-03-27 next action Consideration ercot.com

ReasonWhen the output MW of a Resource exceeds its telemetered HSL for a short time (e.g. governor response) SCED will attempt to dispatch the Resource above its HSL. Modifying the LDL calculation with a final check will ensure that the LDL and HDL limits calculated by the Resource Limit Calculator (RLC) and sent to SCED do not exceed the HSL under any circumstance.

Created2008-04-18

Approved2008-07-15

Sections Affected

6.5.7.2Resource Limit Calculator

Summary

This Nodal Protocol Revision Request (NPRR) changes the Low Dispatch Limit (LDL) calculation to ensure that the LDL and High Dispatch Limit (HDL) limit sent to the Security Constrained Economic Dispatch (SCED) do not exceed the High Sustained Limit (HSL) under any circumstance.

Timeline

Mar 27 '08
PRSFiled by ERCOT Staff
- 119NPRR-01 Resource Limit Calculator 032708 Mar 27 '08 · Revision Request
Apr 18 '08
PRS PRS Meeting
PRSReferred Referred → TPTF
“To refer NPRR119 to TPTF.” — Passed

→ Review by the TPTF.
Apr 21 '08
Listed without action at 1 meeting
- TPTF Meeting Apr 21 '08
May 22 '08
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval
“To recommend approval of NPRR119 as submitted.” — Passed

→ Review of Impact Analysis and Recommendation Report.
- 119NPRR-02 PRS Action Report 041808 Apr 22 '08 · Committee Report
May 28 '08
CREDITWG Credit Work Group Meeting
- 119NPRR-04 PRS Recommendation Report 052208 May 28 '08 · Committee Report
Jun 19 '08
PRS PRS Meeting
PRSRecommended for Approval Recommended for approval Forwarded → TAC
“To endorse the Impact Analysis and Recommendation Report for NPRR119, and forward the documents to TAC.” — Passed

→ Consideration of NPRR119 by TAC
- 119NPRR-05 Impact Analysis 060208 Jun 2 '08 · Staff Report
- 119NPRR-06 PRS Recommendation Report 061908 Jun 19 '08 · Committee Report
Jun 26 '08
TAC TAC Meeting
TACRecommended for Approval Recommended for approval
“To recommend approval of NPRR119 as recommended by PRS.” — Passed

→ ERCOT Board consideration
Jul 15 '08
BOARDEmail Vote / Unlisted Meeting
BOARDApproved Approved
“To approve NPRR119 as recommended by TAC.” — Passed
- 119NPRR-07_TAC_Recommendation_Report_062608 Jun 27 '08 · Committee Report
Aug 31 '10
NATF NATF Meeting
- 119NPRR-08 Board Action Report 071508 Jul 17 '08 · Committee Report
- 119NPRR-03 TPTF Voting Ballot 042108 Feb 6 '09 · Revision Request Ballot
Sep 23 '10
Listed without action at 3 meetings (Sep 23 '10 – Nov 4 '10)
- PRS Meeting Sep 23 '10
- PRS Meeting Oct 21 '10
- TAC Meeting Nov 4 '10