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NPRR #178 · Revision Request

NPRR178  Regulation Reduction (GS-FR3) and Reg-Up/Reg-Down Allocation to QSEs

Approved sponsor ERCOT posted 2009-05-26 ercot.com
ReasonBy utilizing the movement of other units toward their Base Points, it is expected that this will result in improved frequency control and better operation. The regulation requests for each control cycle of each QSE are limited to 125% of the total amount of Regulation Service in ERCOT divided by the number of control cycles in five minutes. Since the full amount of Reg-Up/Reg-Down responsibility is realizable in five-minutes and compliance is also on a five-minute basis, there is no explicit need to constrain the QSE regulation requests in each control cycle.
Created2009-06-18
Approved2009-08-18
Sections Affected
6.5.7.6.1
Summary
The purpose of this Nodal Protocol Revision Request (NPRR) is to bring the Nodal Protocols in line with the nodal program implementation: * Changes to the regulation reduction calculation to account for movements in generation due to units getting updated Base Points from Load Frequency Control (LFC). * The other change is regarding the Regulation Up (Reg-Up)/Regulation Down (Reg-Down) allocation to Qualified Scheduling Entities (QSEs) to take out the constraint for each four-second interval, since the full amount of Reg-Up/Reg-Down responsibility is realizable in five-minutes and compliance is also on a five-minute basis.
Action Log 4 milestones
Documents 7
NameTypePostedClassification
178NPRR-01 Regulation Reduction (GS-FR3) and Reg-UpReg-Down Allo doc May 26 '09 Revision Request
178NPRR-02 CEO Revision Request Review 052609 doc Jun 17 '09 Revision Request Comments
178NPRR-03 PRS Recommendation Report 061809 doc Jun 22 '09 Committee Report
178NPRR-04 Impact Analysis 071709 doc Jul 17 '09 Staff Report
178NPRR-05 PRS Recommendation Report 072309 doc Jul 27 '09 Committee Report
178NPRR-06 TAC Recommendation Report 080609 doc Aug 7 '09 Committee Report
178NPRR-07 Board Action Report 081809 doc Aug 20 '09 Committee Report
Meetings That Took It Up 3
DateMeetingCommitteeStatus
Aug 6 '09 TAC Meeting TAC Concluded
Jul 23 '09 PRS Meeting PRS Concluded
Jun 18 '09 PRS Meeting PRS Concluded