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NPRR #354 · Revision Request

NPRR354  Revisions to Non-Spin Performance Criteria Language and Provision for ICCP Telemetry of Non-Spin Deployment

Approved sponsor WMS posted 2011-04-15 ercot.com
ReasonThis NPRR is necessary to address issues realized during Nodal stabilization. The Non-Spin performance criteria in Section 6.5.7.6.2.3, paragraph (4) requires revision to make them consistent with Section 8.1.1.4.3, paragraph (3). The full deployment of Non-Spin capacity must be released and available for SCED within 25 minutes. The current XML notification of Non-Spin deployment is not adequate for such a crucial operating parameter due to the high volume of XML notifications that normally occur. By relying on an XML notification, the QSE’s awareness of the need to start Resources for system reliability in response to a market notification can be delayed. The Non-Spin deployment flag communicated via ICCP is necessary to immediately notify the QSEs of Non-Spin deployments when timely deployment of Off-Line Resources is critical to provide capacity for system reliability.
Created2011-05-19
Approved2011-09-20
Sections Affected
6.5.7.6.2.38.1.1.4.3
Summary
This Nodal Protocol Revision Request (NPRR) clarifies the performance criteria for Non-Spinning Reserve (Non-Spin) Service deployments, adds language for provision of a Non-Spin deployment flag to Qualified Scheduling Entities (QSEs) via Inter-Control Center Communications Protocol (ICCP), and adds a requirement for Extensible Markup Language (XML) notification to all QSEs when Non-Spin is deployed. Specifically, a clarification for the requirement that a Resource be "released to SCED" is added to Sections 6.5.7.6.2.3 and 8.1.1.4.3 to clarify the expectation of ERCOT that at 25 minutes after receipt of the deployment instruction, the Resource must be participating in Security-Constrained Economic Dispatch (SCED) at a net MW output at least equal to its Low Sustained Limit (LSL). The requirements for the three Resource types providing Non-Spin have been divided into separate paragraphs, one each for Load, On-Line and Off-Line Generation Resources. In addition, Generation Resources that are providing Non-Spin from Off-Line Generation Resources would be entitled to receive a compliance exemption for documented start-up loading failures. This language is adopted from the zonal Protocols and is included to recognize the difficulty inherent in unit start-up from a cold state for immediate deployment.
Action Log 5 milestones
Amendments
DateBodyMotionResult
May 19 '11PRS To recommend approval of NPRR354 as amended by the 4/29/11 ERCOT comments.Passed
Documents 10
NameTypePostedClassification
354NPRR-01 Revisions to Non-Spin Performance Criteria Language a doc Apr 15 '11 Revision Request
354NPRR-02 ERCOT Comments 042911 doc Apr 29 '11 Revision Request Comments
354NPRR-03 PRS Report 051911 doc May 23 '11 Committee Report
354NPRR-04 Impact Analysis 061711 doc Jun 17 '11 Staff Report
354NPRR-05 Preliminary Cost Benefit Analysis 062211 xls Jun 22 '11 Staff Report
354NPRR-06 PRS Report 062311 doc Jun 27 '11 Committee Report
354NPRR-07 PRS Report 072111 doc Jul 25 '11 Committee Report
354NPRR-08 Cost Benefit Analysis 080311 xls Aug 3 '11 Staff Report
354NPRR-09 TAC Report 080411 doc Aug 8 '11 Committee Report
354NPRR-10 Board Report 092011 doc Sep 21 '11 Committee Report
Meetings That Took It Up 5
DateMeetingCommitteeStatus
Sep 20 '11 Board of Directors Meeting BOARD Concluded
Aug 4 '11 TAC Meeting TAC Concluded
Jul 21 '11 PRS Meeting PRS Concluded
Jun 23 '11 PRS Meeting PRS Concluded
May 19 '11 PRS Meeting PRS Concluded