QSE Managers Working QSE Managers Working GroupGroupMeeting NotesMeeting Notes

10 August, 201010 August, 2010

Report to WMS Report to WMS

18 August, 201018 August, 2010

David Detelich - ChairpersonDavid Detelich - Chairperson

QMWG Topics QMWG Topics

NPRR256, Synchronize Nodal Protocols with PRR787, Add NPRR256, Synchronize Nodal Protocols with PRR787, Add Non-Compliance Language to QSE Performance Standards Non-Compliance Language to QSE Performance Standards (formerly “Add Violation Language to QSE Performance (formerly “Add Violation Language to QSE Performance Standards”Standards”))

2011 Ancillary Service Methodology WMS Recommendations2011 Ancillary Service Methodology WMS Recommendations Generation Resource Energy Deployment Performance Generation Resource Energy Deployment Performance

(GREDP) Calculations and other Nodal Reliability (GREDP) Calculations and other Nodal Reliability Performance Metrics - RecommendationsPerformance Metrics - Recommendations

Draft NPRR: Wind-powered Generation Resource (WGR) / Draft NPRR: Wind-powered Generation Resource (WGR) / Intermittent Renewable Resource (IRR) Base Point DeviationIntermittent Renewable Resource (IRR) Base Point Deviation

WGR Real-Time Production Potential (RTPP) Data and WGR Real-Time Production Potential (RTPP) Data and Meteorological (MET) Data UpdateMeteorological (MET) Data Update

NPRR256, Synchronize Nodal NPRR256, Synchronize Nodal Protocols with PRR787, Add Non-Protocols with PRR787, Add Non-

Compliance Language to QSE Compliance Language to QSE Performance Standards Performance Standards

ERCOT still developing start up and shut ERCOT still developing start up and shut down recommendationsdown recommendations

ERCOT not in agreement on exceptions.ERCOT not in agreement on exceptions. ERCOT will review the 125% rule for ERCOT will review the 125% rule for

regulation deployment: 8.1.1.4.1 (1)regulation deployment: 8.1.1.4.1 (1) Luminant continuing to comment on this Luminant continuing to comment on this

NPRR based on discussion at NATFNPRR based on discussion at NATF

2011 Ancillary Service 2011 Ancillary Service Methodology Methodology

ERCOT reports that the AS Methodology ERCOT reports that the AS Methodology will be presented to the Board of Directors will be presented to the Board of Directors at the September 21, 2010 meeting.at the September 21, 2010 meeting.

The Board will be asked to approve the The Board will be asked to approve the methodology which was presented at the methodology which was presented at the July 2July 2ndnd workshop. workshop.

The document should be posted on the The document should be posted on the meeting page one week prior to the meeting page one week prior to the meeting. meeting.

GREDP Calculations and other Nodal GREDP Calculations and other Nodal Reliability Performance Metrics ReviewReliability Performance Metrics Review

ERCOT producing a business Practices for ERCOT producing a business Practices for LFC documentLFC document Expected to clarify the answers from the AS Expected to clarify the answers from the AS

workshopworkshop

ERCOT may produce an NPRR to cover ERCOT may produce an NPRR to cover issues such as:issues such as: How to make units coming on line available to How to make units coming on line available to

SCEDSCED Quick start unitsQuick start units QMWG expressed a flag may be neededQMWG expressed a flag may be needed

Intervals GREDP is not Intervals GREDP is not CalculatedCalculated

Automatic exclusion of intervals could hurt Automatic exclusion of intervals could hurt scorescore The resource may perform well to frequency event The resource may perform well to frequency event

or emergency base points.or emergency base points. Including passing intervals would help score.Including passing intervals would help score.

QMWG request that ERCOT publish a report QMWG request that ERCOT publish a report of excluded intervals each dayof excluded intervals each day Difficult to determine if frequency deviation is due Difficult to determine if frequency deviation is due

to forced outageto forced outage MP’s need to shadow this metric.MP’s need to shadow this metric.

Methodology ERCOT will be Methodology ERCOT will be using to group LaaR resources using to group LaaR resources into Group A and B on a daily into Group A and B on a daily

basisbasis ERCOT presented methodologyERCOT presented methodology QMWG questions areQMWG questions are

Will the list be available via XML or only a report?Will the list be available via XML or only a report? Can MP’s request to switch groups?Can MP’s request to switch groups?

Concern with deployment by XML and Concern with deployment by XML and compliance timing.compliance timing.

Further actionFurther action

Review ERCOT documents for effect on Review ERCOT documents for effect on compliance measurescompliance measures

Compare GREDP with the AABP from the Compare GREDP with the AABP from the Base Point Deviation Charge.Base Point Deviation Charge.

ERCOT to provide reports that can be ERCOT to provide reports that can be used to set the X, Y and Z used to set the X, Y and Z GREDP/CLREDP performance criteria GREDP/CLREDP performance criteria variablesvariables

6.6.5.26.6.5.2 IRR Generation IRR Generation Resource Base-Point Deviation Resource Base-Point Deviation

ChargeCharge If AABP If AABP q, r, pq, r, p > (HSL > (HSL q, r, pq, r, p –– QIRR) QIRR)

BPDAMT BPDAMT q, r, pq, r, p = = 00

OtherwiseOtherwise

BPDAMTBPDAMT q, r, p q, r, p = = Max (0, RTSPP Max (0, RTSPP

pp) * ) *

Max (0, TWTGMax (0, TWTGq, r, pq, r, p – ¼ – ¼

*AABP*AABP q, r, p q, r, p * (1 + KIRR)) * (1 + KIRR))

IRR Generation Resource Base-Point IRR Generation Resource Base-Point Deviation Charge Applies When:Deviation Charge Applies When:

Metered generation > Adjusted Metered generation > Adjusted Aggregated Base Point * 110%Aggregated Base Point * 110%

And AABP < HSL – 2MWAnd AABP < HSL – 2MW And the QSE cannot show that they took And the QSE cannot show that they took

necessary control actions to control to necessary control actions to control to base point but increasing wind countered base point but increasing wind countered those efforts.those efforts.

HSL for the Hour that includes HSL for the Hour that includes the Settlement Intervalthe Settlement Interval

This has been implemented using the HSL This has been implemented using the HSL from the COP. from the COP.

SCED uses the HSL sent via telemetry SCED uses the HSL sent via telemetry before each SCED run.before each SCED run.

If no curtailment:If no curtailment: HSL will be actual MW outputHSL will be actual MW output Base point will equal that HSLBase point will equal that HSL

Can Implementation result in Can Implementation result in charges under no Curtailment?charges under no Curtailment?

The COP HSL will not be equal to the HSL The COP HSL will not be equal to the HSL used by SCEDused by SCED

The Base Point will not be equal to the The Base Point will not be equal to the HSL in the COP.HSL in the COP.

If COP HSL is greater than Telemetered If COP HSL is greater than Telemetered HSL and Metered Generation is greater HSL and Metered Generation is greater than the Base Point received and the SPP than the Base Point received and the SPP is positive.is positive.

ExampleExample

Calculated ChargeCalculated Charge

Curtailment test is true because:Curtailment test is true because: If AABP If AABP q, r, pq, r, p > (HSL > (HSL q, r, pq, r, p –– QIRR) is false QIRR) is false

27 < 56 - 227 < 56 - 2

BPDAMT = $40 * .25(33 – 27 * 1.1)BPDAMT = $40 * .25(33 – 27 * 1.1) BPDAMT for interval ending 1015 = $33BPDAMT for interval ending 1015 = $33

Solution OptionsSolution Options

Create a flag for curtailmentCreate a flag for curtailment Curtailment may not last the 15 minute intervalCurtailment may not last the 15 minute interval Benefits SCED with latest HSLBenefits SCED with latest HSL

Use GREDP Calculation for IRR BPD chargeUse GREDP Calculation for IRR BPD charge Should frequency exemption apply to Wind Should frequency exemption apply to Wind

Resources?Resources? Apply a charge even when SPP is negativeApply a charge even when SPP is negative

WGR MET Data ValidationWGR MET Data Validation

Next meetingNext meeting

September 7, 2010September 7, 2010 GREDP Calculations and other Nodal GREDP Calculations and other Nodal

Reliability Performance Metrics Review and Reliability Performance Metrics Review and Compliance Compliance

Adjusted Aggregated Base PointAdjusted Aggregated Base Point AWS Truewind forecasts and data AWS Truewind forecasts and data

requirements. requirements. Nodal WGR Issues – Base Point DeviationNodal WGR Issues – Base Point Deviation