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October 3, 2012 BAL-001-TRE-1 Primary Frequency Response Update for Texas RE RSC.

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Presentation on theme: "October 3, 2012 BAL-001-TRE-1 Primary Frequency Response Update for Texas RE RSC."— Presentation transcript:

1 October 3, 2012 BAL-001-TRE-1 Primary Frequency Response Update for Texas RE RSC

2 2 SAR-003 Standard Drafting Team BAL-001-TRE-1 RSC October 3, 2012 NameCompany Sydney Niemeyer (Chair)NRG Energy Ananth Palani (Vice-Chair)Optim Energy Pamela ZdenekInfigen Energy Vann WeldonERCOT Brenda HamptonLuminant Sandip SharmaERCOT (Non-voting SME)

3 3 Requirements Overview ●Applies to BA, GO and GOP function ●Provides requirements for:  Identifying Frequency Measureable Events (FME)  Calculating the Primary Frequency Response (PFR) of each resource in the Region  Calculating the Interconnection minimum Frequency Response  Monitoring the actual Frequency Response of the Interconnection  Setting Governor deadband and droop parameters  Providing Primary Frequency Response performance requirements. ●Importantly, the standard narrows the governor deadband and requires the droop curve to begin at the edge of the deadband with no step function. BAL-001-TRE-1 RSC October 3, 2012

4 4 PFR Performance Measures ●Under this standard, two Primary Frequency Response performance measures are calculated: “initial” and “sustained.” ●The initial PFR performance (R9) measures the actual response compared to the expected response in the period from 20 to 52 seconds after an FME starts. ●The sustained PFR performance (R10) measures the best actual response from t(46) to t(60), compared to the expected response at t(46). BAL-001-TRE-1 RSC October 3, 2012

5 5 Primary Frequency Response Reference Document ●This Primary Frequency Response Reference Document is not considered to be a part of the regional standard. ●This document will be maintained by Texas RE and will be subject to modification as approved by the Texas RE Board of Directors, without being required to go through the formal Standard Development Process.  This arrangement provides Regional flexibility in adjusting the technical details of the performance metric calculations.  The PFR Reference Document includes flowcharts that detail the calculations BAL-001-TRE-1 RSC October 3, 2012

6 6 PFR Reference Document Revision Process ●A Revision Request may be submitted to the Texas RE Reliability Standards Manager ●The Reliability Standards Committee (RSC) will consider the request  The revision request will be posted in accordance with RSC procedures  The RSC shall discuss the revision request in a public meeting, and will accept and consider verbal and written comments pertaining to the request  The RSC will make a recommendation to the Texas RE Board of Directors ●The Board may adopt the revision request, reject it, or adopt it with modifications  Any approved revision to the Primary Frequency Response Reference Document shall be filed with NERC and FERC for informational purposes BAL-001-TRE-1 RSC October 3, 2012

7 7 Technical Document – Initial Flowchart Overview Read Deadband, Droop, HSL, Capacity and Actual Frequency Calculate Ramp Magnitude Calculate Expected Primary Frequency Response Calculate Actual Primary Frequency Response Calculate P.U. Primary Frequency Response Calculate P.U. Primary Frequency Response Rolling Average Is Rolling Avg ≥ 0.75 Pass R9 Fail R9 End No Yes

8 8 Field Trial Results ●28 generating units were evaluated in the trial, which included 7 coal, 4 gas, 2 simple cycle combustion turbine, 5 wind, and 10 combined cycle units. ●Based on events from June 2011 to June ●No high-frequency events were evaluated. ●8-event average was not possible with some units. ●These results use NEW R10 calculation. BAL-001-TRE-1 RSC October 3, 2012

9 9 Field Trial Results – Coal Units BAL-001-TRE-1 RSC October 3, 2012

10 10 Field Trial – Gas Units BAL-001-TRE-1 RSC October 3, 2012

11 11 Field Trial – Wind Units BAL-001-TRE-1 RSC October 3, 2012

12 12 Field Trial – Combined Cycle Units BAL-001-TRE-1 RSC October 3, 2012

13 13 Changes Made after Field Trial and Comments ●Changed Sustained Measure (R10) from average over several minutes to instantaneous at t(46).  Too much happens during former averaging window. ●Added 2 MW limit to the 2% exception criteria.  Applies to generators < 100 MW. ●Moved examples of “legitimate operating conditions that may support exclusion” from Measures to Requirements (R9 and R10). ●M7 re-written to focus on notice from GO to GOP of change in Governor status.  Avoids concern about 24/7 proof issue. ●Changed deadband setting from to Hz. ●Reformatted R2 to break into sub-requirements. ●Intend to deal with augmented capacity issue.  Duct burners, etc. BAL-001-TRE-1 RSC October 3, 2012

14 14 Implementation Plan ●12 months after Effective Date  The BA must be compliant with Requirement R1  At least 50% of the GO’s generating units/generating facilities must be compliant with Requirement R6 (if >1 unit/facility)  At least 50% of the GO’s generating units/generating facilities must be compliant with Requirement R7 (if >1 unit/facility)  The GOP must be compliant with Requirement R8 ●18 months after Effective Date  The BA must be compliant with Requirements R2, R3, R4, and R5  100% of the GO’s generating units/generating facilities must be compliant with Requirement R6  100% of the GO’s generating units/generating facilities must be compliant with Requirement R7 BAL-001-TRE-1 RSC October 3, 2012

15 15 Implementation Plan ●24 months after Effective Date  At least 50% of the GO’s generating units/generating facilities must be compliant with Requirement R9 (if >1 unit/facility)  At least 50% of the GO’s generating units/generating facilities must be compliant with Requirement R10 (if >1 unit/facility) ●30 months after Effective Date  100% of the GO’s generating units/generating facilities must be compliant with Requirement R9  100% of the GO’s generating units/generating facilities must be compliant with Requirement R10 BAL-001-TRE-1 RSC October 3, 2012

16 16 Path Forward ●Drafting Team is finishing standard and related documents.  Expect completion in November. (11/7 SDT Mtg.) ●Submit for RSC approval in November.  Can do by or call a special meeting. ●Post for Review and Ballot in December – January.  Avoid ballot during Holidays. ●RSC Approves ballot results. ●TRE Board approval. ●NERC/FERC process. BAL-001-TRE-1 RSC October 3, 2012

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18 18 R9: Initial Response Performance - Steam Turbine BAL-001-TRE-1 RSC October 3, 2012

19 19 R10: Sustained Response Performance - Steam Turbine BAL-001-TRE-1 RSC October 3, 2012

20 20 R9: Initial Response Performance - Steam Turbine BAL-001-TRE-1 RSC October 3, 2012

21 21 R10: Sustained Response Performance - Steam Turbine BAL-001-TRE-1 RSC October 3, 2012

22 22 R9: Initial Response Performance - Steam Turbine BAL-001-TRE-1 RSC October 3, 2012

23 23 R10: Sustained Response Performance - Steam Turbine while Ramping up before and during event BAL-001-TRE-1 RSC October 3, 2012

24 24 R9: Initial Response Performance - Combustion Turbine with below standard performance BAL-001-TRE-1 RSC October 3, 2012

25 25 R10: Sustained Response Performance – Combustion Turbine with below standard performance BAL-001-TRE-1 RSC October 3, 2012


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