pdcwg report to ros
DESCRIPTION
PDCWG Report to ROS. July 10, 2014. Sydney Niemeyer Chair NRG Energy Don Blackburn Vice Chair Luminant Energy. PDCWG Meeting July 1, 2014. Reviewed June frequency control. Improved CPS1 & 2. Frequency Profile continues to be on the high side. - PowerPoint PPT PresentationTRANSCRIPT
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PDCWGReport to ROS
Sydney Niemeyer ChairNRG Energy
Don Blackburn Vice ChairLuminant Energy
July 10, 2014
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PDCWG Meeting July 1, 2014
• Reviewed June frequency control.– Improved CPS1 & 2.– Frequency Profile continues to be on the high side.
• Causes were discussed: More small high frequency “events” (small up swings in frequency). Non-conforming load MW change larger on “turn-offs” than “turn-on” would contribute to larger upswings. Must have data to prove.
• Wind turbines help with high frequency but typically not with low frequency. This keeps high frequency limited to a tighter profile on the high side.
• Two “Normal” curve profiles were suggested.– Fewer Time Error Corrections in June.
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PDCWG Meeting
• BAL-001-TRE– Implementation timeline was discussed. ERCOT and
TRE will meet to confirm dates.– Resources requesting a waiver from the standard as
allowed in the standard requested the process for confirming the waiver.
– RARF additional information needed for conventional steam turbines. A revision request will be written.
– Protocol and Operating Guide revisions will be needed and are being developed.
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PDCWG Meeting
• Reviewed June 21 frequency event.– RRS providers had 5 Resources with below expected
performance.– Non-RRS providers had 4 Resources with below
expected performance.• Reviewed June 7 frequency event.
– RRS providers had 2 Resources with below expected performance.
– Non-RRS providers had 9 Resources with below expected performance, poor data or inaccurate HSLs.
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PDCWG Meeting
• Reviewed June 23 frequency event.– RRS providers had 4 Resources with less than
expected performance.– Non-RRS providers had 8 Resources with less than
expected performance due to either on augmented energy or errors in their HSL.
• Interconnection Primary Frequency Response was excellent during each event.– -694 MW/0.1 Hz, -847 MW/0.1 Hz and -1215
MW/0.1 Hz during the 21st, 7th and 23rd events.
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PDCWG Meeting
• ERCOT will provide the PDCWG an estimate of System Inertia data in each Frequency Disturbance Report prepared for the PDCWG.
• A request for high speed frequency data on each event was requested.
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“New” Future Meeting Dates
• August 21, 2014• September 10, 2014• October 7, 2014• November 11, 2014• December 2, 2014
– All meetings at the Met Center.
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ERCOT Frequency Control ReportJune 2014
Sydney Niemeyer NRG EnergyJuly 1, 2014
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ERCOT FREQUENCY CONTROLBAL-001 CPS 1 & 2 Performance, RMS 1 and Frequency Profile
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ERCOT CPS1 By Day -
CPS 1 Avg CPS 1 Peak Energy
June-2014
167.02ERCOT Monthly CPS1 =
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ERCOT CPS2 By Day -
CPS 2 Avg CPS 2 Peak Energy
June-2014
99.33ERCOT Monthly CPS2 =
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Interval Ending
ERCOT CPS1 15 Minute Average - Monthly Score
June-2014 167.02CPS 1 =
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CP
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ERCOT CPS1
Monthly Average 12 Month Rolling Average
CPS1 12 Month Rolling Average = 162.86
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CP
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Month
ERCOT CPS2 Score*
CPS2
*ERCOT as a single control area is exempt from CPS2. These scores are For Information Only
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0.0100
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Daily RMS1 of ERCOT Frequency
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0.0100
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Daily RMS1 of ERCOT Frequency
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0.0100
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Daily RMS1 of ERCOT Frequency
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60.010 <= HZ < 60.015
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Comparing June 2010 vs June 2014 profile of frequency in 5 mHz bins
Jun-10
Jun-14
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ERCOT Frequency Profile Comparison
2010 2014
January through December of each Year
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ERCOT TIME ERROR AND TIME CORRECTION
Time Error History
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Notes
• Time error values from NRG True Time device can be slightly different from ERCOT’s Time Error but the daily delta times should be accurate.
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Time Error Corrections
• Four slow Time Error Corrections were executed in June.
• Other than the days with the TECs, 3 days had positive time error.
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ERCOT Time Error
Daily Delta Time Error
June-2014
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ERCOT Time Error & Time Change
Time Change Time Error
July-2013June-2014
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Time Correction HistoryTotal Hours on Avg Hours Avg Corrections % Time on
Year Month Days Fast Slow Count Control Per Correction Per Day CorrectionTime Corrections
2013 Jan 31 0 3 3 9.50 3.17 0.10 1.3%Feb 28 0 6 6 18.00 3.00 0.21 2.7%Mar 31 0 5 5 17.50 3.50 0.16 2.4%Apr 30 0 1 1 5.50 5.50 0.03 0.8%May 31 0 2 2 8.50 4.25 0.06 1.1%Jun 30 0 3 3 12.50 4.17 0.10 1.7%Jul 31 0 0 0 0.00 0.00 0.00 0.0%Aug 31 0 0 0 0.00 0.00 0.00 0.0%Sep 30 0 0 0 0.00 0.00 0.00 0.0%Oct 31 0 0 0 0.00 0.00 0.00 0.0%Nov 30 0 0 0 0.00 0.00 0.00 0.0%Dec 31 0 2 2 11.50 5.75 0.06 1.5%
2014 Jan 31 0 6 6 21.75 3.63 0.19 2.9%Feb 28 0 5 5 16.50 3.30 0.18 2.5%Mar 31 0 7 7 22.00 3.14 0.23 3.0%Apr 30 0 9 9 28.00 3.11 0.30 3.9%May 31 0 11 11 35.50 3.23 0.35 4.8%Jun 30 0 4 4 12.92 3.23 0.13 1.8%Jul 31 0.00 0.0%Aug 31 0.00 0.0%Sep 30 0.00 0.0%Oct 31 0.00 0.0%Nov 30 0.00 0.0%Dec 31 0.00 0.0%
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Monthly Hours on Time Correction
Hours on Control
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Nu
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sMonthly Time Correction Summary
Slow Fast
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ERCOT PRIMARY FREQUENCY RESPONSE PERFORMANCE
BAL-003-1 Interconnection Frequency Response and Bias Measure.
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ERCOT Primary Frequency Response – BAL-003-12015 Bias and Frequency Response Measure
Date/Time (t-0) BA BA BA Relay Lmt Value "A" Information Value "B" Information SEFRD (FRM)Time Bias R1 for Bias for R1
BA Time Zone DelFreq Time DelFreq DelFreq MW/Load Lost Adjustment MW/Load Lost Adjustment (MW/0.1Hz) (MW/0.1Hz)
12/2/2013 16:03:54 CST -0.115 16:03:54 -0.115 -0.115 0.0 0.0 842.2 0.0 -729.4 -729.4
12/8/2013 13:07:30 CST -0.068 13:07:30 -0.068 -0.068 0.0 0.0 576.7 0.0 -842.6 -842.6
12/9/2013 8:43:12 CST -0.097 8:43:12 -0.097 -0.097 0.0 0.0 905.2 0.0 -931.6 -931.6
12/17/2013 11:45:44 CST -0.089 11:45:44 -0.089 -0.089 0.0 0.0 785.6 0.0 -881.8 -881.8
12/30/2013 9:44:22 CST -0.108 9:44:22 -0.108 -0.108 0.0 0.0 784.5 0.0 -727.4 -727.4
1/6/2014 8:10:48 CST -0.128 8:10:48 -0.128 -0.128 0.0 0.0 880.8 0.0 -685.6 -685.6
1/13/2014 4:19:44 CST -0.104 4:19:44 -0.104 -0.104 0.0 0.0 834.6 0.0 -799.3 -799.3
1/25/2014 12:07:02 CST -0.077 12:07:02 -0.088 -0.088 0.0 0.0 656.9 0.0 -746.2 -746.2
2/20/2014 21:06:54 CST -0.108 21:06:54 -0.108 -0.108 0.0 0.0 454.2 0.0 -421.4 -421.4
2/28/2014 13:25:56 CST -0.101 13:25:56 -0.101 -0.101 0.0 0.0 515.5 0.0 -512.2 -512.2
3/2/2014 7:37:40 CST -0.105 7:37:40 -0.105 -0.105 0.0 0.0 542.2 0.0 -515.8 -515.8
3/3/2014 7:31:50 CST -0.076 7:31:50 -0.076 -0.076 0.0 0.0 540.9 0.0 -707.5 -707.5
3/10/2014 18:29:28 CDT -0.099 18:29:28 -0.099 -0.099 0.0 0.0 798.2 0.0 -805.4 -805.4
3/19/2014 8:41:08 CDT -0.097 8:41:08 -0.097 -0.097 0.0 0.0 770.2 0.0 -797.4 -797.4
4/2/2014 0:33:26 CDT -0.107 0:33:26 -0.107 -0.107 0.0 0.0 470.7 0.0 -441.2 -441.2
4/29/2014 8:57:58 CDT -0.058 8:57:58 -0.058 -0.058 0.0 0.0 464.0 0.0 -804.7 -804.7
5/1/2014 15:13:50 CDT -0.100 15:13:50 -0.100 -0.100 0.0 0.0 559.1 0.0 -561.6 -561.6
5/13/2014 12:31:02 CDT 0.069 12:31:02 0.069 0.069 0.0 0.0 -420.1 0.0 -608.7 -608.7
5/15/2014 4:20:24 CDT -0.068 4:20:24 -0.068 -0.068 0.0 0.0 447.1 0.0 -655.4 -655.4
5/17/2014 0:47:26 CDT -0.062 0:47:26 -0.062 -0.062 0.0 0.0 573.6 0.0 -917.8 -917.8
6/7/2014 10:31:44 CDT -0.062 10:31:44 -0.062 -0.062 0.0 0.0 523.0 0.0 -847.2 -847.2
6/21/2014 0:58:30 CDT -0.090 0:58:30 -0.090 -0.090 0.0 0.0 625.9 0.0 -694.8 -694.8
6/23/2014 13:02:04 CDT -0.071 13:02:04 -0.071 -0.071 0.0 0.0 861.1 0.0 -1215.3 -1215.3
-732.61 2014 FRM - Average Estimated Frequency Response MW/0.1 Hz using SEFRD for R1
-701.89 2014 FRM - Regression Estimated Frequency Response MW/0.1Hz using SEFRD for R1
-729.41 2014 FRM - Median Estimated Frequency Response MW/0.1Hz for BA Compliance to R1, minimum Frequency Response
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ERCOT TOTAL ENERGY AND WIND PRODUCTION
October Total ERCOT Energy and Total Energy Production from Wind Resources.
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15,000,000
20,000,000
25,000,000
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35,000,000
40,000,000
45,000,000
MW
H
ERCOT Total Energy
2008 2009 2010 2011 2012 2013 2014
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1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
4,000,000
4,500,000
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H
ERCOT Total Energy from Wind Generation
2008 2009 2010 2011 2012 2013 2014
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0.00%
2.00%
4.00%
6.00%
8.00%
10.00%
12.00%
14.00%
16.00%
ERCOT % Energy from Wind Generation
2008 2009 2010 2011 2012 2013 2014