pdcwg report to ros january 14, 2010 sydney niemeyer
TRANSCRIPT
PDCWG Report to ROS
January 14, 2010
Sydney Niemeyer
PDCWG Activities
• Will meet January 13.– Review December disturbances.
• Early withdrawal of Primary Frequency Response observed on 3 events in December. See last slide for an example. This is a concern for Nodal Operation and the difference in RRS deployment from Zonal Operation.
– Operating Guide and Protocol synchronization.– DER
• Test procedure review.• Develop frequency profile during breaker open disturbances
for timing of DER response.– ERCOT Frequency RMS1 2009 analysis. Box plot
analysis added to report.• Next meeting February 10.
ERCOT CPS1 15 Minute Average - Monthly Score
0
20
40
60
80
100
120
140
160
180
Interval Ending
December-09 CPS1 = 147.60*
ERCOT CPS1 By Day - December 2009
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Day
0
3500
7000
10500
14000
17500
21000
24500
28000
31500
35000
38500
42000
45500
49000
52500
56000
59500
63000
66500
70000
CPS1 Avg CPS1 ERCOT Pk Load
147.60 Monthly CPS1 for ERCOT
*Unofficial CPS1 value
*
ERCOT CPS2 - December 2009
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Day
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
CPS2 Avg CPS2
Monthly CPS2 for ERCOT89.92
*Unofficial CPS2 value
*
Daily RMS1
0.0100
0.0150
0.0200
0.0250
0.0300
0.0350
0.0400
1/1/2
000
7/1/2
000
1/1/2
001
7/1/2
001
1/1/2
002
7/1/2
002
1/1/2
003
7/1/2
003
1/1/2
004
7/1/2
004
1/1/2
005
7/1/2
005
1/1/2
006
7/1/2
006
1/1/2
007
7/1/2
007
1/1/2
008
7/1/2
008
1/1/2
009
7/1/2
009
of ERCOT Frequency
Daily RMS1
0.0100
0.0150
0.0200
0.0250
0.0300
0.0350
0.0400
1/1/
2004
4/1/
2004
7/1/
2004
10/1
/200
4
1/1/
2005
4/1/
2005
7/1/
2005
10/1
/200
5
1/1/
2006
4/1/
2006
7/1/
2006
10/1
/200
6
1/1/
2007
4/1/
2007
7/1/
2007
10/1
/200
7
1/1/
2008
4/1/
2008
7/1/
2008
10/1
/200
8
1/1/
2009
4/1/
2009
7/1/
2009
10/1
/200
9
100
110
120
130
140
150
160
170
Jul-02S
ep-02N
ov-02Jan-03M
ar-03M
ay-03Jul-03S
ep-03N
ov-03Jan-04M
ar-04M
ay-04Jul-04S
ep-04N
ov-04Jan-05M
ar-05M
ay-05Jul-05S
ep-05N
ov-05Jan-06M
ar-06M
ay-06Jul-06S
ep-06N
ov-06Jan-07M
ar-07M
ay-07Jul-07S
ep-07N
ov-07Jan-08M
ar-08M
ay-08Jul-08S
ep-08N
ov-08Jan-09M
ar-09M
ay-09Jul-09S
ep-09N
ov-09C
PS
1 A
ve
rag
e
100
110
120
130
140
150
160
170
Monthly Average 12 Month Rolling Average Trend
ERCOT CPS1 Score
CPS1 12 Month Rolling Average = 141.00*
*Unofficial CPS1 value
ERCOT CPS2 Score*
70
75
80
85
90
95
100
Aug-04
Nov-04
Feb-05M
ay-05A
ug-05N
ov-05Feb-06M
ay-06A
ug-06N
ov-06Feb-07M
ay-07A
ug-07N
ov-07Feb-08M
ay-08A
ug-08N
ov-08Feb-09M
ay-09A
ug-09N
ov-09
Month
CP
S2
Series1 Trend (Monthly CPS2 Score)
*ERCOT as a single control area is exempt from CPS2. These scores are For Information Only
89.92**
**Unofficial CPS2 value
Comparing January 2009 vs January 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Jan-09Jan-08
Comparing February 2009 vs February 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Feb-09Feb-08
Comparing March 2009 vs March 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Mar-09
Mar-08
Comparing April 2009 vs April 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Apr-09Apr-08
Comparing May 2009 vs May 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
May-09May-08
Comparing June 2009 vs June 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Jun-09Jun-08
Comparing July 2009 vs July 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
Jul-09Jul-08
Comparing August 2009 vs August 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Aug-09Aug-08
Comparing September 2009 vs September 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
59.90
0
59.91
0
59.92
0
59.93
0
59.94
0
59.95
0
59.96
0
59.97
0
59.98
0
59.99
0
60.00
0
60.01
0
60.02
0
60.03
0
60.04
0
60.05
0
60.06
0
60.07
0
60.08
0
60.09
0
60.10
0
Sept-09
Sept-08
Comparing October 2009 vs October 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
Oct-09Oct-08
Comparing November 2009 vs November 2008 profile of frequency in 5 mHz bins
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
Nov-09Nov-08
Comparing December 2008 vs December 2009 profile of frequency in 5 mHz bins
00.010.020.030.040.050.060.070.080.09
0.1
Dec-09Dec-08
Year
Hz
200920082007200620052004
0.0075
0.0050
0.0025
0.0000
-0.0025
-0.0050
0
ERCOT Daily Frequency Ave vs Year
Year
Hz
200920082007200620052004
0.040
0.035
0.030
0.025
0.020
0.015
0.03
ERCOT Daily RMS1 vs Year
Month
Hz
121110987654321
0.0325
0.0300
0.0275
0.0250
0.0225
0.0200
0.0175
0.0150
0.03
ERCOT 2009 Daily RMS1 vs Month
Sample
Sam
ple
Mean
5045403530252015105
0.030
0.025
0.020
0.015
__X=0.02287
UCL=0.03058
LCL=0.01517
Sample
Sam
ple
Range
5045403530252015105
0.016
0.012
0.008
0.004
0.000
_R=0.00694
UCL=0.01336
LCL=0.00052
1
11
11
Xbar-R Chart of ERCOT Daily RMS1 (Grouped by Weeks)
Observation
Indiv
idual V
alu
e
36032428825221618014410872361
0.0325
0.0300
0.0275
0.0250
0.0225
0.0200
0.0175
0.0150
_X=0.02287
UCL=0.02851
LCL=0.017231
11
11
11
11
1
1
1
11
111
1
ERCOT 2009 Daily Process Control Chart of RMS1
ERCOT Total Load and Total Wind Generation MWH
0
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
14,000,000
16,000,000
18,000,000
20,000,000
22,000,000
24,000,000
26,000,000
28,000,000
30,000,000
32,000,000
34,000,000
January February March April May June July August September October November December
Lo
ad a
nd
To
tal
Win
d G
ener
atio
n M
WH
0.0%
0.6%
1.2%
1.8%
2.4%
3.0%
3.6%
4.2%
4.8%
5.4%
6.0%
6.6%
7.2%
7.8%
8.4%
9.0%
9.6%
10.2%
Win
d %
of
To
tal
Lo
ad
ERCOT Load Total Wind Wind %
307,447,438
18,279,706
5.95%
2009 Total Load2009 Total Wind
2009 Wind %
MWH
MWH
High-Speed Frequency Recorder Data
59.86
59.88
59.9
59.92
59.94
59.96
59.98
60
60.02
60.04
12/04/0901:12:26
12/04/0901:12:35
12/04/0901:12:43
12/04/0901:12:52
12/04/0901:13:00
12/04/0901:13:09
12/04/0901:13:18
12/04/0901:13:26
12/04/0901:13:35
12/04/0901:13:44
12/04/0901:13:52
12/04/0901:14:01
Date and Time (mm/dd/yy hh:mm:ss)
Fre
qu
ency
(H
z)
Early withdrawal of Primary Frequency Response!
Sustained Primary Frequency Response.
Early withdrawal of Primary Frequency Response will contribute to grid instability.