frequency response standard. ercot governor droop
TRANSCRIPT
LaaR's % Turbineof Frequency
Responsive ResponseReserve Standard
% MW/0.1Hz25 42035 37845 33650 32160 27370 23175 210
Frequency Response Standard
DATE09/06/0210/13/0210/28/0210/30/0211/16/0211/30/0212/14/0212/15/0212/20/0212/27/0202/05/0302/12/0302/21/0303/01/0303/29/0304/11/0304/12/0304/15/0304/15/0304/24/0304/25/0305/15/03
ERCOTTurbineDroop12.77%19.39%18.65%13.74%12.18%12.09%20.03%18.05%9.00%14.21%13.10%13.08%15.01%11.89%13.16%11.18%10.42%9.93%7.35%20.05%12.36%16.09%
13.81%
"B" PointMeasuredTurbineDroop13.5320.5118.159.879.4911.4617.1813.188.9012.7913.8913.1213.638.737.8619.557.839.448.1615.7214.3616.10
12.88 1.26
TurbinePerformanceMW/0.1 Hz
470.96244.28345.67634.72586.28494.15330.60431.54675.05433.96449.24461.84479.49634.31676.86302.16741.43573.34750.22413.67448.04374.78
497.84
ERCOT Governor DroopTurbine
Performanceto Freq Resp
Standard1.120.650.821.511.401.180.781.021.611.031.181.221.261.681.790.801.961.521.981.091.180.99
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 15.4 0.93 0.00 62.43% 44.5310/13/02 78.8 0.55 0.00 40.43% 34.8610/28/02 13.8 0.78 0.00 59.30% 33.0810/30/02 21.9 0.78 0.00 58.11% 24.8111/16/02 100.0 0.63 0.00 66.49% 35.2111/30/02 8.9 0.78 0.78 83.73% 44.2912/14/02 25.6 0.74 0.71 85.04% 46.5312/15/02 100.0 0.66 0.70 76.30% 42.3512/20/02 22.4 0.67 0.61 77.38% 43.5412/27/02 34.9 0.63 0.54 74.89% 42.6402/05/03 45.7 0.61 0.60 71.25% 46.2702/12/03 12.9 0.66 0.54 80.12% 45.0902/21/03 25.8 0.66 0.55 81.20% 44.2503/01/03 19.8 0.67 0.68 81.62% 41.2903/29/03 44.1 0.65 0.62 78.76% 38.5404/11/03 14.2 0.68 0.80 79.27% 39.8204/12/03 11.0 0.79 1.03 81.42% 39.8104/15/03 4.5 0.94 1.41 97.97% 39.3704/15/03 15.7 0.96 1.49 97.76% 38.4304/24/03 29.0 0.99 1.43 95.22% 37.1304/25/03 20.9 0.95 1.54 93.47% 39.9305/15/03 11.6 1.04 1.62 93.35% 38.12
30.8
QSE 1 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 8.0 2.25 0.00 115.12% 85.3110/13/02 7.8 1.97 0.00 103.75% 42.6610/28/02 9.7 1.87 0.00 98.41% 61.7710/30/02 7.5 1.92 0.00 100.44% 46.3311/16/02 8.2 1.87 0.00 101.71% 37.0611/30/02 5.8 1.91 1.91 103.49% 30.8912/14/02 8.9 1.82 1.75 100.99% 26.4712/15/02 11.5 1.73 1.65 97.75% 24.2912/20/02 6.1 1.75 1.70 99.63% 21.5912/27/02 5.9 1.77 1.67 100.70% 21.4402/05/03 11.6 1.75 1.65 98.26% 21.5202/12/03 12.8 1.70 1.50 97.39% 24.5602/21/03 12.9 1.66 1.47 98.18% 22.6703/01/03 7.4 1.65 1.55 100.35% 26.2503/29/03 7.4 1.65 1.49 102.95% 24.5004/11/03 8.8 1.62 1.47 105.29% 24.2304/12/03 6.3 1.65 1.57 109.09% 22.8104/15/03 8.0 1.65 1.65 108.59% 27.5204/15/03 5.5 1.69 1.92 108.73% 26.0704/24/03 8.2 1.70 1.95 109.55% 24.7704/25/03 8.7 1.66 1.94 109.30% 23.5905/15/03 11.1 1.68 1.88 108.20% 39.58
8.5
QSE 2 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 100.0 0.15 0.00 1000.00% 29.0010/13/02 100.0 0.08 0.00 550.00% 64.5010/28/02 100.0 0.07 0.00 700.00% 43.0010/30/02 100.0 0.07 0.00 775.00% 57.2511/16/02 48.2 0.10 0.00 820.00% 65.8011/30/02 63.6 0.11 0.11 850.00% 152.6412/14/02 100.0 0.10 0.09 742.86% 145.1212/15/02 100.0 0.08 0.09 662.50% 139.4812/20/02 100.0 0.09 0.10 700.00% 2472.9412/27/02 53.3 0.10 0.12 730.00% 2235.6502/05/03 100.0 0.09 0.08 672.73% 2041.5002/12/03 67.3 0.10 0.09 700.00% 1879.7102/21/03 100.0 0.10 0.10 723.08% 1795.7003/01/03 51.6 0.11 0.15 742.86% 1674.5803/29/03 76.9 0.12 0.15 760.00% 1569.1204/11/03 100.0 0.11 0.14 775.00% 1477.3004/12/03 39.1 0.14 0.20 788.24% 1396.2804/15/03 73.6 0.15 0.20 800.00% 1324.2704/15/03 100.0 0.15 0.21 810.53% 1311.4804/24/03 100.0 0.14 0.17 820.00% 1250.9104/25/03 80.3 0.14 0.18 828.57% 1233.1005/15/03 100.0 0.15 0.18 836.36% 1181.60
84.3
QSE 3 Performance
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 19.7 1.18 0.00 1000.00% 91.1810/13/02 32.6 0.88 0.00 1000.00% 81.7510/28/02 30.1 0.80 0.00 1000.00% 122.1810/30/02 21.1 0.78 0.00 1000.00% 117.2411/16/02 18.9 0.80 0.00 1000.00% 113.6411/30/02 20.6 0.79 0.79 1000.00% 121.3412/14/02 9.9 1.08 1.06 1000.00% 104.0012/15/02 11.7 1.11 1.19 1000.00% 104.0212/20/02 12.5 1.15 1.32 1000.00% 103.7412/27/02 21.3 1.13 1.36 1000.00% 98.5502/05/03 7.4 1.21 1.56 1000.00% 100.5002/12/03 34.1 1.16 1.53 1000.00% 100.6802/21/03 18.8 1.16 1.25 936.72% 96.8303/01/03 5.3 1.24 1.42 941.24% 95.2403/29/03 9.5 1.26 1.44 945.16% 108.1604/11/03 100.0 1.19 1.28 892.34% 101.4004/12/03 41.3 1.18 1.02 898.67% 95.4404/15/03 7.4 1.34 1.42 904.30% 91.6404/15/03 17.2 1.36 1.41 909.34% 88.2804/24/03 13.9 1.40 1.26 913.87% 90.2104/25/03 20.5 1.40 1.12 917.97% 90.8405/15/03 29.4 1.25 1.22 921.70% 88.51
22.9
QSE 4 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 8.9 1.65 0.00 71.53% 0.0010/13/02 16.8 1.39 0.00 61.75% 0.2510/28/02 100.0 0.93 0.00 41.16% 0.1710/30/02 100.0 0.70 0.00 30.87% 0.1311/16/02 100.0 0.56 0.00 24.70% 8.8811/30/02 24.9 0.56 0.56 24.82% 8.5012/14/02 12.0 0.73 0.58 31.58% 8.7612/15/02 81.1 0.67 0.43 28.98% 7.6712/20/02 100.0 0.59 0.43 25.76% 8.1112/27/02 89.5 0.55 0.46 24.20% 7.3002/05/03 100.0 0.50 0.46 22.00% 6.6702/12/03 17.8 0.56 0.56 24.27% 7.5602/21/03 100.0 0.52 0.27 22.45% 6.9803/01/03 22.0 0.53 0.34 23.68% 6.4803/29/03 95.0 0.52 0.40 22.42% 6.7304/11/03 100.0 0.41 0.37 21.02% 6.3104/12/03 100.0 0.33 0.37 19.79% 7.2604/15/03 9.7 0.47 0.52 23.73% 8.4804/15/03 28.7 0.52 0.64 24.08% 10.9204/24/03 100.0 0.52 0.53 22.87% 10.4304/25/03 100.0 0.48 0.47 21.78% 9.9305/15/03 100.0 0.36 0.47 20.79% 9.48
68.5
QSE 5 Performance
0.00
0.50
1.00
1.50
2.00
2.50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 10.3 1.30 0.00 65.40% 160.3210/13/02 25.4 0.89 0.00 47.69% 114.0310/28/02 24.8 0.77 0.00 45.41% 114.9910/30/02 32.5 0.69 0.00 41.27% 117.5711/16/02 17.8 0.69 0.00 43.36% 108.3811/30/02 16.9 0.72 0.72 43.90% 113.0612/14/02 17.4 0.73 0.63 44.22% 113.7112/15/02 24.1 0.70 0.64 42.51% 105.1512/20/02 12.8 0.76 0.76 46.78% 105.4812/27/02 14.6 0.77 0.83 48.11% 114.8602/05/03 16.9 0.78 0.85 48.64% 109.4302/12/03 10.6 0.86 1.00 52.99% 113.8102/21/03 29.2 0.84 0.97 51.84% 109.0103/01/03 14.8 0.86 1.06 53.45% 103.7003/29/03 14.0 0.86 1.02 58.15% 106.6904/11/03 100.0 0.78 0.87 54.52% 100.0204/12/03 13.0 0.83 0.94 61.30% 101.3104/15/03 8.8 0.91 0.94 69.93% 99.9304/15/03 20.0 0.94 0.98 71.75% 98.2804/24/03 12.1 0.99 1.06 75.65% 96.5704/25/03 9.9 1.08 1.26 80.23% 97.0605/15/03 11.0 1.13 1.52 82.66% 98.66
20.8
QSE 6 Performance
0.00
0.50
1.00
1.50
2.00
2.50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 16.5 0.75 0.00 30.08% 0.0010/13/02 11.5 0.88 0.00 43.49% 0.0010/28/02 100.0 0.58 0.00 28.99% 0.0010/30/02 17.8 0.65 0.00 31.07% 0.0011/16/02 12.1 0.73 0.00 36.18% 47.9611/30/02 18.4 0.73 0.73 36.61% 87.8112/14/02 100.0 0.62 0.60 45.66% 89.5512/15/02 100.0 0.55 0.43 52.45% 90.8612/20/02 6.1 0.76 0.85 58.93% 80.7612/27/02 0.68 0.71 63.04% 82.6902/05/03 24.9 0.68 0.63 60.17% 75.1702/12/03 22.4 0.68 0.62 57.64% 68.9102/21/03 23.5 0.68 0.74 55.42% 63.6103/01/03 100.0 0.63 0.74 58.60% 59.0603/29/03 6.4 0.73 0.69 62.06% 55.1204/11/03 68.3 0.69 0.72 58.79% 52.9904/12/03 100.0 0.63 0.62 55.37% 58.0204/15/03 82.8 0.63 0.52 52.90% 54.8004/15/03 7.8 0.73 0.79 53.41% 57.7804/24/03 100.0 0.66 0.80 50.89% 59.8904/25/03 7.2 0.77 0.82 52.83% 57.0405/15/03 14.9 0.87 1.05 54.44% 69.15
44.8
QSE 7 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 9.9 1.28 0.00 66.19% 75.4310/13/02 6.6 1.54 0.00 92.94% 89.9010/28/02 11.0 1.46 0.00 98.10% 97.3010/30/02 26.1 1.22 0.00 85.65% 98.4411/16/02 7.6 1.31 0.00 97.27% 107.2111/30/02 6.4 1.45 1.45 107.75% 120.1212/14/02 5.8 1.62 1.67 116.22% 126.9612/15/02 100.0 1.41 1.37 101.70% 112.6012/20/02 3.2 1.87 2.08 136.24% 115.6712/27/02 3.6 2.04 2.59 150.29% 104.2402/05/03 5.1 2.13 2.81 156.50% 106.5402/12/03 20.4 2.02 2.60 149.02% 106.0002/21/03 8.4 2.05 2.57 146.93% 108.5703/01/03 4.0 2.25 3.35 150.85% 107.9603/29/03 100.0 2.10 2.43 140.79% 107.4304/11/03 5.2 2.23 2.37 148.40% 115.8004/12/03 5.2 2.31 2.40 153.95% 135.1504/15/03 5.8 2.41 2.70 157.37% 147.2604/15/03 6.9 2.53 2.70 158.59% 147.9904/24/03 6.5 2.63 2.43 160.68% 145.5904/25/03 12.1 2.58 2.66 157.43% 146.3605/15/03 13.6 2.50 2.35 152.31% 141.43
17.0
QSE 8 Performance
0.00
1.00
2.00
3.00
4.00
5.00
6.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 6.7 2.28 0.00 1000.00% 0.0010/13/02 100.0 1.14 0.00 550.00% 50.0010/28/02 100.0 0.76 0.00 400.00% 41.6710/30/02 100.0 0.57 0.00 325.00% 56.2511/16/02 26.6 0.54 0.00 460.00% 45.0011/30/02 100.0 0.45 0.45 400.00% 54.1712/14/02 6.2 0.69 0.42 485.71% 60.7112/15/02 100.0 0.60 0.42 437.50% 65.6312/20/02 5.4 0.85 0.90 500.00% 69.4412/27/02 15.8 0.82 0.99 550.00% 72.5002/05/03 7.4 0.97 1.32 590.91% 65.9102/12/03 100.0 0.89 1.32 550.00% 68.7502/21/03 100.0 0.82 0.97 515.38% 71.1503/01/03 100.0 0.76 0.97 485.71% 73.2103/29/03 100.0 0.71 0.49 460.00% 75.0004/11/03 100.0 0.56 0.40 437.50% 70.3104/12/03 7.4 0.68 0.30 470.59% 72.0604/15/03 94.3 0.69 0.32 500.00% 73.6104/15/03 9.0 0.83 0.68 526.32% 75.0004/24/03 100.0 0.81 0.69 550.00% 71.2504/25/03 6.7 0.98 1.12 571.43% 67.8605/15/03 5.2 1.08 1.73 590.91% 64.77
58.7
QSE 9 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 9.2 1.51 0.00 83.54% 101.0610/13/02 7.5 2.04 0.00 117.42% 83.1610/28/02 11.0 1.88 0.00 114.94% 71.3310/30/02 6.8 2.03 0.00 127.94% 70.1611/16/02 4.7 2.22 0.00 152.12% 73.4111/30/02 11.2 2.07 2.07 144.50% 63.5912/14/02 11.4 1.96 2.03 138.93% 62.6212/15/02 19.4 1.81 1.73 129.30% 78.2012/20/02 4.0 2.01 2.07 147.78% 90.8712/27/02 8.0 1.98 1.94 147.64% 90.5602/05/03 16.8 1.88 1.60 140.98% 97.3402/12/03 22.1 1.79 1.52 133.80% 102.9102/21/03 5.9 1.89 1.81 138.80% 97.6803/01/03 7.0 1.91 2.04 141.07% 97.6203/29/03 3.7 2.39 2.96 152.83% 96.7104/11/03 14.1 2.37 2.88 148.57% 93.0604/12/03 10.4 2.30 2.99 146.64% 97.1204/15/03 8.2 2.32 3.17 146.51% 97.6104/15/03 5.2 2.38 3.20 180.08% 97.7204/24/03 6.3 2.36 3.30 180.50% 98.7404/25/03 4.8 2.53 2.40 183.66% 98.5105/15/03 6.0 2.66 2.75 183.91% 99.70
9.3
QSE 10 Performance
0.00
1.00
2.003.00
4.00
5.00
6.00
7.008.00
9.00
10.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 13.4 1.09 0.00 62.12% 146.7410/13/02 9.4 1.38 0.00 78.05% 105.4310/28/02 13.5 1.30 0.00 75.12% 111.0310/30/02 4.1 1.84 0.00 105.93% 106.8411/16/02 2.9 2.34 0.00 138.56% 93.9311/30/02 4.5 2.42 2.42 147.41% 90.1912/14/02 10.6 2.29 2.49 140.19% 77.3012/15/02 4.7 2.43 2.78 153.54% 81.0812/20/02 2.1 2.82 3.58 176.25% 83.6212/27/02 23.2 2.61 3.13 163.71% 86.0202/05/03 3.1 2.89 3.35 180.67% 78.2002/12/03 4.4 3.02 3.61 186.16% 79.6502/21/03 3.8 3.16 4.17 197.18% 80.2803/01/03 100.0 2.93 3.60 183.10% 74.5403/29/03 1.7 3.32 4.08 208.98% 79.1604/11/03 100.0 3.25 3.96 195.91% 74.2204/12/03 2.0 3.61 4.20 210.52% 76.8904/15/03 4.1 3.80 4.12 212.83% 78.9104/15/03 2.0 4.13 4.71 225.51% 79.3004/24/03 4.5 4.15 5.49 225.37% 78.1404/25/03 5.4 4.24 4.71 223.55% 79.0905/15/03 9.9 4.25 4.99 216.80% 79.19
15.0
QSE 11 Performance
0.00
1.00
2.00
3.00
4.00
5.006.00
7.00
8.00
9.00
10.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 22.8 0.57 0.00 25.14% 70.3510/13/02 15.2 0.88 0.00 34.05% 38.4210/28/02 37.2 0.70 0.00 28.62% 2715.2110/30/02 20.0 0.69 0.00 29.45% 2054.0111/16/02 9.5 0.82 0.00 37.57% 1989.3211/30/02 24.4 0.76 0.76 35.82% 1657.7712/14/02 25.5 0.71 0.74 34.45% 1420.9412/15/02 24.8 0.69 0.63 33.59% 1244.9212/20/02 53.3 0.64 0.61 31.30% 1107.7712/27/02 18.1 0.64 0.61 31.80% 1006.2302/05/03 24.1 0.63 0.47 31.30% 921.4702/12/03 66.2 0.60 0.44 29.56% 847.2002/21/03 40.8 0.58 0.42 28.54% 796.6503/01/03 24.2 0.58 0.42 28.38% 743.4703/29/03 21.4 0.58 0.49 28.53% 698.4404/11/03 73.4 0.55 0.41 27.31% 655.4004/12/03 22.6 0.51 0.42 27.47% 617.8804/15/03 15.0 0.55 0.54 28.41% 585.3904/15/03 17.5 0.56 0.60 28.87% 616.0504/24/03 100.0 0.47 0.51 27.43% 587.7204/25/03 40.1 0.47 0.49 26.91% 565.9205/15/03 100.0 0.44 0.46 25.69% 540.20
36.2
QSE 12 Performance
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 4.2 2.84 0.00 81.09% 100.0010/13/02 17.7 2.40 0.00 66.28% 81.8310/28/02 18.6 1.97 0.00 77.65% 54.5610/30/02 8.2 2.21 0.00 123.26% 56.8511/16/02 11.8 2.35 0.00 126.17% 49.9311/30/02 7.0 2.55 2.55 140.47% 52.2912/14/02 8.7 2.62 2.59 141.98% 54.9812/15/02 8.8 2.68 2.78 143.06% 60.0912/20/02 6.7 2.73 3.10 155.05% 53.4112/27/02 12.9 2.63 2.91 144.90% 62.8102/05/03 9.6 2.58 2.77 140.37% 67.2702/12/03 9.9 2.54 2.53 147.12% 69.9902/21/03 7.6 2.57 2.50 160.03% 68.8203/01/03 4.7 2.64 2.58 160.96% 69.6103/29/03 4.5 2.78 2.85 166.29% 64.9704/11/03 25.3 2.63 2.66 158.78% 67.1604/12/03 28.7 2.53 2.39 151.85% 104.8604/15/03 100.0 2.45 2.05 143.41% 99.0304/15/03 100.0 2.26 1.56 135.86% 99.0804/24/03 9.3 2.21 1.32 141.86% 101.8604/25/03 11.6 2.09 0.82 145.24% 97.0105/15/03 100.0 1.88 0.73 138.63% 92.60
23.4
QSE 13 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 14.4 1.10 0.00 111.09% 46.6410/13/02 26.2 0.78 0.00 87.53% 23.7010/28/02 22.7 0.73 0.00 74.98% 30.6610/30/02 13.2 0.84 0.00 80.21% 33.7611/16/02 10.1 0.93 0.00 88.05% 32.5911/30/02 12.3 0.96 0.96 91.89% 27.2412/14/02 42.7 0.87 0.83 83.19% 30.1212/15/02 13.5 0.89 0.93 84.82% 33.0712/20/02 10.3 0.93 1.03 88.25% 38.4512/27/02 16.0 0.91 0.96 88.81% 42.1102/05/03 16.5 0.92 0.91 90.29% 38.2802/12/03 19.7 0.90 0.84 88.57% 42.3602/21/03 16.6 0.91 0.95 87.78% 40.3203/01/03 7.3 0.98 1.10 94.87% 40.0103/29/03 15.5 0.97 1.03 93.43% 39.1004/11/03 13.9 0.97 1.08 94.19% 45.1204/12/03 8.8 1.06 1.22 97.98% 46.2904/15/03 13.0 1.09 1.28 99.09% 47.2204/15/03 10.2 1.11 1.38 101.30% 49.8304/24/03 25.1 1.07 1.17 98.89% 50.7004/25/03 11.5 1.09 1.27 99.23% 52.5905/15/03 18.8 1.13 1.24 98.31% 53.00
16.3
QSE 14 Performance
0.00
0.50
1.00
1.50
2.00
2.50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 51.2 0.23 0.00 46.65% 0.0010/13/02 57.7 0.20 0.00 45.92% 51.1410/28/02 70.8 0.19 0.00 43.03% 34.0910/30/02 100.0 0.14 0.00 32.27% 25.5711/16/02 30.3 0.17 0.00 38.90% 40.4611/30/02 100.0 0.14 0.14 32.42% 33.7112/14/02 100.0 0.12 0.10 27.79% 28.9012/15/02 100.0 0.11 0.08 24.31% 25.2912/20/02 100.0 0.10 0.05 21.70% 22.4812/27/02 100.0 0.09 0.05 19.53% 30.2302/05/03 21.0 0.13 0.10 47.02% 49.6102/12/03 30.8 0.16 0.17 60.52% 45.4802/21/03 17.1 0.21 0.32 86.66% 44.8403/01/03 41.4 0.22 0.36 92.07% 48.7803/29/03 21.6 0.23 0.44 152.59% 52.2004/11/03 100.0 0.22 0.44 149.31% 48.9304/12/03 46.8 0.23 0.39 199.35% 51.9404/15/03 26.1 0.25 0.39 243.83% 49.0504/15/03 46.7 0.26 0.30 283.63% 2181.0404/24/03 30.8 0.28 0.33 319.45% 2071.9904/25/03 52.6 0.29 0.29 351.85% 1973.3205/15/03 13.7 0.35 0.43 381.31% 1889.00
57.2
QSE 15 Performance
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 100.0 0.00 0.00 0.00% 92.0910/13/02 100.0 0.00 0.00 0.00% 68.0410/28/02 64.2 0.07 0.00 4.77% 58.5110/30/02 14.1 0.31 0.00 17.54% 59.5211/16/02 30.0 0.33 0.00 20.19% 64.3411/30/02 16.6 0.39 0.39 28.14% 78.4912/14/02 100.0 0.33 0.39 24.12% 69.1712/15/02 14.5 0.40 0.54 27.91% 71.3512/20/02 10.0 0.49 0.70 32.96% 69.4012/27/02 26.7 0.49 0.61 32.42% 62.4602/05/03 15.6 0.53 0.70 33.07% 59.5202/12/03 35.9 0.52 0.65 32.06% 77.9402/21/03 18.5 0.54 0.79 33.03% 73.8303/01/03 14.4 0.57 0.79 34.07% 69.4603/29/03 8.9 0.68 0.97 35.66% 71.5004/11/03 4.4 1.03 1.77 40.82% 74.3304/12/03 3.5 1.34 2.39 47.14% 72.4604/15/03 3.6 1.71 3.28 53.56% 69.3904/15/03 2.7 2.16 4.42 59.82% 71.0004/24/03 29.2 2.16 4.36 59.11% 67.9704/25/03 36.1 2.14 4.04 58.06% 67.5605/15/03 40.1 2.16 3.21 56.91% 64.49
31.3
QSE 16 Performance
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 17.7 0.69 0.00 419.85% 0.0010/13/02 8.5 1.16 0.00 922.77% 417.1410/28/02 3.6 2.08 0.00 1454.00% 1965.3110/30/02 12.0 1.84 0.00 1292.67% 1950.1811/16/02 1.1 3.56 0.00 2393.54% 1580.1411/30/02 1.8 4.00 4.00 3131.43% 1579.4512/14/02 2.8 4.16 4.74 3284.74% 1368.1012/15/02 5.0 3.87 4.77 3169.51% 1209.5912/20/02 2.4 3.99 4.95 3243.11% 1248.1512/27/02 4.4 3.84 5.17 3168.79% 1133.3402/05/03 11.9 3.59 3.62 2971.63% 1039.4002/12/03 16.0 3.38 2.76 2807.33% 952.7802/21/03 100.0 3.12 1.91 2599.07% 887.1803/01/03 0.6 4.25 4.76 2484.85% 830.9603/29/03 16.7 4.01 4.03 2385.86% 782.2304/11/03 11.3 4.04 3.83 2299.25% 1046.4404/12/03 100.0 3.94 3.64 2169.88% 990.7704/15/03 100.0 3.67 3.47 2054.89% 941.2804/15/03 5.8 3.77 3.89 1999.37% 891.7404/24/03 100.0 3.07 0.73 1904.40% 850.6204/25/03 100.0 2.66 0.63 1818.47% 817.0805/15/03 100.0 2.32 0.43 1740.36% 784.49
32.8
QSE 17 Performance
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
20.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
Average AverageINCREM PU of PU of QSE PercentDROOP RATED RATED BIAS of
AT AT AT Setting ObligationPT B PT B PT B Average Change
% All Dates Last 6 Error Average
09/06/02 15.0 0.98 0.00 60.99% 32.3510/13/02 51.8 0.62 0.00 39.63% 44.7910/28/02 13.7 0.78 0.00 49.14% 62.3110/30/02 5.2 1.27 0.00 80.15% 71.1111/16/02 10.2 1.28 0.00 82.52% 75.7811/30/02 17.4 1.19 1.19 78.42% 77.2012/14/02 23.5 1.10 1.11 74.11% 74.4812/15/02 13.0 1.08 1.24 75.13% 72.5112/20/02 14.6 1.07 1.21 75.00% 73.6812/27/02 12.5 1.08 0.95 76.32% 69.7302/05/03 19.8 1.06 0.88 74.77% 80.3602/12/03 10.7 1.10 1.01 76.41% 81.8702/21/03 11.9 1.14 1.18 77.29% 80.4603/01/03 9.7 1.17 1.28 80.53% 79.0503/29/03 6.4 1.24 1.50 84.94% 81.6504/11/03 17.7 1.23 1.45 82.75% 80.5104/12/03 6.7 1.36 1.66 86.55% 79.4904/15/03 9.6 1.38 1.66 86.87% 78.4104/15/03 6.3 1.38 1.85 90.75% 79.4604/24/03 18.8 1.36 1.74 89.15% 78.3204/25/03 37.1 1.34 1.43 86.33% 78.1905/15/03 17.6 1.35 1.41 84.87% 87.08
15.9
QSE 18 Performance
0.00
0.50
1.00
1.50
2.00
2.50
3.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
PU of RATED All Dates
-3000
-2700
-2400
-2100
-1800
-1500
-1200
-900
-600
-300
0
300
600
900
1200
1500
2:37:00 2:42:00 2:47:00 2:52:00 2:57:00 3:02:00 3:07:00 3:12:00 3:17:00 3:22:00 3:27:00 3:32:00 3:37:00
59.20
59.27
59.33
59.40
59.47
59.53
59.60
59.67
59.73
59.80
59.87
59.93
60.00
60.07
60.13
60.20
REG RESP HZ
5/15/03TXU MLSES Unit 1, CPSES Units 1 & 2, DCSES Unit 1, DYN LGE Unit 1, COR TGCCS
Unit 1
FREQUENCY & SCE ERCOT3434.23205
4
May 15, 2003 Event
24500
24675
24850
25025
25200
25375
25550
25725
25900
26075
26250
26425
26600
26775
26950
27125
27300
27475
27650
27825
28000
05/15/03 02:52:46 05/15/03 02:56:46 05/15/03 03:00:46
59.2
59.3
59.4
59.5
59.6
59.7
59.8
59.9
60
60.1
60.2
Hz
Total Generation less CPK
Total Generation
QSE telemetered Total Generation
Generation Lost 3947 MW
Firm Load Shed 1550 MWLaaR's Tripped 650 MWTotal Load Lost 2200 MW
Measured Turbine Governor Response at Point B (first event) 1769 MWTurbine Droop % 16.1 %
374.8 MW/0.1hz
AGC Response to Restore Frequency to Predisturbance Level 1804 MW158.7 MW/min (average)
Frequency Recovery Time 11.37 Minutes
Measured Turbine Governor Response at Point B (second event) 186.5 MW
Event Summary
Notes• Four QSE’s had data/telemetry problems
before/during event– Data Quality flags did not work on one QSE’s data
• ERCOT Regulation deployment was minimal due to large QSE SCE feedback and large Responsive Reserve deployment.
• TXU placed on Constant Frequency control.• Some turbines had more governor response for the
second event.
AVR Performance Measure
• PDCWG members had concerns about data update times adequate to do an analysis– Faults last only cycles and data from QSEs is either 2 second
or 10 second.– Voltage Regulator response will be limited to physical
location/bus voltage connection and proximity to fault. Difficult to determine who/which generators should have responded.
• AVR mode of operation may be determined by trending MVAR output of generators and observing changes in output (MVAR) as voltage is adjusted on neighboring generators.
Operations Report Changes• PDCWG recommended changes to ERCOT
Operations report as requested.– The time frequency was at 60.00 Hz prior to the
excursion was added, along with Load and Total Regulation deployed.
• How long it took to reach the max/min frequency can be determined as well as how much load change occurred and Regulation Services were deployed as frequency deviated from schedule.
– The Event “Cause” includes total Schedule change as well as the largest single QSE schedule change where appropriate.
• A Picture speaks a 1000 words, one member suggested a graph of each event.
PDCWG Meeting June 25, 2003
• QSE Performance measure, SCPS1 and SCPS2 was reviewed.– ERCOT epsilon 10 was updated to correlate to the
epsilon 1 change. The value changed from 0.0073 Hz to 0.01315 Hz effective July 1, 2003.
• This change will increase the L10 value for the QSE SCPS2 measure and should make the standard more equivalent to the multiple control area CPS2 measure prior to single control area operation.
– The SCPS2 measurement was thought to be important for QSE ramping performance.
Meeting continued
• QSE Ramp Rates are being exceeded when deployments are for correcting congestion.
• A request was made of ERCOT to recalculate May’s CPS1 score, but eliminate the periods when VDI’s were issued. This may correlate the low CPS1 score to the frequent Dispatch Instructions.