Table 9 Performance of the interval estimates for the IEEE 14-bus system parameters in the presence of a single bad value (n = 68)
From: The computation of confidence intervals for the state parameters of power systems
Estimated parameters | True values | Average LCL | Average UCL | Coverage Prob (%) |
|---|---|---|---|---|
θ 02 | −04.98 | −06.00 | −04.53 | 93.48 |
θ 03 | −12.72 | −14.07 | −12.40 | 84.24 |
θ 04 | −10.33 | −11.70 | −10.02 | 82.08 |
θ 05 | −08.78 | −10.13 | −08.62 | 72.62 |
θ 06 | −14.22 | −15.86 | −13.98 | 71.46 |
θ 07 | −13.37 | −14.93 | −13.03 | 72.92 |
θ 08 | −13.36 | −15.08 | −12.90 | 89.54 |
θ 09 | −14.94 | −16.55 | −14.60 | 84.48 |
θ 10 | −15.10 | −16.98 | −14.53 | 91.58 |
θ 11 | −14.79 | −16.77 | −14.16 | 92.24 |
θ 12 | −15.07 | −17.36 | −14.17 | 95.14 |
θ 13 | −15.16 | −17.24 | −14.44 | 93.76 |
θ 14 | −16.04 | −18.17 | −15.26 | 94.02 |
V 01 | 243.80 | 237.11 | 249.54 | 99.16 |
V 02 | 240.35 | 233.53 | 245.50 | 98.64 |
V 03 | 232.30 | 226.27 | 238.08 | 97.68 |
V 04 | 234.14 | 228.30 | 240.20 | 98.62 |
V 05 | 234.60 | 230.01 | 241.28 | 98.12 |
V 06 | 246.10 | 240.84 | 251.87 | 97.60 |
V 07 | 244.26 | 237.96 | 250.38 | 98.64 |
V 08 | 250.70 | 244.48 | 256.95 | 98.82 |
V 09 | 242.88 | 236.90 | 248.53 | 98.70 |
V 10 | 241.73 | 235.50 | 247.94 | 98.74 |
V 11 | 243.11 | 236.85 | 249.31 | 98.74 |
V 12 | 242.65 | 237.98 | 248.30 | 98.74 |
V 13 | 241.50 | 235.80 | 247.23 | 98.75 |
V 14 | 238.28 | 232.00 | 244.46 | 98.78 |