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Table 4 Performance of the interval estimates for the 6-bus system parameters (n = 28)

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

−3.70

−3.91

−3.42

94.76

θ 03

−4.30

−4.68

−3.85

94.94

θ 04

−4.20

−4.43

−3.95

94.76

θ 05

−5.30

−5.58

−4.96

95.00

θ 06

−5.90

−6.36

−5.52

95.06

V 01

241.50

239.67

243.39

95.08

V 02

241.50

239.82

243.22

94.70

V 03

246.10

244.07

248.14

95.02

V 04

227.60

225.65

228.56

94.76

V 05

226.70

224.56

228.80

95.12

V 06

231.00

229.13

232.98

94.96