Characteristics of Measurement of Criterion Values and Adaptive - Digital Signal Processing in Power System Protection and Control - page 186

Fig. 9.10 Spectra of the
measurement algorithms
without time delay: a U ( 8.37 ),
b P ( 8.47a , b ), c Q ( 8.48 )

(a) 1.2

1

0.8

0.6

0.4

0.2

0

01 2 3 4 5 678910
f/f 1

(b)

1.2

1

0.8

0.6

0.4

0.2

0

-0.2

012 3456789 0
f/f 1

(c)

1.2

1

0.8

0.6

0.4

0.2

0

-0.2

01 2 34 5 678 9 0
f/f 1