Characteristics of Measurement of Criterion Values and Adaptive - Digital Signal Processing in Power System Protection and Control - page 188

Fig. 9.11 Spectra of the
measurement algorithms with
time delay (k = N 1 /4): a U
( 8.41 ), b P ( 8.49 ), c Q ( 8.50 )

(a)

1 .2

1

0 .8

0 .6

0 .4

0 .2

0

0123456789 0
f/f 1

(b)

1.2

1

0.8

0.6

0.4

0.2

0

-0.2

01 2 34 5 678 9 0
f/f 1

(c)

1.2

1

0.8

0.6

0.4

0.2

0

-0.2

0123456789 0
f/f 1