7.22 For the network shown in Figure 7.17, impedances labeled 1 through 6 are in per-unit.

(a) Determine Ybus. Preserve all buses. (b) Using MATLAB or a similar computer

program, invert Ybus to obtain Zbus-

SURE 7.17

oblem 7.22

mom

oooo

j0.25

(2)

11.25

(1)

(4

j0.125

(6)

oooo

2

O

j0.2

(5)

moor

oooo

j0.4

(3)

Reference

moo

/1.25

(4)

WA