Question: In a three-bus power system shown in Fig. 7.6, determine the sum of the diagonal components of the network admittance matrix ( (left[mathrm{Y}_{text {Bus }}ight])

In a three-bus power system shown in Fig. 7.6, determine the sum of the diagonal components of the network admittance matrix ( $\left[\mathrm{Y}_{\text {Bus }}ight]$ ).

1) $-j 60$ p. и.

2) $-j 20 p . u$.

3) $-j 30 p . u$.

4) $-j 10 p . u$.

j0.1 p.u. j0.1 p.u. 3 10.1 p.u.

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