The network impedance matrix ( \(\left[\mathrm{Z}_{\mathrm{Bus}}ight]\) ) and the result of load flow simulation problem are presented in the following. If a capacitor with the reactance of \(3.4 p . u\). is connected to the fourth bus, determine its updated voltage:

\[
\left[\mathrm{Z}_{\text {Bus }}ight]=j\left[\begin{array}{llll}
0.20 & 0.15 & 0.25 & 0.24 \\
0.15 & 0.30 & 0.13 & 0.14 \\
0.25 & 0.13 & 0.15 & 0.25 \\
0.24 & 0.14 & 0.25 & 0.40
\end{array}ight] p . u .
\]

1) 0.95 p.u.
2) 0.98 p.и.
3) 1.02 p.u.
4) 1.20 p.и.

Transcribed Image Text:

Bus 1 V (p. u.) 1.02/0 2 0.98 -15 3 1.05/10 4 0.9/0