(Solved): Fig. 1 shows the horizontal conductor configuration of a completely transposed 50Hz,345kV three- ...

Fig. 1 shows the horizontal conductor configuration of a completely transposed $50-\mathrm{Hz},345\mathrm{kV}$ three-phase overhead transmission line with bundled phase conductors. All conductors have a radius of $0.74\mathrm{cm}$ with a $30-\mathrm{cm}$ bundle spacing and each phase has two conductors per bundle. Fig.1: Question 1 a) Determine the inductance and capacitance per phase per kilometre of the line [5 Marks] b) If the $\mathrm{ABCD}$ constants of the line are: $\begin{array}{l}A=D=0.98182+j0.0012447\\ B=4.035+j58.947\\ C=j0.00061137\end{array}$ and the line delivers 400 MVA at 0.8 lagging power factor at $345\mathrm{kV}$. Determine: i. The sending end voltage, current and real power ii. Voltage regulation and [6 Marks] iii. Transmission efficiency [2 Marks] [2 Marks]