The ABCD constants of a three-phase, 345-kV transmission line are
A = D = 0:98182 + j0:0012447
B = 4:035 + j58:947
C = j0:00061137
The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine the sending end quantities, voltage regulation, and transmission efficiency.