Question

I need help with this question please 6.2 (a,b,c,d)

6.2. A 100-mi, single circuit, three-phase transmission line delivers 55 MVA at 0.8 power factor lagging to the load at 132 kV (line to line). The line is composed of Drake conductors with flat horizontal spacing of 11.9 ft between adjacent conduce tors. Assume a wire tcmperature of SC. Determine (a) The series impedance and the shunt admittance of the line (b) The ABCD constants of the linc. (c) The sending-end voltage, current, real and reactive powers, and the power factor (d) The percent regulation of the line.

Answer 1

Considering length of the transmission line in Kilometers. The lenth of Transmission in 100 mi.

1 Mile = 1.60 KM.

100 Miles = 160 KM. Therefore the length of the transmission line is (l) = 160 KM.

Given Data:

Apparent Power delivered by the Transmissioin line (S) = 55 MVA.

Load Power Factor = 0.8 Lagging.

Load votage or Receiving end line to line terminal voltage (VR) = 132 KV.

The three lines are having only Single conductors and are arranged in the Horizontal fashion with a spacing of 11.9ft.

but 1ft = 0.3048 meters(m)

11.9ft = 3.63m.

wire temperature is assumed to be 50

Let us assume that radius of each conductor (r) = 1m.

and also assume that resistivity of the conductor be 1 -m.