Question

Consider a 250km, 330kV, 50HZ, 3-phase transmission line with horizontal conductor geometry with spacing of 6m between phases using two bundled conductors with a spacing between conductors in the bundle of 0.24m. Assume the line is uniformly transposed and the conductors have a radius of 1.24cm (0.041ft). Note: 1m=3.28ft Calculate: i. The inductance per km and total reactance of the overhead line when the conductors are regularly transposed. [5Marks] ii. The capacitance per mile and total capacitive reactance per phase for the overhead line when the conductors are regularly transposed. [5Marks] iii. The DC and AC resistance of the bundled conductor per phase at room temperature of 20°C and at 40°C if the conductors are made of solid cylindrical aluminium: ?=2.83??cm, and ?=0.0039°C?¹ at 20°C (RAC=1.02 RDC) [5Marks]

          Consider a 250km, 330kV, 50HZ, 3-phase transmission line with horizontal conductor
geometry with spacing of 6m between phases using two bundled conductors with a
spacing between conductors in the bundle of 0.24m. Assume the line is uniformly
transposed and the conductors have a radius of 1.24cm (0.041ft). Note: 1m=3.28ft
Calculate:
i. The inductance per km and total reactance of the overhead line when the
conductors are regularly transposed.
[5Marks]
ii. The capacitance per mile and total capacitive reactance per phase for the
overhead line when the conductors are regularly transposed.
[5Marks]
iii. The DC and AC resistance of the bundled conductor per phase at room
temperature of 20°C and at 40°C if the conductors are made of solid cylindrical
aluminium: ?=2.83??cm, and ?=0.0039°C?¹ at 20°C (RAC=1.02 RDC)
[5Marks]

Consider a 250km, 330kV, 50HZ, 3-phase transmission line with horizontal conductor
geometry with spacing of 6m between phases using two bundled conductors with a
spacing between conductors in the bundle of 0.24m. Assume the line is uniformly
transposed and the conductors have a radius of 1.24cm (0.041ft). Note: 1m=3.28ft
Calculate:
i. The inductance per km and total reactance of the overhead line when the
conductors are regularly transposed.
[5Marks]
ii. The capacitance per mile and total capacitive reactance per phase for the
overhead line when the conductors are regularly transposed.
[5Marks]
iii. The DC and AC resistance of the bundled conductor per phase at room
temperature of 20°C and at 40°C if the conductors are made of solid cylindrical
aluminium: ?=2.83??cm, and ?=0.0039°C?¹ at 20°C (RAC=1.02 RDC)
[5Marks]

Added by Jeffrey B.

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