Q: 6 A three-phase transposed line is composed of one ACSR, 1.431, 000-cmil, 45/7 Bobolink conductor per phase with flat horizontal spacing of 11 m as shown in Fig. 1. The conductors have a diameter of 3.625 cm and a GMR of 1.439 cm. The line is to be replaced by a three-conductor bundle of ACSR, 477,000-cmil, 26/7 Hawk conductors having the same cross-sectional area of aluminium as the single-conductor line. The conductors have a diameter of 2.1793 cm and a GMR of 0.8839 cm. The new line will also have a flat horizontal configuration, but it is to be operated at a higher voltage and therefore the phase spacing is increased to 14 m as measured from the centre of the bundles as shown in Fig.2. The spacing between the conductors in the bundle is 45 cm. Determine the percentage change in the inductance. - D, =1 lm - D = 11m D = 22m (1) D, =14m -D, = 14m -D = 28m- (2)
Q: 6 A three-phase transposed line is composed of one ACSR, 1.431, 000-cmil, 45/7 Bobolink conductor per phase with flat horizontal spacing of 11 m as shown in Fig. 1. The conductors have a diameter of 3.625 cm and a GMR of 1.439 cm. The line is to be replaced by a three-conductor bundle of ACSR, 477,000-cmil, 26/7 Hawk conductors having the same cross-sectional area of aluminium as the single-conductor line. The conductors have a diameter of 2.1793 cm and a GMR of 0.8839 cm. The new line will also have a flat horizontal configuration, but it is to be operated at a higher voltage and therefore the phase spacing is increased to 14 m as measured from the centre of the bundles as shown in Fig.2. The spacing between the conductors in the bundle is 45 cm. Determine the percentage change in the inductance. - D, =1 lm - D = 11m D = 22m (1) D, =14m -D, = 14m -D = 28m- (2)
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Transcribed Image Text:Q: 6 A three-phase transposed line is composed of one ACSR, 1.431, 000-cmil, 45/7 Bobolink
conductor per phase with flat horizontal spacing of 11 m as shown in Fig. 1. The conductors have
a diameter of 3.625 cm and a GMR of 1.439 cm. The line is to be replaced by a three-conductor
bundle of ACSR, 477,000-cmil, 26/7 Hawk conductors having the same cross-sectional area of
aluminium as the single-conductor line. The conductors have a diameter of 2.1793 cm and a GMR
of 0.8839 cm. The new line will also have a flat horizontal configuration, but it is to be operated
at a higher voltage and therefore the phase spacing is increased to 14 m as measured from the
centre of the bundles as shown in Fig.2. The spacing between the conductors in the bundle is 45
cm. Determine the percentage change in the inductance.
D, =11m
D3 =1 1m
D3 = 22m
(1)
D, =14m
D = 14m
D, = 28m
(2)
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