4.8. A three-phase transposed line is composed of one ACSR 159,000 cmil, 54/19 Lapwing conductor per phase with flat horizontal spacing of 8 meters as shown in Figure 37. The GMR of each conductor is 1.515 cm. (a) Determine the inductance per phase per kilometer of the line. (b) This line is to be replaced by a two-conductor bundle with 8-m spacing mea- sured from the center of the bundles as shown in Figure 38. The spacing between the conductors in the bundle is 40 cm. If the line inductance per phase is to be 77 percent of the inductance in part (a), what would be the GM R of each new conductor in the bundle? - D12 = 8 m D23 = 8 m -D13 = 16 m- %3D FIGURE 37 Conductor layout for Problem 4.8 (a).

4.8. A three-phase transposed line is composed of one ACSR 159,000 cmil, 54/19 Lapwing conductor per phase with flat horizontal spacing of 8 meters as shown in Figure 37. The GMR of each conductor is 1.515 cm. (a) Determine the inductance per phase per kilometer of the line. (b) This line is to be replaced by a two-conductor bundle with 8-m spacing mea- sured from the center of the bundles as shown in Figure 38. The spacing between the conductors in the bundle is 40 cm. If the line inductance per phase is to be 77 percent of the inductance in part (a), what would be the GM R of each new conductor in the bundle? - D12 = 8 m D23 = 8 m -D13 = 16 m- %3D FIGURE 37 Conductor layout for Problem 4.8 (a).

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.18P: A 230-kV, 60-Hz, three-phase completely transposed overhead line has one ACSR 954 kcmil conductor...

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

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4.8. A three-phase transposed line is composed of one ACSR 159,000 cmil, 54/19
Lapwing conductor per phase with flat horizontal spacing of 8 meters as shown in
Figure 37. The GMR of each conductor is 1.515 cm.
(a) Determine the inductance per phase per kilometer of the line.
(b) This line is to be replaced by a two-conductor bundle with 8-m spacing mea-
sured from the center of the bundles as shown in Figure 38. The spacing between
the conductors in the bundle is 40 cm. If the line inductance per phase is to be
77 percent of the inductance in part (a), what would be the GM R of each new
conductor in the bundle?
a
D12 = 8 m
D23 = 8 m
%3D
%3D
-D13 = 16 m-
FIGURE 37
Conductor layout for Problem 4.8 (a).

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