11. A single-phase line operating at 60 Hz consists of two 4/0 12-strand copper conductors with 5 ft spacing between conductor centers. The line length is 20 miles. The line voltage is 20 kV. The following data are obtained from the tables for this conductor: Diameter of Individual Strands = 0.1328 %3D inches • Outside diameter 0.552 inches Geometric Mean Radius (G.M.R. at 60 Hz) = 0.01750 feet. Determine the total inductance in H. Note: 1 foot = 12 inches; and 1 mile = 1609 m. £0 = 8.85 x 10-12 F/m * %3D 0.2388 H 0.2854 H 0.2954 H 0.2287 H

11. A single-phase line operating at 60 Hz consists of two 4/0 12-strand copper conductors with 5 ft spacing between conductor centers. The line length is 20 miles. The line voltage is 20 kV. The following data are obtained from the tables for this conductor: Diameter of Individual Strands = 0.1328 %3D inches • Outside diameter 0.552 inches Geometric Mean Radius (G.M.R. at 60 Hz) = 0.01750 feet. Determine the total inductance in H. Note: 1 foot = 12 inches; and 1 mile = 1609 m. £0 = 8.85 x 10-12 F/m * %3D 0.2388 H 0.2854 H 0.2954 H 0.2287 H

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 4.47P

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Similar questions

A 60-Hz, single-phase two-wire overhead line has solid cylindrical copper conductors with a 1.5 cm diameter. The conductors are arranged in a horizontal configuration with 0.5 m spacing. Calculate in mH/km (a) the inductance of each conductor due to internal flux linkages only, (b) the inductance of each conductor due to both internal and external flux linkages, and (c) the total inductance of the line.
A 60-Hz, three-phase three-wire overhead line has solid cylindrical conductors arranged in the form of an equilateral triangle with 4-ft conductor spacing. The conductor diameter is 0.5 in. Calculate the positive-sequence inductance in Wm and the positive-sequence inductive reactance in /km.
For a three-phase three-wire line consisting of three solid cylindrical conductors each with radius r and with equal phase spacing D between any two conductors, the inductance in H/m per phase is given by 2107ln(Dr)4107ln(Dr)6107ln(Dr) where r=e14r=0.778r
For a single-phase, two-wire line consisting of two solid cylindrical conductors of same radius, r, the total circuit inductance, also called loop inductance, is given by (in H/m) 2107ln(Dr) 4107ln(Dr) where r=e14r=0.778r
A 60-Hz, 765-kV, three-phase overhead transmission line has four ACSR 900 kcmil 54/3 conductors per phase. Determine the 60 Hz resistance of this line in ohms per kilometer per phase at 50C.
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A 230-kV, 60-Hz, three-phase completely transposed overhead line has one ACSR 954 kcmil conductor per phase and flat horizontal phase spacing, with 7 m between adjacent conductors Determine the inductance in H/m and the inductive reactance in /km.