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(d) What is the difference between the parametrs of overhead line and underground cables?

(d) What is the difference between the parametrs of overhead line and underground cables?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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C and D only Some time ago they solved A and B
A 3-phase, transmission line is to be built using Falcon ACSR conductor with a manugfacture data given in the attached table. Bundeling is to be used, with three conductors per phase spaced symetrically 30cm apart and a horizontal tower configuration is used, with a distance of 5m between adjacent phases as shown below. 30cm -5m -5m Assuming that the line is uniformly transposed. (a) Determine the transmission line inductance per phase in H/km. (b) Determine the transmission line capacitance per phase in F/km (c) What is the thermal rating (maximum current carrying capcity) of this transmission line? (d) What is the difference between the parametrs of overhead line and underground cables? Given: µ0=4x10-7 H/m, ɛ0=8.854x10-12 F/m, 1 mile=1.607km, 1 meter=3.28 feet, 1 feet=12 inches
Transcribed Image Text:A 3-phase, transmission line is to be built using Falcon ACSR conductor with a manugfacture data given in the attached table. Bundeling is to be used, with three conductors per phase spaced symetrically 30cm apart and a horizontal tower configuration is used, with a distance of 5m between adjacent phases as shown below. 30cm -5m -5m Assuming that the line is uniformly transposed. (a) Determine the transmission line inductance per phase in H/km. (b) Determine the transmission line capacitance per phase in F/km (c) What is the thermal rating (maximum current carrying capcity) of this transmission line? (d) What is the difference between the parametrs of overhead line and underground cables? Given: µ0=4x10-7 H/m, ɛ0=8.854x10-12 F/m, 1 mile=1.607km, 1 meter=3.28 feet, 1 feet=12 inches
Step2 b) Per phase inductance of the line, Lph = 2 × 10-7 ln ( GMD GMR Lph = 2 × 10−7 In Lph = 5.45 × 10−7 H/m Lph = 5.45 × 10¯4 H/km per phase capacitance of the line Cn = In 2π €0 = GMD GMR GMR, D₂ = √r•d² [r= 1 m d = 0.3 m] 3 Dε = √√1 × 0. 3² = 0. 448 S 6.299 0.4123 GMD = Deg = √√/Daß · Dâc · Dac AB eq Deg 3/5 × 5 × 10 = 6.299 Cn 2πx8.854×10 6.299 0.448 In -12 = DAB 21.04 × 10-⁹ F/km - 5m DB -
Transcribed Image Text:Step2 b) Per phase inductance of the line, Lph = 2 × 10-7 ln ( GMD GMR Lph = 2 × 10−7 In Lph = 5.45 × 10−7 H/m Lph = 5.45 × 10¯4 H/km per phase capacitance of the line Cn = In 2π €0 = GMD GMR GMR, D₂ = √r•d² [r= 1 m d = 0.3 m] 3 Dε = √√1 × 0. 3² = 0. 448 S 6.299 0.4123 GMD = Deg = √√/Daß · Dâc · Dac AB eq Deg 3/5 × 5 × 10 = 6.299 Cn 2πx8.854×10 6.299 0.448 In -12 = DAB 21.04 × 10-⁹ F/km - 5m DB -
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