The towers of height 45 m and 85 m respectively support a transmission line conductor at water crossing. The horizontal distance between the towers is 550m. If the tension in the conductor is 1550 kg, Weight of conductor is 1.65 ky/m. Bases of the towers can be considered to be at water level. Estimate: i) distance between lowest point on conductor and each tower ii) sag at each tower iii) the minimum clearance between ground and conductor

The towers of height 45 m and 85 m respectively support a transmission line conductor at water crossing. The horizontal distance between the towers is 550m. If the tension in the conductor is 1550 kg, Weight of conductor is 1.65 ky/m. Bases of the towers can be considered to be at water level. Estimate: i) distance between lowest point on conductor and each tower ii) sag at each tower iii) the minimum clearance between ground and conductor

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 4.20MCQ

See similar textbooks

Similar questions

A stranded conductor is an example of a composite conductor. True False
Alumoweld is an aluminum-clad steel conductor. True False
The towers of height 45 m and 85 m respectively support a transmission line conductor at water crossing. The horizontal distance between the towers is 550m. If the tension in the conductor is 1550 kg, Weight of conductor is 1·65 kg/m. Bases of the towers can be considered to be at water level. Estimate: i. distance between lowest point on conductor and each tower ii. sag at each tower iii. the minimum clearance between ground and conductor
(a) A three phase transposed transmission tower comprises of three-bundled conductor and double-circuit configured in vertical position as shown in Figure 2. Each sub-conductor in each circuit and each phase is an ACSR type, size 477,000 cmil and stranding 26/7. Given the GMR of each sub-conductor is 0.8809 cm and diameter is 2.1793 cm, analyze: i. Inductance in mH/km ii. Capacitance in µF/km 0.75m 7.5m b' 4m 4m 45cm Figure 2
An overhead line has span of 260m. The tension in the line is 1200kg while the conductor weighs 650 kg per 100 meters. Calculate the maximum SAG in the conductor. If the height of the tower is 13 meters, estimate the clearance of conductor to the ground. Draw a figure and mark values of sag, clearance, span, height of conductor etc.
A 60 Hz, three-phase, transposed transmission line, is designed with three bobolink conductors per phase, in horizontal arrangement as shown in the figure below. Distance between consecutive phases is D = 6.2 m and distance among bundle conductors is h =0.5m. Each conductor has a radius of 18 mm and a GMR of 14.39mm. The per phase resistance is 1.677x10-5 2/m. r= 18 mm GMR= 14.39 mm a b h D D The per phase shunt admittance assuming zero conductance in µO/km is: О a., 5.4347 O b. j5.3316 О с /4.2266 O d. j4.0973 O e. 59630.2922 + j10.9770
Problem #1 • An overhead line has span of 260m. The tension in the line is 1200kg while the conductor weighs 650 kg per 100 meters. Calculate the maximum SAG in the conductor. If the height of the tower is 13 meters, estimate the clearance of conductor to the ground. Draw a figure and mark values of sag, clearance, span, height of conductor etc.
The number of disc insulators used in a suspension insulator setup with string efficiency 90 %, phase voltage 33 kV, and the voltage across insulator nearest to conductor 9 kV is . Calculate the weight due to ice on a transmission line where the Total weight of conductor = 3.2 Kg/m, actual weight of conductor = 1.6 Kg/m, and weight due to wind = 0.4 Kg/m.
3-phase single circuit bundled conductor line with two sub-conductors per phase has horizontalspacing with 6.1 m between the centre lines of adjacent phases. The distance between the subconductorsof each phase is 30.5 cm and each sub-conductor has a diameter of 2.54 cm. Find theinductance per phase per km. [0.988 mh]
12. There are 6 conductors in a double circuit line. Each conductor has a radius of 12 mm. The 6conductors are arranged horizontally. The center to center distance between the conductor is 2m. The sequence of conductors are from left to right as follows: a,b.c,a', b', c'. Calculate the inductance per km per phase of system. the a' 2 m 2 m 2 m 2 m 2 m
7. Two towers of height 40 m and 30 m respectively support a transmission line conductor at water crossing. The horizontal distance between the towers is 300 m. If the tension in the conductor is 1590 kg, find the clearance of the conductor at a point mid-way between the supports. Weight of conductor is 0-8 kg/m. [59 m] Bases of the towers can be considered to be at the water level. heed taonamiggien li
4.8 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 link- ages, and (c) the total inductance of the line.