Q3(b) A 3-phase, 50 Hz, 66 kV overhead line conductors are placed in a horizontal plane as shown in Figure Q3(b). The conductor diameter is 1-25 cm. If the line length is 200 km, calculate : (i) capacitance between any two conductors; (ii) charging current per phase, assuming complete transposition of the line and (iii) capacitance between two conductors of a 3-phase line and explain how capacitance exist between the two conductors. -2m –

Q3(b) A 3-phase, 50 Hz, 66 kV overhead line conductors are placed in a horizontal plane as shown in Figure Q3(b). The conductor diameter is 1-25 cm. If the line length is 200 km, calculate : (i) capacitance between any two conductors; (ii) charging current per phase, assuming complete transposition of the line and (iii) capacitance between two conductors of a 3-phase line and explain how capacitance exist between the two conductors. -2m –

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 4.31MCQ

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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.
Find the inductive reactance per mile of a single-phase overhead transmission line operating at 60 Hz given the conductors to be Partridge and the spacing between centers to be 30 ft.
The diameter of the overhead lines in the form of cylindrical conductors in a 300 kV three-phase transmission system is 20 mm.a) - How much distance should there be between two conductors using the maximum area calculation equations?Calculate. (Puncture peak strength of air is 30kV / cm.)b) - In this configuration, if the distance between phase conductors is 0m, at what voltage levelCalculate the discharge occurs?c) - Maximum electric field in the same configuration, for electrode distances to be 0mCalculate the value. If needed in calculations Ꜫ0 = 8.854x10-12 F / m)
The conductors of a 10 km long, single phase, two wire line are seperated by a distance of 1.5 m. The diameter of each conductor is 1 cm. If the conductors are of copper, the inductance of the circuit is ??
Q2: A single-phase transmission line consisting of two conductors, the radius of each conductor is 0.4 cm, the distance between the conductors is three and half meters and the height above ground is eight meter. (1) The capacitance in µF/km without effect of ground? (2) The capacitance in µF/km with effect of ground?
Using a 138-kV, 50 km long line “Partridge” conductor and 5 m distance between phases, there is a horizontal connection. way placed. If we neglect the resistance of the line, the maximum that can be transmitted for the following cases calculate percent increases in power (|VS| and |VR| fixed and the power angle is limited to δ 45°). If “Partridge” conductors are replaced with “Osprey” conductors with twice the aluminum area, If a second “Partridge” conductor is placed as a double bundle 40 cm apart, If the voltage level is increased to 230 kV by increasing the phase-to-phase distances of the existing line to 8 m.
The diameter of the overhead lines in the form of cylindrical conductors in a 300 kV three-phase transmission system is 20 mm. a) - How much distance should there be between two conductors using the maximum area calculation equations? Calculate. (Puncture peak strength of air is 30kV / cm.) b) - In this configuration, if the distance between phase conductors is 0 m, will discharge calculation? c) - Maximum electric field in the same configuration, for electrode distances to be A m Calculate the value. (When heard in calculations Ꜫ0 = 8.854x10-12 F / m)
(b) A 3-phase, 50 Hz, 132 kV overhead line of length 150 km has conductors placed in ahorizontal plane. The diameter of the conductors is 20 mm and assume completetransposition arrangement is applied. (i) Analyse the charging current per phase when the conductors spacing are set at 4 m (ii) Investigate the range of conductor spacing that should be chosen in order to reducethe magnitude of the charging current per phase in Q2 (b)(i) by 5% or more.
A 11 -mile long, 58 Hz, single-phase, 2-wire, transmission line is composed of 0.84 -inch diameter solid conductors. If the separation between conductors is 3 ft., What is inductance per conductor per unit length in (mH/mi)?
A three phase, 11 KV, underground cable system, consider a single core of conductor radius 0.5 cm diameter and lead sheath of 1.25 cm. The core and lead sheath have been separated by two intersheaths with radius 0.75 cm and 1 cm. Draw the cable core, dielectric and intersheath layers showing the thickness of each layer, then determine the voltages on the both intersheaths. Suppose the maximum stress on the layers are the same.
A 230 kV, 60 Hz, three-phase completely transposed overhead line has one ACSR 874.5-kcmil conductor per phase and flat horizontal phase spacing, with 8 m between adjacent conductors (refer Table A.4). Determine the inductance in H/m and the inductive reactance in Ω/km.
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