Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN: 9781305632134
Author: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 4.23MCQ
For a completely transposed three-phase line identical conductors, each with GMR denoted
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A three-phase transposed line is composed of one ACSR Bobolink conductor per phase with a horizontal spacing of 11 meters as shown in the figure.
phase with a horizontal spacing of 11 meters as shown in the figure.
The conductors have a diameter of 3.625 cm and a RMG of 1.439 cm.
Calculate the inductance and capacitance to the neutral of the line.
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]
(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
Chapter 4 Solutions
Power System Analysis and Design (MindTap Course List)
Ch. 4 - ACSR stands for Aluminum-clad steel conductor...Ch. 4 - Overhead transmission-line conductors are bare...Ch. 4 - Alumoweld is an aluminum-clad steel conductor....Ch. 4 - EHV lines often have more than one conductor per...Ch. 4 - Shield wires located above the phase conductors...Ch. 4 - Conductor spacings, types, and sizes do have an...Ch. 4 - A circle with diameter Din.=1000Dmil=dmil has an...Ch. 4 - An ac resistance is higher than a dc resistance....Ch. 4 - Prob. 4.9MCQCh. 4 - Transmission line conductance is usually neglected...
Ch. 4 - Prob. 4.11MCQCh. 4 - Prob. 4.12MCQCh. 4 - For a single-phase, two-wire line consisting of...Ch. 4 - For a three-phase three-wire line consisting of...Ch. 4 - For a balanced three-phase positive-sequence...Ch. 4 - A stranded conductor is an example of a composite...Ch. 4 - lnAk=lnAk True FalseCh. 4 - Prob. 4.18MCQCh. 4 - Expand 6k=13m=12Dkm.Ch. 4 - Prob. 4.20MCQCh. 4 - For a single-phase two-conductor line with...Ch. 4 - In a three-phase line, in order to avoid unequal...Ch. 4 - For a completely transposed three-phase line...Ch. 4 - Prob. 4.24MCQCh. 4 - Does bundling reduce the series reactance of the...Ch. 4 - Does r=e14r=0.788r, which comes in calculation of...Ch. 4 - In terms of line-to-line capacitance, the...Ch. 4 - For either single-phase two-wire line or balanced...Ch. 4 - Prob. 4.29MCQCh. 4 - Prob. 4.30MCQCh. 4 - Prob. 4.31MCQCh. 4 - Prob. 4.32MCQCh. 4 - Prob. 4.33MCQCh. 4 - Prob. 4.34MCQCh. 4 - The affect of the earth plane is to slightly...Ch. 4 - When the electric field strength at a conductor...Ch. 4 - Prob. 4.37MCQCh. 4 - Prob. 4.38MCQCh. 4 - Considering two parallel three-phase circuits that...Ch. 4 - The Aluminum Electrical Conductor Handbook lists a...Ch. 4 - The temperature dependence of resistance is also...Ch. 4 - A transmission-line cable with a length of 2 km...Ch. 4 - One thousand circular mils or 1 kcmil is sometimes...Ch. 4 - A 60-Hz, 765-kV, three-phase overhead transmission...Ch. 4 - A three-phase overhead transmission line is...Ch. 4 - If the per-phase line loss in a 70-km-long...Ch. 4 - A 60-Hz, single-phase two-wire overhead line has...Ch. 4 - Prob. 4.9PCh. 4 - A 60-Hz, three-phase three-wire overhead line has...Ch. 4 - Prob. 4.11PCh. 4 - Find the inductive reactance per mile of a...Ch. 4 - A single-phase overhead transmission line consists...Ch. 4 - Prob. 4.14PCh. 4 - Find the GMR of a stranded conductor consisting of...Ch. 4 - Prob. 4.16PCh. 4 - Determine the GMR of each of the unconventional...Ch. 4 - A 230-kV, 60-Hz, three-phase completely transposed...Ch. 4 - Prob. 4.19PCh. 4 - Calculate the inductive reactance in /km of a...Ch. 4 - Rework Problem 4.20 if the bundled line has (a)...Ch. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - Prob. 4.24PCh. 4 - For the overhead line of configuration shown in...Ch. 4 - Prob. 4.26PCh. 4 - Figure 4.34 shows double-circuit conductors'...Ch. 4 - For the case of double-circuit, bundle-conductor...Ch. 4 - Prob. 4.29PCh. 4 - Figure 4.37 shows the conductor configuration of a...Ch. 4 - Prob. 4.32PCh. 4 - Prob. 4.33PCh. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - Prob. 4.36PCh. 4 - Prob. 4.38PCh. 4 - Calculate the capacitance-to-neutral in F/m and...Ch. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - Prob. 4.42PCh. 4 - Three ACSR Drake conductors are used for a...Ch. 4 - Consider the line of Problem 4.25. Calculate the...Ch. 4 - Prob. 4.45PCh. 4 - Prob. 4.46PCh. 4 - Prob. 4.47PCh. 4 - The capacitance of a single-circuit, three-phase...Ch. 4 - Prob. 4.49PCh. 4 - Prob. 4.50PCh. 4 - Prob. 4.51PCh. 4 - Approximately how many physical transmission...Ch. 4 - Prob. BCSQCh. 4 - Prob. CCSQCh. 4 - Prob. DCSQ
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- Conductor spacings, types, and sizes do have an impact on the series impedance and shunt admittance. True Falsearrow_forwardA 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.arrow_forwardA 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.arrow_forward
- For a single-phase two-conductor line with composite conductors x and y, express the inductance of conductor x in terms of GMD and its GMR.arrow_forwardIn a three-phase line, in order to avoid unequal phase inductances due to unbalanced flux linkages, what technique is used?arrow_forwardConsider the 500 kV, three phase bundled conductor line as shown in the figure below. Find the line to neutral capacitance. 0.5 m 30 mm (0) (O to Ine 15 m 15 marrow_forward
- Derive the equation of Capacitance per phase for the 3-phase double circuit line with hexagonal spacing. (transposition of conductors is not required)arrow_forward2.5 A 3-phase single circuit bundled conductor line with two sub-conductors per phase has horizontal spacing with 6.1 m between the centre lines of adjacent phases. The distance between the sub- conductors of each phase is 30.5 cm and each sub-conductor has a diameter of 2.54 cm. Find the inductance per phase per km. [0.988 mH]arrow_forwardIn a single-phase transmission line circuit, three 0.25 It consists of a conductor with a radius of cm (a, b, c). The return circuit likewise consists of three parts of the same radius. consists of two conductors (d, e, f). of conductors placement is given. of each conductor Calculate the inductance and the total inductance.arrow_forward
- A single phase 2 conductor operates at 50Hz, the diameter of each condcutor is 60mm and spacing between condcutor is 5m, find the loop inductance of the line.arrow_forwardA 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 + j10.9770arrow_forwardQUESTION 2.3 Find the capacitance to neutral for the signal-circuit, three-phase, 345-kV line with conductors having an outside diameter of 1.075 in. with phase configuration forming an "H” system (i.e., a horizontal phase configuration). The adjacent phase separation of the conductors is 20.0 ft. A 20.0 ft B Figure 2. 20.0 ft Carrow_forward
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