For the Figure 2 shown: A 61 -mile long, 64 Hz, single-phase, 2-line (line a and line b), transmission line is composed of 2 composite conductors per line with 0.64 -inch diameter solid conductor each. If the separation D in the figure is 14 ft., What is inductance per line per unit length in (mH/mi)? a O bo D Figure 2 b' O D/2 。+ a

For the Figure 2 shown: A 61 -mile long, 64 Hz, single-phase, 2-line (line a and line b), transmission line is composed of 2 composite conductors per line with 0.64 -inch diameter solid conductor each. If the separation D in the figure is 14 ft., What is inductance per line per unit length in (mH/mi)? a O bo D Figure 2 b' O D/2 。+ a

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 4.23P

See similar textbooks

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.
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
A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of 3 cm with a spacing 3.5 m between centers. (a) Determine the total line inductance in mH/m. (b) Given the operating frequency to be 60 Hz, find the total inductive reactance of the line in /km and in/mi. (c) If the spacing is doubled to 7 m, how does the reactance change?
For the overhead line of configuration shown in Figure 4.33 operating at 60 Hz and a conductor temperature of 700C, determine the resistance per phase, inductive reactance in ohms/mile/phase, and the current-carrying capacity of the overhead line. Each conductor is ACSR Cardinal of Table A.4.
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 50 -km long, 30 Hz, single-phase, 2-wire, transmission line is composed of 49 -mm diameter solid conductors. If the inductance per conductor of the line is 1.011 in mH/km, what is the separation distance between conductors in meter?
A 55 -km long, 50 Hz, single-phase, 2-wire, transmission line is composed of 26 -mm diameter solid conductors. If the separation between conductors is 2.8 m., What is the inductance per conductor per unit length in (mH/km)?
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 geometric mean radius of the conductor in a 380 kV, 120 km long transmission line 24mm. The roughness factor of the conductor is 0,98. Geometric mean length between phases of conductors 3,2 m. Air pressure across the line 725 mmHg, temperature 18 degrees Celcius and the conductor surface temperature is 85 degrees Celsius.According to this,a) Calculate the voltage at which ionization starts and the corona voltage.b) Find the corona loss for operating voltage with Peek formula.c) Calculate the total corona loss of the line with the Peek formula for a 15% increase in operating voltage.
A 3 phase 140 kV line with 43.715 cm of distance separation between the conductor so that corona takes place if the line voltage exceeds 250 kV (r.m.s.). If the value of potential gradient at which ionization occurs can be taken as 30 kV (max) per cm, and if the temperature is 40°C and atmospheric pressure is 76 cm, find the radius of the conductor.
3. A single-phase, two-wire transmission line, 15 km long, is made up of round conductors, each0.8 cm in diameter, separated from each other by 40 cm. Calculate the equivalent diameter of afictitious hollow, thin-walled conductor having the same inductance as the original line. What isthe value of this inductance? Answer: 0.623 cm, 29.13 mH
Geometric mean radius of a 400 kV, 200 km three-phase transmission line 20 mm dir. The roughness factor of the conductor is 0.8 and the geometric mean length between phases is 11 m. Air pressure along the line is 700 mm Hg and the temperature is 20 ° C. In this transmission line; a) - Calculate the corona voltage and the voltage at which ionization begins with impingement particles. b) - Find the total corona loss in the three phase system for the operating voltage with the Peek formula. c) - Find the total corona loss for 10% increase in operating voltage.