Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c, distance between a and b is 12 m, b and c is spaced 12 m apart. The diameter of each line conductor is 2.5 cm. Calculate the Capacitance per phase per km (C1) for this arrangement. Calculate Capacitance per phase per km(C2) if the spacing between the conductors are reduced by 1/4th of the given spacing.

Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c, distance between a and b is 12 m, b and c is spaced 12 m apart. The diameter of each line conductor is 2.5 cm. Calculate the Capacitance per phase per km (C1) for this arrangement. Calculate Capacitance per phase per km(C2) if the spacing between the conductors are reduced by 1/4th of the given spacing.

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 4.9MCQ

See similar textbooks

Similar questions

2.5 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]
Derive the equation of Capacitance per phase for the 3-phase double circuit line with hexagonal spacing. (transposition of conductors is not required)
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
Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c, distance between a and b is 6 m, b and c is spaced 6 m apart. The diameter of each line conductor is 2.5 cm. Calculate the Capacitance per phase per km (L1) for this arrangement. Calculate Capacitance per phase per km(L2) if the spacing between the conductors are reduced by half. Calculate the Ratio of C2 with respect to C1. Capacitance in nF per Phase per Km for Arrangement 1 (C1) Capacitance in nF per phase per km for Arrangement 2 (C2) Ratio of C2 to C1
Consider a 3-phase, 50 HZ, 11 KV distribution system. Each of conductors is suspended by an insulator string having two identical porcelain insulators. The self-capacitance of the insulator is 5 times the shunt capacitance between link and ground. Find the voltages across two insulators.
Each conductor of a 3-0 overhead line is suspended from a cross arm of a steel tower by a string of 4 suspension insulators. The voltage across the third 33 kV. The shunt capacitance between each insulator and the earth is 1/8th of the capacitance of the insulator itself. Find the voltage across string and string efficiency. D-128 Lod Fa
A double-circuit its capacitance to neutral per mile. line is shown below. The conductor radius is 0.0452 ft. Determine 16' 16' a b 22' c' b' a'
A single core lead covered cable is to be designed for 68 kV(peak value) toearth. Its conductor diameter is 2 cm and its three insulating materials havepermittivities of 5, 4 and 3 respectively with the corresponding maximumsafe working stress of 38 kV/cm (r.m.s), 26 kV/cm (r.m.s) and 20 kV/cm(r.m.s) respectively. Find the minimum diameter of lead sheath.
Calculate the capacitance per km per phase for a 3 phase, 50Hz, double circuit line shown in figure below. Each conductor has a diameter of 25mm and subconductor spacing 0,3m. the line is completely transposed. 0.3m 6 m 6m
Each line of a 3-phase system given in figure is suspended by a string of 5 identical disks and the ratio of C1/C=0.1 (Shunt capacitance per self-capacitance) is given. If the string is connected to line of voltage 33kV. a) What is the voltage distribution over the unit of string and what is the string efficiency? b) When the string is supplied by a Guard Ring and this lead to add a two air capacitance of value 0.2C, 0.1C respectively to the nearest to the conductor. Find the new voltage distribution and the new efficiency.
Three Conductors of a 3-phase line are arranged at the corners of a triangle of sides A=2 m, B=2 m, and C=4 m. The diameter of each line conductor is 1.45 cm. a) Calculate the Capacitance per phase per km (C1) in nanofarad for this arrangement. b) Calculate capacitance per phase per km(C2) in nanofarad if the conductor if the spacing is doubled. c) Calculate the Ratio of C2 with respect to С1. a) b) c)
Discuss the desirable properties of insulators. Explain the causes of insulator failure due to electrical breakdown. Each line of a three-phase system is suspended by a string of three identical insulators of self-capacitance C farad. The shunt capacitance of connecting metal work of each insulator to earth is 20.7 % of C while for line it is 13.8 % of C. Calculate the string efficiency of the system if a guard ring increases the capacitance to the line of metal work of the lowest insulator to 0.25 C.