1- Combined power stations may be more effective considering the economic and environmental considerations. 2- Although increasing the spacing between conductors increases the capacitive reactance in overhead transmission lines, it may be sometimes recommended.

1- Combined power stations may be more effective considering the economic and environmental considerations. 2- Although increasing the spacing between conductors increases the capacitive reactance in overhead transmission lines, it may be sometimes recommended.

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 4.5P: A 60-Hz, 765-kV, three-phase overhead transmission line has four ACSR 900 kcmil 54/3 conductors per...

See similar textbooks

Related questions

Q: Three conductors of a 3-phase overhead line are arranged in a horizontal plane 6 m apart. The…

A: The capacitance of each conductor to neutral per 100 km of the line should be calculated as: -

Q: 3-phase 132 kV, 100 km, 50 Hz, single circuit line has horizontal spacing with 3.5 m between…

A: Given three phase line with132 kv,100 km,50HzThe conductor diameter d=1.2 cmraduis r=d2=0.6…

Q: Resistance of transmission line conductor is the most important cause power loss in a transmission…

A: resistance of transmission line conductor is the most important cause of power loss in a…

Q: Code: COFFEE. A single-core cable has a conductor diameter of 13.5 mm and insulation thickness of…

A: For a single−core cable, The diameter of the conductor is,d=13.5 mm The thickness of the…

Q: 3. A 3-phase 80 km long single circuit 66 kV transposed overhead line has horizontal spacing with 5…

Q: Conductance is always expressed as a real number and comprised the real part of admittance equation.…

A: we need to determine whether given statement is true or not.

Q: Q4: Each conductor of a 3-phase high-voltage transmission line is suspended by a string of 4…

A: Given data, V2=13.2 KV, V3=18 KVXc= 1Ω

Q: A three phase, 50 Hz, 66kV overhead line Problem 5 : conductors are placed in a horizontal plane as…

A: In a 3-phase transmission line the capacitance of each conductor is considered instead of…

Q: A d.c. 2-wire system is to be converted into a.c. 3-phase, 3-wire system by the addition of a third…

A: A DC 2-wire system is to be converted into 3-phase 3-wire system. We need to calculate the…

Q: Overhead Conductors used as Transmission Lines are always thickly insulated. Select one: True False

A: The overhead conductors used for transmission lines are generally ACSR (Alluminium Core Steel…

Q: A 3-phase, 50 Hz, 110 KV, overhead transmission

Q: A coaxial cable's shiled diameter is 0.4cm and the inner conductor has a diameter of 0.02cm. What is…

A: STEPS: First find the L and C of the cable using Inner and outer diameter Characteristics impedance…

Q: Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c,…

A: 1. Distance between a and b is 6 m, b and c is 6 m 2. Diameter of each conductor is 1.5 m 3.…

Q: A 3-phase, 50 Hz, 132 kV overhead line of length 150 km has conductors placed in a (b) horizontal…

Q: In power line cables the conductor size determines the current-carrying capability and voltage drops…

A: The specification of the power line cables The conductor size for current carrying capability and…

Q: The conductors of a 66 kV, 50 Hz three phase transmission line are suspended horizontally as shown…

A: Given l=300km r=0.05m spacing =0.2m d=3m

Q: Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c,…

A: As per the question the distance between the overhead line is 6 m. Therefore dab= 6 m…

Q: A.C. to transmit the same power and for the same loss and the same lamp voltage. Compare the copper…

A: Assuming that the power delivered in the two-wire DC system is P, the resistance per conductor be R1…

Q: an overhead transmission line has a span of 220 meters the conductor waiting 0.604 kg/m.What will be…

A: Given: Span, L=220 m Weight of conductor, w=0.604 kg/m Tension, T=2879 kg

Q: The diameter of the overhead lines in the form of cylindrical conductors in a 380 kV three-phase…

A: Given: RMS line voltage VL=380 kV, RMS value of puncture strength of air g=302=21.21 kV/cm.

Q: Determine the ampacity of a No. 12 AWG copper conductor with THHN insulation that will be used in a…

Q: A single-core cable working on a 230 kV, 3 phase system, if a dielectric stress of 85 kV/cm can be…

A: We have a Single-core cable which is working on the voltage (V) of 230 KV 3-phase system. Maximum…

Q: For same power capacity, the size of the conductor in single phase is lesser than conductor size in…

A: For the same power capacity, the size of the conductor in a single phase is lesser than the…

Q: The capacitance between the line to neutral of a three-phase 50 Hz, 66KV overhead line conductors…

A: In this question, line to neutral capacitance is given for horizontal configuration..We have to find…

Q: RMS VALUE OF MAXIMUM AND MINIMUM STRESSES IN INSULATION OF SINGLE CORE CABLE Emax=50kV/cm AND…

A: Here rms values of maximum and minimum stresses in insulation of single core cable are given

Q: RMS VALUE OF MAXIMUM AND MINIMUM STRESSES IN INSULATION OF SINGLE CORE CABLE Emax=50kV/cm AND…

A: The ratio of the maximum stress to the minimum stress is equal to the ratio of the radius of the…

Q: One of the following factor affects the resistance of the transmission line. O Temperature O…

A: we need to know which factor affects the resistance of the transmission line.

Q: CITE SOME OF THE REQUIREMENTS TO FEED THIS GENERATED ELECTRICITY TO THE TRANSMISSION LINES.

A: The answer as given below steps:

Q: Determine the dielectric stress per cm which can be applied on a single core cable working at 33 KV,…

Q: The capacitance between the line to neutral of a three-phase 50 Hz, 66KV overhead line conductors…

A: Capacitance between line to neutral i.e. phase capacitance is 7.4*10-7Farad/m Now in a 3-phase…

Q: A Double Circuit Transmission System will always only have six cables or conductors suspended on the…

Q: You are a Power System Design Engineer of a power utility company in Malaysia. You are tasked to…

Q: What is the maximum length in km for 1 phase transmission line having conductor of 0.875 square…

Q: The capacitance between the line to neutral of a three-phase 50 Hz, 66KV overhead line conductors…

A: Find the capacitive reactance of transmission line? If capacitance c = 7.7×10-7 F/ph/m…

Q: Draw the equivalent circuits of the lines by writing the impedance values in place as given in…

A: The equivalent circuit of a transmission line is nothing but the representation of a transmission…

Q: The figure below shows a 'go' and 'return' conductor of a single-phase power distribution line. If…

Q: Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c,…

A: Given data: Distance a-b is 12 m Distance b-c is 12 m Distance c-a is 12 m The diameter of each…

Q: One 33kV, 50Hz, 3-phase underground cable, 3 single-core cables of 4km length are used. The diameter…

A: Given:V=33 kVf=50 Hzl=4 km =4000 md=2.5 cm =0.025 mcircular thickness=0.5 cmso, D=2.5+20.5=3.5…

Q: RMS VALUE OF MAXIMUM AND MINIMUM STRESSES IN INSULATION OF SINGLE CORE CABLE Emax=50kV/cm AND…

A: The maximum and minimum stress in the insulation of 1-core cable is related to the radius of the…

Q: Evaluate the Merz-Price circulating-current scheme for an Alternator protection with appropriate…

A: Alternators are the important parts of electrical machines and power systems in terms of power…

Q: 1. A Single-phase, two-wire overhead line has solid cylindrical copper conductors with 2.4 cm…

Q: What is the percentage saving in feeder conductor if the line voltage in a 2 wire dc system be…

A: Most of human energy requirement is meet by generating electrical energy. Once electrical energy is…

Q: In a 380 kV three-phase transmission system, the diameter of the overhead lines in the form of…

A: Part (a): The line voltage is given as 380 kV. The disruptive critical voltage is determined as:…

Q: What are the factors which governs the performance of transmission line? Subject Power Transmission…

A: The main performance metrics of transmission lines are -

Q: A three phase, 50 Hz, 55 kV overhead line conductors are placed in a horizontal plane as shown in…

A: We will use standerd expression for calculating capacitance per phase per meter. Capacitance per…

Q: What is the maximum length in km for 1 phase transmission line having conductor of 0.775 square…

A: According to the question we have to find the value of maximum length in km.

Q: A single core concentric cable is to be manufactured for a 100kV, 50Hz transmission system. The…

A: Given data, The maximum permissible safe stress is gmax = 10,000,000 V/m. The working line voltage…

Q: Bundled Conductors are done in order to reduce the diameter of the cable to used to carry huge…

A: 1)Bundled conductors are used to reduce corona loss. 2)It leads to reduction in line inductance and…

Q: Figure 2 On the 1km long dc distributor above the applied voltage at point O is 200V. Lengths loa =…

Question

PLZ ANS IT

1- Combined power stations may be more effective considering the economic and environmental
considerations.
2- Although increasing the spacing between conductors increases the capacitive reactance in overhead
transmission lines, it may be sometimes recommended.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Transmission line conductance is usually neglected in power system studies. True False
A 60-Hz, 765-kV, three-phase overhead transmission line has four ACSR 900 kcmil 54/3 conductors per phase. Determine the 60 Hz resistance of this line in ohms per kilometer per phase at 50C.
Calculate the inductive reactance in /km of a bundled 500-kV, 60-Hz, three-phase completely transposed overhead line having three ACSR 1 113 kcmil conductors per bundle, with 0.5 m between conductors in the bundle. The horizontal phase spacings between bundle centers are 10, 10, and 20 m.
A 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.
A three-phase overhead transmission line is designed to deliver 190.5 M VA at 220 kV over a distance of 63 km, such that the total transmission line loss is not to exceed 2.5 of the rated line MVA. Given the resistivity of the conductor material to be 2.84108-m, determine the required conductor diameter and the conductor size in circular mils. Neglect power losses due to insulator leakage currents and corona.
Three ACSR Drake conductors are used for a three-phase overhead transmission line operating at 60 Hz. The conductor configuration is in the form of an isosceles triangle with sides of 20, 20, and 38 ft. (a) Find the capacitance-to-neutral and capacitive reactance-to-neutral for each 1-mile length of line. (b) For a line length of 175 mi and a normal operating voltage of 220 kV, determine the capacitive reactance-to-neutral for the entire line length as well as the charging current per mile and total three-phase reactive power supplied by the line capacitance.
PowerWorid Simulator case Problem 3_60 duplicates Example 3.13 except that a resistance term of 0.06 per unit has been added to the transformer and 0.05 per unit to the transmission line. Since the system is no longer lossless, a field showing the real power losses has also been added to the oneline. With the LTC tap fixed at 1.05, plot the real power losses as the phase shift angle is varied from 10 to +10 degrees. What value of phase shift minimizes the system losses?
Overhead transmission-line conductors are bare with no insulating cover. (a) True (b) False
For either single-phase two-wire line or balanced three-phase three-wire line with equal phase spacing D and with conductor radius r, the capacitance (line-to-neutral) in F/m is given by Can=.
Figure 3.39 shows a oneline diagram of a system in which the three-phase generator is rated 300 MVA, 20 kV with a subtransient reactance of 0.2 per unit and with its neutral grounded through a 0.4- reactor. The transmission line is 64km long with a cries reactance of 0.5-/km. The three-phase transformer T1 is rated 350MVA.230/20kV with a leakage reactance of 0.1 per unit. Transformer T2 is composed of three single-phase transformers, each rated 100 MVA, 127/13.2kV with a leakage reactance of 0.1 per unit. Two 13.2kV motors M1 and M2 with a subtransient reactance of 0.2 per unit for each motor represent the load. M1 has a rated input of 200 MVA with its neutral grounded through a 0.4- current-limiting reactor, M2 has a rated input of 100 MVA with its neutral not connected to ground. Neglect phase shifts associated with the transformers. Choose the generator rating as base in the generator circuit and draw the positive-sequence reactance diagram showing all reactances in per unit.
Considering two parallel three-phase circuits that are close together, when calculating the equivalent series-impedance and shunt-admittance matrices, mutual inductive and capacitive couplings between the two circuits can be neglected. True False
The following parameters are based on a preliminary line design: per unitVS=1.0, VR=0.9 per unit, =5000km,Zc=320,=36.8. A three-phase power of 700 MW is to be transmitted to a substation located 315 km from the source of power. (a) Determine a nominal voltage level for the three-phase transmission line, based on the practical line-loadability equation. (b) For the voltage level obtained in part (a), determine the theoretical maximum power that can be transferred by the line.