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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Explain the carrier current protection scheme for a long transmission line. What are the important elements/components of this type of protection scheme
What is The effect of increasing VS in power transmission line performance study?
The VSWR on a loss-free line of 50-ohm characteristic impedance is 4.2. Determine the value of the purely resistive load impedance which is known to be larger than 50 ohms.
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- The maximum power flow for a lossy line is somewhat less than that for a lossless line. True Falsearrow_forwardTransmission line conductance is usually neglected in power system studies. True Falsearrow_forwardPlease answer in short and dont copy i will like.... A. For underground and underwater transmission, why are line losses for HVDC cables lower than those of ac cables with similar capacity? B. What are the benefits of controlling of power flows on individual lines? What are the risks?arrow_forward
- For a transmission line: a) Draw the lumped-element circuit model. b) State what each element of the model (R, L, G, C) physically represents. c) For lossy and lossless media, express the characteristic impedance and phase velocity of the transmission line in terms of R, L, G, C.arrow_forwardone circuit of a sinlge phase transmission line is composed of three solid 0.5 cm radius wires. the return circuit is the composed of two solid 2.5 cm radius wire . the arrangement of conductors is as shwon in figure below. applying the concept of GMD and GMR , find the inductance of the complete line in millihenry per kilometerarrow_forwardA 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.arrow_forward
- A three-phase power of 460 MW is transmitted to a substation located 500 km from the source of power. With VS=1. per unit, VR=0.9 per unit, =5000 km, Zc=500, and =36.87, determine a nominal voltage level for the lossless transmission line based on Eq. (5.4.29) of the text. Using this result, find the theoretical three-phase maximum power that can be transferred by the lossless transmission line.arrow_forwardFor 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=.arrow_forwardFor a lossless open-circuited line, express the sending-end voltage, V1, in terms of the receiving-end voltage, V2, for the three cases of short-line model, medium-length line model, and long-line model. Is it true that the voltage at the open receiving end of a long line is higher than that at the sending end, for small 1?arrow_forward
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- Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning
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ISBN:9781305632134
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Series compensation of long transmission lines; Author: Georg Schett;https://www.youtube.com/watch?v=smOqSxFBvVU;License: Standard Youtube License