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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Find the transmission parameters of the following network, using the formulas derived above:
Write ‘T’ for True and ‘F’ for False:
Constant A, B, C, D represents the voltage of a transmission line.
A conventional nominal T transmission line is composed of the following: a lumped shunt (parallel) impedance of 92 ohms at the center of the line and a lumped sending and receiving series impedance of 496 ohms for both ends. In a two-port network analysis, determine the Z12 parameter of the circuit described.
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- Consider the transmission line of Problem 5.18. (a) Find the ABCD parameters of the line when uncompensated. (b) For a series capacitive compensation of 70 (35 at the sending end and 35 at the receiving end), determine the ABCD parameters. Comment on the relative change in the magnitude of the B parameter with respect to the relative changes in the magnitudes of the A, C, and D parameters Also comment on the maximum power that can be transmitted when series compensated.arrow_forwardConsider a long radial line terminated in its characteristic impedance Zc. Determine the following: (a) V1/I1, known as the driving point impedance. (b) | V2 |/V1|, known as the voltage gain, in terms of al. (c) | I2 |/| I1 |, known as the current gain, in terms of al. (d) The complex power gain, S21/S12, in terms of al. (e) The real power efficiency, (P21/P12)=, terms of al. Note: 1 refers to sending end and 2 refers to receiving end. (S21) is the complex power received at 2; S12 is sent from 1.arrow_forwardDerive the ABCD constants for two transmission lines connected in parallel.arrow_forward
- A 29 Km line is terminated by its characteristic impedance. At a certain frequency the voltage at 1 Km from the sending end is 30% below that at the sending end, find the voltage across the load impedance interms of percentage of the sending end voltagearrow_forwardA 40-km, 220-kV, 60-Hz three-phase overhead transmission line has a per-phase resistanceof 0.15 W/km, a per-phase inductance of 1.3263 mH/km, and negligible shunt capacitance.Using the short line model, find the ABCD parameters. The sending-end voltage, voltageregulation, sending-end power, and transmission line efficiency when the line is supplyinga three-phase load of: (a) 381 MVA at 0.8 power factor lagging and at 220 kV, (b) 381MVAat 0.8 power factor leading and at 220 kV. How does the load type (capacitive or inductive)affect the sending voltage magnitude, voltage regulation and efficiency?arrow_forwardObtain the input impedance expression Zent for a transmission lineterminated in short circuitarrow_forward
- Find the transmission parameters for the system shown in Figure 1, assuming that the Networks shown are cascaded.arrow_forwardQuestion 1. The impedance of a 150 km long transmission line is ? = 0.06 + ?0.48 ?/??, and the shunt admittance value is given as ? = ?3.33?10−6 ?/??. Under 250 kV voltage at the end of the line A power of 250 MW is drawn with a reverse power factor cos ? = 0.95. Nominal π equivalent using the circuit; a) Find the ABCD parameters. b) Find the voltage, current and power factor per line.arrow_forwardDiscuss factors that affect selection of the support systems for the transmission lines. What are the key construction elements? What are their role? Present your discussion with respect to the key transmission parameters. Compare using these parameters overhead and buried transmission lines.arrow_forward
- A 30-km, 34.5-kV, 60-Hz, three-phase line has a positive-sequence series impedance z=0.19+j0.34/km. The load at the receiving end absorbs 10 MVA at 33 kV. Assuming a short line, calculate: (a) the ABCD parameters, (b) the sending-end voltage for a load power factor of 0.9 lagging, and (c) the sending-end voltage for a load power factor of 0.9 leading.arrow_forwardWith the system shown in the figure, use 100MVA as system base, and 230 kV as base voltage along the transmission line. For the same system in the figure, build the Y-bus matrix without the Load. 1. What is the element Y11? Provide the susceptance value 2. What is the element Y22? Provide the susceptance valuearrow_forwardWith two port paramters Explanation of why S21 changes when the resistors are shorted to ground. Should includedescription in terms of the wave behavior on the transmission line and impedance matchingarrow_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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Electrical Engineering
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:Cengage Learning
Lecture 4b -- Transmission Line Parameters; Author: EMPossible;https://www.youtube.com/watch?v=naG572ZnXqw;License: Standard Youtube License