A 345kv line is 230 miles long and used bundled conductors. It has two crow conductors/phase, with bundles separation of 19 inches. It is in a flat configuration, with 23.5 feet clearance between phases. From these values, the following parameters were determined: Inductance Capacitance Resistance Current carrying capacity 9.726e-7 henries per meter 1.170e-11 farads per meter 4.605e-5 ohms/meter 1600 amps per phase a. Find the medium line length model equivalent pi circuit values for this line. b. Find the long line model equivalent pi circuit values for this line. c. Compare the values for these two models.

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 4.43P: Three ACSR Drake conductors are used for a three-phase overhead transmission line operating at 60...
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19. A 345kv line is 230 miles long and used bundled conductors. It has two crow conductors/phase,
with bundles separation of 19 inches. It is in a flat configuration, with 23.5 feet clearance
between phases. From these values, the following parameters were determined:
Inductance
Capacitance
Resistance
Current carrying capacity
9.726e-7 henries per meter
1.170e-11 farads per meter
4.605e-5 ohms/meter
1600 amps per phase
a. Find the medium line length model equivalent pi circuit values for this line.
b.
Find the long line model equivalent pi circuit values for this line.
c.
Compare the values for these two models.
You can calculato complov hyperbolic functions needed for the above at
d. Based on the nominal line voltage and the current carrying capacity of the line in amps,
what is the thermal capacity of this line in volt-amps? (hint: see ACSR appendix table in your
textbook)
Page | 10
Transcribed Image Text:19. A 345kv line is 230 miles long and used bundled conductors. It has two crow conductors/phase, with bundles separation of 19 inches. It is in a flat configuration, with 23.5 feet clearance between phases. From these values, the following parameters were determined: Inductance Capacitance Resistance Current carrying capacity 9.726e-7 henries per meter 1.170e-11 farads per meter 4.605e-5 ohms/meter 1600 amps per phase a. Find the medium line length model equivalent pi circuit values for this line. b. Find the long line model equivalent pi circuit values for this line. c. Compare the values for these two models. You can calculato complov hyperbolic functions needed for the above at d. Based on the nominal line voltage and the current carrying capacity of the line in amps, what is the thermal capacity of this line in volt-amps? (hint: see ACSR appendix table in your textbook) Page | 10
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