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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.

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.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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### Electrical Power Transmission Analysis **Problem 19: Transmission Line Analysis** A 345 kV transmission line is 230 miles long, utilizing bundled conductors. This line uses two conductors per phase, with a separation of 19 inches between bundles, and a clearance of 23.5 feet between phases in a flat configuration. The derived parameters for this transmission system are provided as follows: | Parameter | Value | |--------------------------|-----------------------------| | Inductance | \(9.726 \times 10^{-7}\) H/m | | Capacitance | \(1.170 \times 10^{-11}\) F/m | | Resistance | \(4.605 \times 10^{-5}\) Ω/m | | Current Carrying Capacity | 1600 A per phase | **Tasks:** a. Determine the medium line length model equivalent π (pi) circuit values for this line. b. Calculate the long line model equivalent π (pi) circuit values for this line. c. Compare the values and implications of the medium and long line models. **Additional Notes:** You can calculate complex hyperbolic functions to assist with these tasks. d. Considering the nominal line voltage and the current carrying capacity of the line in amperes, determine the thermal capacity of this line in volt-amperes (VA). (Refer to the ACSR appendix table in your textbook for guidance.) **Page: 10**
Transcribed Image Text:### Electrical Power Transmission Analysis **Problem 19: Transmission Line Analysis** A 345 kV transmission line is 230 miles long, utilizing bundled conductors. This line uses two conductors per phase, with a separation of 19 inches between bundles, and a clearance of 23.5 feet between phases in a flat configuration. The derived parameters for this transmission system are provided as follows: | Parameter | Value | |--------------------------|-----------------------------| | Inductance | \(9.726 \times 10^{-7}\) H/m | | Capacitance | \(1.170 \times 10^{-11}\) F/m | | Resistance | \(4.605 \times 10^{-5}\) Ω/m | | Current Carrying Capacity | 1600 A per phase | **Tasks:** a. Determine the medium line length model equivalent π (pi) circuit values for this line. b. Calculate the long line model equivalent π (pi) circuit values for this line. c. Compare the values and implications of the medium and long line models. **Additional Notes:** You can calculate complex hyperbolic functions to assist with these tasks. d. Considering the nominal line voltage and the current carrying capacity of the line in amperes, determine the thermal capacity of this line in volt-amperes (VA). (Refer to the ACSR appendix table in your textbook for guidance.) **Page: 10**
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