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Type: Artigo de periódico
Title: A new procedure to derive transmission-line parameters: Applications and restrictions
Author: Kurokawa, S
Pissolato, J
Tavares, MC
Portela, CM
Prado, AJ
Abstract: The objective of this paper is to show an alternative methodology to calculate transmission-line parameters per unit length. With this methodology, the transmission-line parameters can be obtained starting from impedances measured in one terminal of the line. First, the article shows the classical methodology to calculate frequency-dependent transmission-line parameters by using Carson's and Pollaczeck's equations for representing the ground effect and Bessel's functions to represent the skin effect. After that, a new procedure is shown to calculate frequency-dependent transmission-line parameters directly from currents and voltages of an existing line. Then, this procedure is applied in a two-phase and a three-phase transmission line whose parameters have been previously calculated by using the classical methodology. Finally, the results obtained by using the new procedure and by using the classical methodology are compared. The article shows simulations results for a typical frequency spectrum of switching transients (10 Hz to 10 kHz).
Subject: electromagnetic transients
frequency dependence
modal transformation
phase domain
transmission line
transmission-line parameters
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Citation: Ieee Transactions On Power Delivery. Ieee-inst Electrical Electronics Engineers Inc, v. 21, n. 1, n. 492, n. 498, 2006.
Rights: fechado
Identifier DOI: 10.1109/TPWRD.2005.852296
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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