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Type: Artigo de periódico
Title: Efficient procedure to evaluate electromagnetic transients on three-phase transmission lines
Author: Costa, ECM
Kurokawa, S
Pissolato, J
Prado, AJ
Abstract: This paper presents a hybrid way mixing time and frequency domain for transmission lines modelling. The proposed methodology handles steady fundamental signal mixed with fast and slow transients, including impulsive and oscillatory behaviour. A transmission line model is developed based on lumped elements representation and state-space techniques. The proposed methodology represents an easy and practical procedure to model a three-phase transmission line directly in time domain, without the explicit use of inverse transforms. The proposed methodology takes into account the frequency-dependent parameters of the line, considering the soil and skin effects. In order to include this effect in the state matrices, a fitting method is applied. Furthermore the accuracy of proposed the developed model is verified, in frequency domain, by a simple methodology based on line distributed parameters and transfer function related to the input/output signals of the lumped parameters representation. In addition, this article proposes the use of a fast and robust analytic integration procedure to solve the state equations, enabling transient and steady-state simulations. The results are compared with those obtained by the commercial software Microtran (EMTP), taking into account a three-phase transmission line, typical in the Brazilian transmission system.
Country: Inglaterra
Editor: Inst Engineering Technology-iet
Citation: Iet Generation Transmission & Distribution. Inst Engineering Technology-iet, v. 4, n. 9, n. 1069, n. 1081, 2010.
Rights: fechado
Identifier DOI: 10.1049/iet-gtd.2009.0660
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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