Applications of a new EMTP line model for short overhead lines and cables

TitleApplications of a new EMTP line model for short overhead lines and cables
Publication TypeJournal Article
Year of Publication2002
AuthorsIbrahim, A. I., S. Henschel, A. C. Lima, and H. W. Dommel
JournalInternational Journal of Electrical Power & Energy Systems

This paper presents the applications of a new EMTP line model for the representation of short overhead transmission lines and cables. This line model overcomes the limitation of using a time step size not larger than the travel time. The interpolation errors inherent in this line model produce a filtering effect for higher frequencies. The new line is tested for two case studies. The first one is a case of transmission line energization. Simulation results for this case show that the new line model gives results for a short line which are close to the constant parameter line model results, while results with a pi-circuit show unrealistic high frequency oscillations. The new transmission line model is also tested for the case of a drive system, which involves power electronics devices. In this case, the new line model is used to represent a short cable and good results are obtained. The pi-circuit and the constant parameter line models would give unrealistic voltage waveforms. (C) 2002 Elsevier Science Ltd. All rights reserved.

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