Closed-Form Expressions for the Analysis of Wave Propagation in Overhead Distribution Lines

Theofilos A. Papadopoulos, Andreas I. Chrysochos, Christos K. Traianos and Grigoris Papagiannis
Additional contact information
Theofilos A. Papadopoulos: Power Systems Laboratory, Department of Electrical and Computer Engineering, Democritus University of Thrace, GR-67100 Xanthi, Greece
Andreas I. Chrysochos: Research and Development Department, Hellenic Cables, GR-15125 Athens, Greece
Christos K. Traianos: Power Systems Laboratory, Department of Electrical and Computer Engineering, Democritus University of Thrace, GR-67100 Xanthi, Greece
Grigoris Papagiannis: Power Systems Laboratory, School of Electrical and Computer Engineering, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece

Energies, 2020, vol. 13, issue 17, 1-29

Abstract: The calculation of the influence of the imperfect earth on overhead conductors is an important issue in power system analysis. Rigorous solutions contain infinite integrals; thus, due to their complex form, different simplified closed-form expressions have been proposed in the literature. This paper presents a detailed analysis of the effect of different closed-form expressions on the investigation of the wave propagation of distribution overhead lines (OHLs). A sensitivity analysis is applied to determine the most important properties influencing the calculation of the OHL parameters. The accuracy of several closed-form earth impedance models is evaluated as well as the influence of the displacement current and imperfect earth on the shunt admittance, which are further employed in the calculation of the propagation characteristics of OHLs. The frequency-dependence of the soil electrical properties, as well as the application of different modal decomposition algorithms, are also investigated. Finally, results on the basis of frequency-domain signal scans and time-domain electromagnetic transient responses are also discussed.

Keywords: distribution lines; earth admittance; earth impedance; electromagnetic transients; frequency-dependent soil; high frequency; modal transformation matrices; wave propagation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/17/4519/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/17/4519/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:17:p:4519-:d:407073

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().