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Modeling of a buried conductor for an electromagnetic transient simulation
Author(s) -
Ametani Akihiro,
Soyama Daigo,
Ishibashi Yu,
Nagaoka Naoto,
Okabe Shigemitsu
Publication year - 2006
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20009
Subject(s) - conductor , emtp , electrical conductor , transient (computer programming) , admittance , electrical impedance , mechanics , electrical engineering , ground , voltage , insulator (electricity) , engineering , acoustics , physics , materials science , computer science , electric power system , power (physics) , quantum mechanics , composite material , operating system
The paper has proposed a distributed‐line model of a buried bare conductor with horizontal and vertical configuration by assuming an artificial insulator outside of the bare conductor so that the characteristic impedance and the propagation velocity of the buried conductor is evaluated as an insulated conductor (cable) by the cable constants/parameters of the EMTP. A shunt admittance is added to the conductor at every short distance to represent currents flowing into the earth from the original bare conductor. The admittance circuit and the parameters are evaluated either by experimental results or by published references of grounding electrodes. The model circuit has been applied to simulate transient currents and voltages on horizontal and vertical buried conductors, and the simulation results are compared with the measured results. It has been observed that the simulation results of the currents agree satisfactorily with the measured results, but the results of the voltages do not seem satisfactory. The reason for this has been discussed based on the measured results. © 2006 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.