EMP Coupling to a Straight Conductor Above Ground: Transmission Line Formulation Based on Electromagnetic Reciprocity
A simple model for coupling of an electromagnetic plane wave incident on a conductor above ground has been developed using reciprocity theory, providing some advantages as compared to the conventional transmission line approach. The model is developed using a semiinfinitely long single conductor above a lossy ground plane and connected by an arbitrary load impedance to a vertical grounding conductor. This configuration corresponds to the worstcase wave coupling, because it leads to a line induced current larger than in the cases of finite and multiconductor lines. A frequencydomain Thévenin equivalent model is developed to relate the incident wave amplitude to the voltage across a generic load, connected at any point on the vertical conductor. The application to the threat analysis of a highaltitude electromagnetic pulse impact on a power transmission line is discussed by considering the timedomain solution (via inverse Fourier transform) for an incident EMP fastrise transient (E1) waveshape, following the standard IEC specifications. For typical highvoltage power line load impedances, it is shown that voltage magnitudes in the MV range can be induced across the line termination, in the case of a wave with a neargrazing incidence angle and with wave vector aligned along the horizontal conductor.
 Authors:

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 Washington State Univ., Pullman, WA (United States). School of Electrical Engineering and Computer Science
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
 Publication Date:
 Grant/Contract Number:
 AC0500OR22725
 Type:
 Accepted Manuscript
 Journal Name:
 IEEE Transactions on Electromagnetic Compatibility
 Additional Journal Information:
 Journal Name: IEEE Transactions on Electromagnetic Compatibility; Journal ID: ISSN 00189375
 Publisher:
 IEEE
 Research Org:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
 Sponsoring Org:
 USDOE Office of Electricity Delivery and Energy Reliability (OE)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 24 POWER TRANSMISSION AND DISTRIBUTION; Electromagnetic pulse (EMP); highvoltage transmission lines; transmission line analysis
 OSTI Identifier:
 1462874
Olsen, Robert G., and Tarditi, Alfonso G.. EMP Coupling to a Straight Conductor Above Ground: Transmission Line Formulation Based on Electromagnetic Reciprocity. United States: N. p.,
Web. doi:10.1109/TEMC.2018.2838080.
Olsen, Robert G., & Tarditi, Alfonso G.. EMP Coupling to a Straight Conductor Above Ground: Transmission Line Formulation Based on Electromagnetic Reciprocity. United States. doi:10.1109/TEMC.2018.2838080.
Olsen, Robert G., and Tarditi, Alfonso G.. 2018.
"EMP Coupling to a Straight Conductor Above Ground: Transmission Line Formulation Based on Electromagnetic Reciprocity". United States.
doi:10.1109/TEMC.2018.2838080.
@article{osti_1462874,
title = {EMP Coupling to a Straight Conductor Above Ground: Transmission Line Formulation Based on Electromagnetic Reciprocity},
author = {Olsen, Robert G. and Tarditi, Alfonso G.},
abstractNote = {A simple model for coupling of an electromagnetic plane wave incident on a conductor above ground has been developed using reciprocity theory, providing some advantages as compared to the conventional transmission line approach. The model is developed using a semiinfinitely long single conductor above a lossy ground plane and connected by an arbitrary load impedance to a vertical grounding conductor. This configuration corresponds to the worstcase wave coupling, because it leads to a line induced current larger than in the cases of finite and multiconductor lines. A frequencydomain Thévenin equivalent model is developed to relate the incident wave amplitude to the voltage across a generic load, connected at any point on the vertical conductor. The application to the threat analysis of a highaltitude electromagnetic pulse impact on a power transmission line is discussed by considering the timedomain solution (via inverse Fourier transform) for an incident EMP fastrise transient (E1) waveshape, following the standard IEC specifications. For typical highvoltage power line load impedances, it is shown that voltage magnitudes in the MV range can be induced across the line termination, in the case of a wave with a neargrazing incidence angle and with wave vector aligned along the horizontal conductor.},
doi = {10.1109/TEMC.2018.2838080},
journal = {IEEE Transactions on Electromagnetic Compatibility},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {6}
}