Journal ArticleDOI
On the contribution of the electromagnetic field components in field-to-transmission line interaction
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TLDR
In this article, three different equivalent coupling formulations have been proposed for evaluating the interaction between an external electromagnetic field and a transmission line, and the contribution of a given electromagnetic field component is different depending on the particular adopted formulation.Abstract:
Based on the transmission line approximation, three different equivalent formulations have been proposed for evaluating the interaction between an external electromagnetic field and a transmission line, The difference among these "coupling" formulations, which are summarized for the case of a lossless line, lies essentially in the representation of the source terms as a function of the external electromagnetic field components. The authors show that the contribution of a given electromagnetic field component is different depending on the particular adopted formulation, To show that, the three formulations are employed to calculate the voltages induced on an overhead line by a nearby lightning strike, and the contribution to the induced voltage of the various electromagnetic field components explicitly appearing in each formulation is emphasized. The authors conclude that it is misleading to speak about the contribution of a given electromagnetic field component to the total induced voltages without first specifying the coupling formulation one is using.read more
Citations
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Journal ArticleDOI
Influence of a lossy ground on lightning-induced voltages on overhead lines
TL;DR: In this article, a comprehensive study on the effect of a lossy ground on the induced voltages on overhead power lines by a nearby lightning strike is presented, where the ground conductivity plays a role in both the evaluation of the lightning radiated fields and of the line parameters.
Journal ArticleDOI
An approximate formula for the calculation of the horizontal electric field from lightning at close, intermediate, and long range
TL;DR: In this paper, the authors present an approximate formula to calculate the horizontal electric field from lightning that is applicable for close, intermediate, and long distances to the lightning, at ground level and at a height above ground.
Journal ArticleDOI
Transient analysis of multiconductor lines above a lossy ground
TL;DR: In this article, the Sunde logarithmic approximation for the single-wire line ground impedance was extended to the case of a multiconductor line, where the inverse Fourier transform of the ground impedance presents singularities which complicate the numerical solution of the transmission line equations.
Journal ArticleDOI
A Review of Field-to-Transmission Line Coupling Models With Special Emphasis to Lightning-Induced Voltages on Overhead Lines
TL;DR: In this paper, the authors derived field-to-TL coupling equations for the case of a single-wire line above a perfectly conducting ground and extended the derived equations to deal with the presence of losses and multiple conductors.
Journal ArticleDOI
Induced voltage measurements on an experimental distribution line during nearby rocket triggered lightning flashes
TL;DR: In this paper, a de-energized experimental distribution line was triggered by a rocket triggered lightning flash near a deenergised experimental transmission line while simultaneous measurements of the induced phase to neutral voltage were performed.
References
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Journal ArticleDOI
Transient Response of Multiconductor Transmission Lines Excited by a Nonuniform Electromagnetic Field
TL;DR: In this paper, the time-domain transmission-line equations for uniform multiconductor transmission lines in a conductive, homogeneous medium excited by a transient, nonuniform electromagnetic (EM) field are derived from Maxwell's equations.
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The response of a terminated two-wire transmission line excited by a nonuniform electromagnetic field
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Formulation of the field-to-transmission line coupling equations in terms of magnetic excitation field
TL;DR: In this paper, an equivalent formulation is derived in which the source terms (or forcing functions) are expressed in terms of the magnetic excitation field, which is particularly useful for evaluating field-to-transmission-line coupling when the exciting field is determined experimentally, since only the measurement of the electric field is necessary.