Author
L. O. Barthold
Bio: L. O. Barthold is an academic researcher. The author has contributed to research in topics: Transient (oscillation) & Transmission line. The author has an hindex of 1, co-authored 1 publications receiving 16 citations.
Topics: Transient (oscillation), Transmission line
Papers
More filters
Cited by
More filters
TL;DR: In this article, a sensitivity study of HV and EHV lightning performance shows that surge response characteristics of towers and lines are as important as the footing response, and new equations for tower surge impedance and tower travel time are proposed to deal with the most common situation of a midspan stroke to the skywire.
Abstract: A sensitivity study of HV and EHV lightning performance shows that surge response characteristics of towers and lines are as important as the footing response. Tower travel time has a very large sensitivity for taller double-circuit lines. Existing methods for analysis of tower and line response have considerable uncertainty. This uncertainty is resolved by extensions to travelling- wave analysis combined with experimental verification. New equations for tower surge impedance and tower travel time are proposed to deal with the most common situation of a midspan stroke to the skywire.
104 citations
TL;DR: In this paper, a new method was developed to study the transient behavior of non-uniform transmission lines whose parameters can have any arbitrary space variation, using the exponential line as a building block, s-domain expressions were obtained for the voltage and current at any point along the nonuniform line.
Abstract: A new method has been developed to study the transient behavior of nonuniform transmission lines whose parameters can have any arbitrary space variation. Using the exponential line as a building block, s-domain expressions are obtained for the voltage and current at any point along the nonuniform line. An efficient numerical Laplace-transform inversion technique is then used to compute the time-domain solution. Computer simulations and comparisons with other solution methods are included. >
59 citations
TL;DR: In this article, the authors extended the traveling-wave technique to non-uniform lines by attributing distributed reflection and refraction coefficients to each point on the line, and derived analytical expressions giving the variations in voltage and current wave fronts as they travel along a nonuniform line as well as their respective ratio Z(t) = E/I at a fixed position of the line caused by the continuous generation of reflections along the line.
Abstract: The conventional traveling-wave technique is extended to nonuniform lines by attributing distributed reflection and refraction coefficients to each point on the line. Analytical expressions are derived giving the variations in voltage and current wave fronts as they travel along a nonuniform line as well as variations in the voltage and current and their respective ratio Z(t) = E/I at a fixed position of the line caused by the continuous generation of reflections along the line. It is shown that the ratio Z(t), representing the so-called transient surge impedance of a given position of a nonuniform line, depends not only on time and the function expressing the conventional surge impedance of the line but also on the shape of the current wave, a fact which considerably reduces the usefulness of Z(t) in solving nonuniform line problems.
47 citations
01 Apr 1957-Transactions of The American Institute of Electrical Engineers. Part Iii: Power Apparatus and Systems
35 citations
TL;DR: In this paper, the analysis of electromagnetic transients on non-uniform lines is addressed with special attention paid to those transients relevant to power networks, and the applicability of a proposed s-domain, distributed parameter direct-simulation technique is demonstrated.
Abstract: The analysis of electromagnetic transients on nonuniform lines is addressed with special attention paid to those transients relevant to power networks. Traveling-wave and time-domain solutions are discussed, and the applicability of a proposed s-domain, distributed parameter direct-simulation technique is demonstrated. It is shown that this approach yields exact solutions in cases where the characteristic impedance at any line point can be represented by some analytic function of the coordinate of that point. Two examples of this are discussed. Comparisons between the other techniques and the advantages and limitations of the suggested technique are given. >
32 citations