Transient Voltage Pulse Propagation on Transmission Lines with Multiple Reflections
Aho, Katherine
Aho, Katherine
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Abstract
Transients are pulses of voltage or current that occur within a very short time duration and can propagate over long distances. Transient pulses can be utilized on transmission lines to identify the location of line damages or changes in surrounding media. One common usage of this phenomena is time domain reflectometry analysis which is often used to identify moisture content in soil. The identification of material changes is complicated by transmission line losses, such as attenuation, dispersion, and frequency-dependent circuit parameters. In this work, a transient voltage pulse with a trapezoidal envelope is propagated along a lossy and dispersive transmission line. The time delay between initial and reflected pulses is calculated to identify the locations of potential damage. Multiple interfaces on the transmission line with impedance changes are considered.
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Date
2019-01-01