Generalized traveling current source return stroke model with current reflections and attenuation along the channel

Ignjatovic, Milan; Cvetić, Jovan; Pavlović, Dušan; Djuric, Radivoje; Ponjavic, Milan; Sumarac, Dragoslav; Trifkovic, Z.; Mijajlovic, N.; Heidler, F.

doi:10.1109/iclp.2014.6973150

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…Corona models in these studies were also in accordance with the experiments of corona discharges in coaxial geometry [10]. The new extended GTCS model with current reflections from the ground [11] has been applied to make these improvements possible. Effects observed in measurements [7], [8], regarding the existence of a positive overcompensated electric field, are explained herein.…”

Section: Introductionmentioning

confidence: 81%

“…This effect couldn't have been noted earlier, using other traveling-current-source (TCS) models without current reflections, such as the original TCS model described in [15], or any of later TCS models [17][18][19]. As stated above, the recently proposed extended GTCS model [11] with current reflections from the ground enabled the observed effect to be calculated.…”

Section: A New Corona Sheath Modelmentioning

confidence: 96%

“…In the extended GTCS model [11] the downward moving current pulse 0/d i is reflected from the ground generating the upward moving current pulse…”

Section: The Extended Gtcs Modelmentioning

confidence: 99%

See 2 more Smart Citations

Electric field close to lightning channel in the presence of current reflections from the ground

Tausanovic¹,

Ignjatovic²,

Cvetić³

et al. 2016

Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MedPower 2016)

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Appearance of an overcompensated positive electric field in most vertical field measurements performed very close to the channel core is explained using the extended generalized traveling current source (extended GTCS) return stroke model with current reflections from the ground. New effects in the corona sheath due to the reflection of current pulses have been noted and taken into account. The channel-base current is separated into two components. The first current component is fast and with a greater peak value, while the second component is slower and with a lower peak. We've analyzed a return stroke for which the channel-base current and the electric field waveform very close to the triggered lightning are measured simultaneously. A new charging function is calculated according to the extended GTCS model, as well as the value of the ground reflection coefficient for the analyzed stroke. On one hand, new results are obtained through calculations of the channel charging function. On the other, the calculated values of the ground reflection coefficient confirm the results reported in other independent studies performed in natural or laboratory conditions. Finally, the concept of the extended GTCS model, that takes into account current pulse reflections from the ground, is proved to be correct.

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Section: Introductionmentioning

confidence: 81%

Section: A New Corona Sheath Modelmentioning

confidence: 96%

See 1 more Smart Citation

Electric field close to lightning channel in the presence of current reflections from the ground

Tausanovic¹,

Ignjatovic²,

Cvetić³

et al. 2016

Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MedPower 2016)

Self Cite

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“…The return-stroke models described in [17], [18] are channel based current models. Paper [17] combines CG model and current dissipation (CD) model to create a return-stroke model that considers the reflections at ground level without incorporating current discontinuities of the returnstroke.…”

Section: Simulating Functionsmentioning

confidence: 99%

“…Furthermore, the proposed return-stroke model can be utilized to analyze the effect of ground conductivity on return stroke current and variations of return-stroke velocity along the channel. The losses and scattering during the current pulse propagation along the channel and current reflections at both ends of the channel are considered in the generalized traveling current source return-stroke model (GTCS), discussed in [18]. As described in [18], extended GTCS model is a generalized return-stroke model and "engineering" return stroke models are a special case of this extended GTCS model.…”

Section: Simulating Functionsmentioning

confidence: 99%

Recovery of valuable incompletely recorded CN tower lightning return stroke current derivative signals

Perera¹

2021

Preprint

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Lightning is a captivating natural phenomenon but indisputably terrifying. Therefore, lightning studies have played an essential role in establishing safety regulations to protect lives and infrastructures. Among the many simulating functions that were utilized in the past for modelling the lightning return-stroke current, Heidler and Pulse functions overcame certain limitations, including the time derivative discontinuities. Incompletely-recorded current derivative signals represent another challenge in lightning research. This thesis proposes a double-term Pulse function that could be investigated with the double-term Heidler function for modelling the lightning return-stroke current. The time derivative of both Pulse and Heidler functions have been used to simulate the current derivative signals recorded on June 10, 1996. Some of these return-stroke signals exceded the maximum set level. Consequently, the double-term simulating functions were used to recover a large incompletely recorded return-stroke current derivative signal. The R2 fitting factor was used to evaluate the quality of each fitting to determine which simulating function is better suited to model and recover valuable return-stroke current signals.

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Electric field close to lightning channel in the presence of current reflections from the ground

Cvetić¹,

Ignjatovic²,

Tausanovic³

et al. 2016

2016 33rd International Conference on Lightning Protection (ICLP)

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Generalized traveling current source return stroke model with current reflections and attenuation along the channel

Cited by 3 publications

References 8 publications

Electric field close to lightning channel in the presence of current reflections from the ground

Electric field close to lightning channel in the presence of current reflections from the ground

Recovery of valuable incompletely recorded CN tower lightning return stroke current derivative signals

Electric field close to lightning channel in the presence of current reflections from the ground

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