Study on spark discharge characters of soil under lightning impulse

Lin, Cheng; Kong, Zhizhan; Wang, Sen; Qi, Weidong; Li, Zhizhong; Pu, Lu; Wu, Jingfeng; Jin, Li

doi:10.1109/icd.2016.7547817

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…According to the practical structure of soil, it is equivalent to a porous material with different pore sizes randomly distributed as shown in the Fig. 1 below [5]. A proper modeling of this porous structure and its solid skeleton provides solution to the conductivity and breakdown characteristics of soil down to its ionization phenomena as this accounts for the microscopic layering of materials present in the soil level rather than the lump macroscopic model generally adopted as recommended by the CIGRE and the IEC 62305-1 standards [1].…”

Section: A Empirical Soil Impedance Variationmentioning

confidence: 99%

Modeling Soil Electrical Conductivity Under Impulse Discharge for Electrical Ground System

Fajingbesi¹,

Midi²,

Yusoff³

et al. 2018

Eighth International Conference on Advances in Computing, Electronics and Electrical Technology - CEET 2018

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Soil electrical conductivity play an essential role in proper grounding system design for dissipation of static and dynamic electric charge. However, soil properties such as pH, moisture and nutrients causes' non-linear variation in the soil electrical conductivity. This non-linear soil impedance phenomena directly affect electrical modeling of soil characteristics for efficient grounding system design. In this paper, the electrical dependency of soil properties on overall impedance have been investigated and used to formulate a soil impedance electrical circuit equation model through simulation and empirical methods. Electrical conductivity for samples of 30kg of soil with varying properties within at a moisture range of 14%-26% where injected with impulse discharge and the corresponding plot where fitted with electrical circuit simulation until a proper fit was achieved. The result shows that soil electrical impedance can be modeled with a complex circuit having both capacitive, resistive and inductive elements.

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Section: A Empirical Soil Impedance Variationmentioning

confidence: 99%

Modeling Soil Electrical Conductivity Under Impulse Discharge for Electrical Ground System

Fajingbesi¹,

Midi²,

Yusoff³

et al. 2018

Eighth International Conference on Advances in Computing, Electronics and Electrical Technology - CEET 2018

View full text Add to dashboard Cite

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Induced Current Distribution in 3D Soil Model as Lightning Impulse Discharge Strike Earth Surface

Fajingbesi

Midi

Elsheikh

et al. 2019

2019 9th International Conference on Power and Energy Systems (ICPES)

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Discharge current distribution generated as a lightning strike traverse from the atmosphere into a soil surface and below with varying conductivity were investigated using a laboratory-size electrode configuration system consisting of a point discharge electrode and nine under-soil grounding electrodes. Discharge emission and the electric potential of the soil were with significant change upon slight variation in soil conductivity across the surface and along with an increase in depth. Non-linear degradation phenomena in the soil conductivity also occur after a subsequent discharge of lightning strike indicating a breakdown of soil properties. The results of a numerical model in COMSOL

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Study on spark discharge characters of soil under lightning impulse

Cited by 2 publications

References 6 publications

Modeling Soil Electrical Conductivity Under Impulse Discharge for Electrical Ground System

Modeling Soil Electrical Conductivity Under Impulse Discharge for Electrical Ground System

Induced Current Distribution in 3D Soil Model as Lightning Impulse Discharge Strike Earth Surface

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