Model for prediction of characteristics of lightning breakdown channels in soil in the presence of a buried cable

Song, Zeqing; Raghuveer, M.R.; He, Jinliang

doi:10.1049/ip-gtd:20030580

Cited by 15 publications

(6 citation statements)

References 7 publications

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“…ground surface and ents. In the first e point, current is using ionisation of med to be E0 and n or ionization is (2) med that a streamer ce of soil and the this segment, it is less than the soil ctric field strength verage field ( E1 …”

Section: Fig2 Chang's Assumption Of Breakdown Pmentioning

confidence: 99%

“…Kanyakum studies. These areas have hug also are prone to lightning normally have alluvial soil ma and clay whose soil resistivity m [5,6].It is reported in [2], tha of 100-1000Ω-m, the critical br the range of 0.1-0.7 MV/m. In characteristics of southern co breakdown strength is assumed…”

Section: Fig2 Chang's Assumption Of Breakdown Pmentioning

confidence: 99%

“…Also streamers can form soil [1]. The ionization of the soil or st depends on the magnitude of lightning str properties [2]. The discharge channels may be certain period or may hit any nearby underg creating an overvoltage between sheath and Estimation and prediction of overvoltage cables due to lightning is important for opt protection system.…”

Section: Iintroductionmentioning

confidence: 99%

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Study of lightning phenomena on UG cables based on soil resistivity

Kumar

Das

2015

2015 International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)

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Lightning stroke has strong underground (UG) cables. Assessment of the on UG cables is important for optimal de system and to enhance the reliability of powe distribution. In this work, the effect of lightni studied based on the resistivity of the soil. An is used to estimate the magnitude of lightning strike the ground, depending on the resis Lightning performance and prediction model the maximum breakdown distance in the s current impacting the cable laid near to the strike. Also the over voltage developed betw and sheath is estimated. It is seen that, the ch soil strongly influences the lightning perfor breakdown distance, impacting current on c safe burial of cables in soil are affected by soil c

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Section: Fig2 Chang's Assumption Of Breakdown Pmentioning

confidence: 99%

Section: Fig2 Chang's Assumption Of Breakdown Pmentioning

confidence: 99%

Section: Iintroductionmentioning

confidence: 99%

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Study of lightning phenomena on UG cables based on soil resistivity

Kumar

Das

2015

2015 International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)

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“…This method was also used by many other researchers [10–12]. Song et al [13, 14] used conducting paper to trace the propagation channel of impulse currents, and proposed a method to predict the characteristics of lightning breakdown channels in soil. Liew et al .…”

Section: Introductionmentioning

confidence: 99%

Observation and analysis of the sparkover around grounding electrode under impulse current

Feng

Tong

et al. 2017

IET Generation, Transmission & Distribution

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“…Thus far, many researchers have realized extensive experiments in order to establish a model capable of describing the dynamic behavior of grounding electrode systems at high impulse voltages [2][3][4][5]. From many experimental and simulation results, it was concluded that the dynamic behavior of grounding systems at high impulse currents depends not only on the characteristics of soil ionization but also on the discharge mechanisms [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Discharge Characteristics in Soils Subjected to Lightning Impulse Voltages

Kim¹,

Yoo²,

Lee³

2016

Journal of Electrical Engineering and Technology

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-In this paper, we present experimental results of the soil discharge characteristics as a function of moisture content when a 1.2/50-㎲ lightning impulse voltage is applied. For this study, laboratory experiments were carried out based on factors affecting the transient behavior in soils. The electrical breakdown voltages in soils were measured for a 0-6% range of moisture content for sand and a 0 -4% range of moisture content for gravel. A test cell with semi-spherical electrodes buried face-to-face in the middle of a cylindrical container was used. The distance separating the electrodes is 100 mm. As a result, the time-lag to breakdown in soils decreases as the amplitude of applied voltage increases. The time-lag to initiation of ionization streamer is decreased, with an increase in the moisture content. However, the formative time-lag is rarely changed. The behavior of soil discharges depend not only on the type of soil and its moisture content but also on the amplitude of the impulse voltage. When the test voltage is applied repeatedly, electrical breakdown occurs along different discrete paths, leading radially away from the injected electrode. i.e., the fact that the ionization streamers propagate in different paths from shot to shot was observed.

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Model for prediction of characteristics of lightning breakdown channels in soil in the presence of a buried cable

Cited by 15 publications

References 7 publications

Study of lightning phenomena on UG cables based on soil resistivity

Study of lightning phenomena on UG cables based on soil resistivity

Observation and analysis of the sparkover around grounding electrode under impulse current

Discharge Characteristics in Soils Subjected to Lightning Impulse Voltages

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