Analysis and Mitigation of Ground Grid Lightning Potential Rise

Taher, Ahmed A.; Said, Abdelrahman; Eliyan, Tamer; Hafez, Abdelsalam

doi:10.1007/s42341-020-00186-z

Cited by 6 publications

(7 citation statements)

References 10 publications

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“…Tabrani , et al, (2013) sistem pentanahan menara telekomunikasi batang tunggal vertikal dan batang horizontal dan kombinasi model vertikal-horizontal dimodelkan, kemudian di simulasaikan menggunakan MATLAB/SIMULINK untuk mendapatkan tegangan, arus dan nilai impedansi disekitar elektroda pentanahan. Taher, et al, (2020) melakukan simulasi ground grid dan pentanahan rod pada menara yang disambar petir dengan menggunakan ATP-EMTP, untuk mengurangi tegangan induksi pada tanah. Panjang elektroda pentanahan yang meningkat dan luas elektroda grid yang meningkat dapat menurunkan tegangan induksi pada tanah.…”

Section: Pendahuluanunclassified

Analisis Area Perlindungan Sistem Proteksi Petir Pada Gedung Dengan Simulasi Penempatan Dan Jumlah Finial

Seniari,

Supriyatna,

Natsir

et al. 2024

JAI

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The theory and application of external lightning protection systems for buildings are not included in the curriculum of the Electrical Engineering Department. Instead, this material is introduced to students through skill training outside regular class schedules, with a focus on components of external lightning protection systems such as finials, down conductors, and grounding. The obligation to install lightning protection systems on buildings is mandated by Law No. 28 of 2002 and Government Regulation No. 36 of 2005. Protection from lightning requires precise planning to be effective in safeguarding buildings. Analysis of lightning strike phenomena and their consequences can be conducted by applying theoretical principles, such as electric fields, magnetic fields, induction voltage, and various theorems related to lightning strike phenomena. Students are provided with an understanding of the concept of lightning strikes, the potential dangers, and the damage they can cause to buildings, living beings, and electronic equipment both inside and outside the building that is affected by lightning strikes. In this simulation, each group is given images of buildings with varying roof shapes and sizes. The buildings are equipped with external lightning protection systems, including the number and placement of finials on the roof, which are then simulated. The effectiveness of the finials placed in these locations is tested to analyze the extent of protection, to ensure that the building is protected from the dangers of lightning strikes. A total of 40 students participated in this activity, divided into 8 groups. Five groups successfully simulated the installation of finials to achieve an effective level of protection against lightning strikes, while the remaining three groups could only determine the extent of the protection area without being able to plan the installation efficiently. This training provides a benefit by enhancing the knowledge and skills of the students. The students' enthusiasm is reflected in active discussions and question-and-answer sessions that contribute to problem-solving.

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Section: Pendahuluanunclassified

Analisis Area Perlindungan Sistem Proteksi Petir Pada Gedung Dengan Simulasi Penempatan Dan Jumlah Finial

Seniari,

Supriyatna,

Natsir

et al. 2024

JAI

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“…Once both Equation (19) and Equation ( 20) are taken into Equation ( 16) with the consideration of incident and reflected overpressure equations, the peak reflected wave overpressure is obtained as Equations ( 20):…”

Section: B Overpressure Reflection Mechanismmentioning

confidence: 99%

“…Studies have shown that a ground potential rise of 3.0 V will end up with a range of more than 4.0 km affect, and higher grounding resistance increases the range of influence of the grounding pole on surrounding facilities [5]. The ground potential rise caused by lightning strike may have wider impact area, which may have influence on adjacent lines and building facilities and damage home appliances as an irreversible effect [9], [19].…”

Section: Introductionmentioning

confidence: 99%

Mechanism Analysis and Multiphysics Validation of Lightning Attenuation in Constrained Space

Wang

et al. 2022

IEEE Access

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The problem of resistance reduction has always been the key and difficult point of lightning protection. However, the problem of reducing the grounding resistance efficiently has not been solved. A method is introduced in this paper to solve this problem from the lightning current attenuation. The lightning discharge shock wave mechanism, shock overpressure reflection mechanism, and arc truncation mechanism are included to theoretically analyze the lightning current attenuation mechanism. The overpressure of the lightning discharge is much higher than the cut-off arc radial tolerance pressure, which contributes to the temporarily closing of discharge channel. Moreover, a lightning discharge model is established in COMSOL to simulate the process of discharge in lightning current. The results show that the pressure in the tube reaches up to 4×10 8 Pa rapidly, and the velocity in the mouth of the tube could reach as high as 4200 m/s. Finally, the current attenuation experiments are designed to validate the lightning current attenuation effect. The results show that the current is attenuated by the action of the prototype, the amplitude of the impulse current decreased from 66.95 kA to 35.10 kA, and the steepness of the impulse current decreased from 18.49 kA/µs to 4.14 kA/µs. All of the results show that this method could efficiently attenuate lightning currents. INDEX TERMSGrounding resistance, lightning current, lightning protection, current attenuation. YANG LU received the B.S. degree in electrical engineering and its automation from Jiangsu University, China, in 2020. He is currently pursuing the master's degree with Guangxi University, Nanning, China. His research interests include high voltage technology and modern lightning protection technology. JUFENG WANG received the M.Sc. and Ph.D. degrees in high voltage engineering from Wuhan

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“…As shown in [5], the effective inductance of long grounding is one-third of the grounding grid's total inductance, then L2 should be modified to L2/3 in (14). The impulse impedance is then identified as in [16] and 3 show the applied current waveforms and the output voltage on the square and rectangular grids with a similar area.…”

Section: Grounding System Modelmentioning

confidence: 99%

“…Some other approaches are analytical based on the circuit theory approach [12], which is based on replacing all conductor elements, including the lightning paths, with an equivalent electrical network. The circuit theory is a fast and straightforward calculation [13,14]. The network analysis leads directly to the results in terms of currents and voltages for all interest points.…”

Section: Introductionmentioning

confidence: 99%

Transient impedance of grounding system with impulse superimposed sinewave

Ghoneim¹,

El-Morshedy²,

Amer³

2021

ENPESJ

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Investigating the transient performance of grounding systems subject to lightning (impulse or impulse superimposed sinewave) is valuable for protecting the power system and maintaining the system operation. In this work, the grounding system's impedance is computed when an impulse superimposed sinewave is applied to the grounding grid's proposed lumped circuit and grounding system can be simulated as an inductance in series with resistance, and all of them are in parallel with capacitance based on Thione's assumption. Several variables were investigated to study their effects on the grounding system's behavior. The variables were the soil resistivity, soil permittivity, main wire length, grid conductor radius, grid side length, grid configurationand its mesh number. The grounding system configuration varied between square and rectangular shapes, which connects to the protecting rod via the main wire conductor. A 3.69 kA peak of impulse current was applied to avoid soil ionization. The results indicated the performance of the grounding system when subjecting to impulse current.

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Analysis and Mitigation of Ground Grid Lightning Potential Rise

Cited by 6 publications

References 10 publications

Analisis Area Perlindungan Sistem Proteksi Petir Pada Gedung Dengan Simulasi Penempatan Dan Jumlah Finial

Analisis Area Perlindungan Sistem Proteksi Petir Pada Gedung Dengan Simulasi Penempatan Dan Jumlah Finial

Mechanism Analysis and Multiphysics Validation of Lightning Attenuation in Constrained Space

Transient impedance of grounding system with impulse superimposed sinewave

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