Results 11 to 20 of about 20,285 (246)

Computation of Lightning Current from Electric Field Based on Laplace Transform and Deconvolution Method

Energies, 2021
A method for computation of the lightning channel base current from the corresponding vertical component of lightning electric field was presented. The algorithm was developed by applying Laplace transform.
Grzegorz Karnas
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Research on Lightning Overvoltage Protection of Line-Adjacent Pipelines Based on Solid-State Decoupling

Applied Sciences, 2023
Existing transmission lines and pipelines are frequently crossed and erected in parallel, meaning that if lightning strikes a wire and causes insulator flashovers, the resulting lightning current will spread through the grounding of the tower where the ...
Wei Liu, Yuanchao Hu, Haipeng Tian, Zhipeng Jiang, Xiaole Su, Jie Xiong, Wei Su, Yi Wang   +7 more
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Relationship Between Current Characteristics of Rocket-triggered Lightning During Different Discharge Stages

应用气象学报, 2020
The research on rocket-triggered lightning has made great progress since 1967. Various parts of rocket-triggered lightning are studied, but differences between initial stages of different types of rocket-triggered lightning and the relevance on each part
Wang Jingxuan, Zhang Yang, Chen Zefang, Sun Xiubin, Fan Yanfeng, Zheng Dong, Fan Xiangpeng, Lü Weitao, Zhang Yijun   +8 more
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Electric Arc Recoil–A Novel Method for Reducing Lightning Strike Potential Difference for Transmission Line

IEEE Access, 2021
Increasing arc pressure by tens of times with fine pouring tube, a positive shock wave by the pouring arc entering the closed space of the thin tube (electric arc recoil wave).
Yanlei Wang, Yaojing Luo, Yuning Chen, Jufeng Wang, Yiyi Zhang   +4 more
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Simulation of Cloud-to-Ground Lightning Strikes to Wind Turbines Considering Polarity Effect Based on an Improved Stochastic Lightning Model

Atmosphere, 2023
The accurate determination of the annual lightning flash number to a wind turbine is essential for designing proper lightning protection measures. However, the method to assess the lightning risk of wind turbines recommended by the IEC is not associated ...
Xiaoyan Bian, Yong Wu, Qibin Zhou, Ruijiao Jiang, Yao Zhang, Lyuwen Chen, Qi Qi, Weitao Lyu   +7 more
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Fault Location of Lightning Strikes Using Residual Analysis Based on an Adaptive Kalman Filter

IEEE Access, 2019
Lightning strikes are the significant cause of transient, faults, and outages in electric power transmission and distribution systems. The double-exponential function is proposed to simulate the decaying part of the measured lightning current.
Yanhui Xi, Yonglin Cui, Xin Tang, Zewen Li, Xiangjun Zeng   +4 more
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Evaluation of lightning overvoltage at neutral point of HVDC converter transformer based on EMTP

Energy Reports, 2022
In order to ensure the safe and stable operation of high voltage direct current (HVDC) systems, this paper studies the lightning overvoltage at the neutral point of the HVDC converter transformer.
Zhe Hu, Yang Han, Ping Yang, Conling Wang, Amr S. Zalhaf   +4 more
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Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

Energies, 2022
High-voltage direct-current (HVDC) transmission systems are considered an outstanding solution due to high electrical losses emerging from long-distance transmission. However, HVDC transmission lines (TLs) are vulnerable to lightning strikes.
Amr S. Zalhaf, Ensheng Zhao, Yang Han, Ping Yang, Abdulrazak H. Almaliki, Reda M. H. Aly   +5 more
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BEHAVIOUR OF BACKFILL MATERIALS FOR ELECTRICAL GROUNDING SYSTEMS UNDER HIGH VOLTAGE CONDITIONS [PDF]

Journal of Engineering Science and Technology, 2015
Backfill materials like Bentonite and cement are effective in lowering grounding resistance of electrodes for a considerable period. During lightning, switching impulses and earth fault occurrences in medium and high voltage networks, the grounding ...
S. C. LIM, C. GOMES, M. Z. A. A. KADIR, G. NOURIRAD, Z. A. MALEK   +4 more
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Non-Contact Measurement and Polarity Discrimination-Based Identification Method for Direct Lightning Strokes

Energies, 2019
Direct lightning strokes account for a large proportion of line faults. Lightning faults can be classified into several kinds, and the corresponding protection methods differ.
Kaihua Jiang, Lin Du, Huan Chen, Feng Yang, Yubo Wang   +4 more
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