Results 1 to 10 of about 2,596 (162)
IET Cyber-Physical Systems, 2023 In order to accurately extract the fault features of arc high impedance grounding of low‐voltage distribution lines and judge the fault feature types of arc high impedance grounding of low‐voltage distribution lines, a fault feature extraction method for
Jing Sun
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The Grounding Impedance Calculation of Large Steel Grounding Grid
Energy Procedia, 2012 AbstractSteel is widely used as grounding material in China. The resistivity and permeability of steel are higher than those of copper. If a grounding grid is very large, it is a problem for steel grounding grid to have great potential difference within the grounding grid.
Zhiwei, Lu, Zhao, Zhang
exaly +2 more sources
Imaging the Corrosion in Grounding Grid Branch with Inner-Source Electrical Impedance Tomography
Energies, 2018 The corrosion diagnosis of grounding grid can locate the corroded branches and provide guidance for the maintenance and repair of the grounding grid.
Xing Li +4 more
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A novel approach for high impedance fault detection in resonant grounding systems based on statistical characteristics [PDF]
Scientific ReportsHigh impedance faults (HIF) in the resonant grounding system of distribution networks pose significant challenges for traditional protection devices, which often fail to detect and eliminate these faults promptly. The difficulty in setting an appropriate
Qinglin Meng +4 more
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Grounding system impedance: Range of frequency linearity [PDF]
Tehnika, 2021 The measurement of grounding system impedance of in-service power facilities is a very complex issue since the power system frequency interference and harmonic frequencies may adversely affect the measurement.
Kostić Vojin I.
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Modeling of different tower grounding systems using hybrid continuous circuit-trapezoidal integration method [PDF]
Serbian Journal of Electrical Engineering, 2021 In order to protect the transmission lines against lightning strikes, it is important to investigate the tower grounding system. In this paper, a recent method called hybrid continuous circuit-trapezoidal integration method is used to calculate ...
Asadpourahmadchali Mohammadbagher +2 more
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Influence of lightning current surge shape and peak value on grounding parameters [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021 Groundings are necessary parts included in lightning and shock protection. In the case of a surge current, high current phenomena are observed inside the grounding. They are result of the electrical discharges around the electrode when the critical field
Artur Łukaszewski, Łukasz Nogal
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IET Generation, Transmission & Distribution, 2023 The impulse grounding impedance of tower grounding device is one of the important factors in the lightning protection evaluation of transmission line. The impulse characteristic test of the actual tower grounding device under lightning was rarely carried
Yi Zhang +7 more
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Study of the high-frequency characteristics of grounding materials [PDF]
E3S Web of Conferences, 2023 Long-term safe and stable grounding system is the fundamental guarantee to maintain the stable operation of equipment and ensure the safety of staff. This paper investigates the high-frequency characteristics of several common grounding materials. Due to
Liu Zhuoran +5 more
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Evaluation principle and method of horizontal grounding electrode based on time‐varying impedance
IET Science, Measurement & Technology, 2021 The length of the horizontal grounding electrode is usually extended to decrease the impulse grounding resistance. In this paper, the mechanism for influencing the effective length is revealed by studying the dispersal process of a horizontal electrode ...
Xiaobin Cao +5 more
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