Results 11 to 20 of about 931,771 (301)
Drone-assisted time-varying magnetic field analysis for fault diagnosis in grounding grids. [PDF]
PLoS ONEGrounding grids are essential for ensuring the safety of power substations, but their performance can degrade due to corrosion, fractures, or other faults.
Aamir Qamar, Zahoor Uddin
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IEEE Access, 2019 This paper discusses the step and touch voltages, based on body resistance, in a grounding grid after a lightning strike at a 434-/21-kV substation. To ensure grounding grid safety, the maximum step and touch voltage should not exceed the safety criteria
Saeid Gholami Farkoush +5 more
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Advances and Challenges of Corrosion and Topology Detection of Grounding Grid
Applied Sciences, 2019 The grounding device plays performs the role of releasing a lightning current and a fault current in the power system, and the corrosion of the conductor will cause damage to the grounding body, which threatens the safe operation of the power system. The
Zhihong Fu +5 more
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Comparison of Grounding Grid Parameters Between Copper and Galvanized Flat Steel [PDF]
E3S Web of Conferences, 2021 In the intelligent substation, the shell of the secondary equipment is connected to the ground grid locally. When the short circuit fault current is injected into the grounding grid to cause the ground potential rise, the potential difference between the
Yu Yue +5 more
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CES Transactions on Electrical Machines and Systems, 2023 Magnetically coupled resonant technology is a novel method for solving the breakpoint locating of power grounding grid. But the method can only detect breakpoints of a single mesh grounding grid at present.
Weihua Chen +3 more
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Optimum pattern of grounding grid by using closed-form solution based on optimized results
Electrical Engineering, 2023 Finding the optimum conductor’s pattern for unequally spaced grounding grids can be achieved by using empirical formulas or optimization techniques. Empirical formulas give an approximate solution depending on human experience and never cover the entire ...
El‐Sayed M. El‐Refaie +3 more
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Grid-Ground Electrode in Two Layered Non-Homogeneous Ground
7th Symposium on Applied Electromagnetics SAEM`18: Conference Proceedings, 2019 In this paper, a procedure including using of the Green’s functions for a point source in multilayered media for the electric scalar potential and the Method of Moments-MoM for analyzing described problem is adopted. The approach provides generating Green’s function of the point source for arbitrary number of homogeneous layers. Also, it is possible to
Nenad Cvetkovic +3 more
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Research Advances of Soil Corrosion of Grounding Grids
Micromachines, 2021 A grounding grid plays the role of discharging current and balancing voltage to ensure the safety of the power system. However, soil corrosion can damage the grounding grid, which then can endanger the safe operation of power system.
Cheng Zhang +5 more
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Gong-kuang zidonghua, 2020 In view of problems of limited terrain, short effective dispersion length, and low resistance reduction efficiency in the extensional resistance reduction of the grounding grid of incoming line section of mine substation, a resistance reduction method ...
XIE Hongping +5 more
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Sukkur IBA Journal of Emerging Technologies, 2021 Configuration of Grounding Grid is required for all currently proposed Fault Diagnosing methods of Grounding Grid if the configuration is unknown then Grounding Grid Configuration detection techniques are applied and all of these latest techniques ...
Usman Zia Saleem +3 more
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