Results 41 to 50 of about 931,771 (301)
电力工程技术The impact of electromagnetic interference on secondary systems in substations can be reduced by the installation of secondary equipotential grounding grid.
Zhiwei CAO +5 more
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Grounding System Cost Analysis Using Optimization Algorithms
Energies, 2018 In this study, the concept of grounding systems is related to the voltage tolerance of the human body (human body voltage tolerance safety value). The maximum touch voltage target and grounding resistance values are calculated in order to compute the ...
Jau-Woei Perng +2 more
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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
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International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
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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Determining of galvanically separated grounding grids and grounding systems
2000 10th Mediterranean Electrotechnical Conference. Information Technology and Electrotechnology for the Mediterranean Countries. Proceedings. MeleCon 2000 (Cat. No.00CH37099), 2005 A model for determination of galvanically separated grounding grids and grounding systems has been presented in this work. Determination of the above also means determination of the grounding resistances, the potentials of the grounding grids, currents of leading to earth from the separated electrodes, distribution of the potentials along the surface ...
Acevski, Nikola, Achkoski, Risto
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Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
International Journal of Electrical Power & Energy SystemsSubstation grounding grid is an important part of power system. The grounding grid corrosion (GGC) diagnosis plays an important role in ensuring the normal operation and personal safety of power equipment.
Xu Chu, Shaoshuai Yu, Letian Fu, Qi Liu
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Zhongguo dianli, 2021 Based on the influence of the receiving-end grid structure and the grounding electrode location on DC bias current, this paper analyzes the DC bias current (DCBC) level of the converter station and the adjacent AC substation in the typical connection ...
Lianguang LIU, Chenglian MA
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Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source