Results 101 to 110 of about 5,253 (287)

A TECHNIQUE OF MEASURING OF RESISTANCE OF A GROUNDING DEVICE

Electrical engineering & Electromechanics, 2016
Introduction. Measurement of resistance of the grounding device (GD) by means of a three-electrode system. This requires not only the right choice of installation locations of measuring electrodes, but also the determination of the point of zero ...
I.V. Nizhevskyi, V.I. Nizhevskyi
doaj   +1 more source

Controlled large-scale tests of practical grounding electrodes--part II: comparison of analytical and numerical predictions with experimental results [PDF]

, 2014
This paper presents tests carried out at an outdoor experimental facility, described in the companion Part 1 paper, to investigate the performance of practical grounding systems. Here, the results of low-voltage dc, ac, and impulse tests performed on rod
Harid, N., Lathi, D., Griffiths, H., Clark, D., Haddad, A., Ainsley, Alan, Guo, Dongsheng   +6 more
core   +1 more source

Toward Enhanced Inertial Sensing via Dynamically Soft Topological States in Piezoelectric Microacoustic Metamaterials

Advanced Functional Materials, EarlyView.
A piezoelectric microacoustic wave device exploiting topologically protected interface states with significantly higher dynamic compliance than Lamb or Rayleigh modes achieves record‐high out‐of‐plane particle velocities exceeding 51 m/s. These findings indicate that leveraging topological interface states can overcome key limitations of piezoelectric ...
Onurcan Kaya, Niccolò Scalise Pantuso, Marco Galli, Jacopo M. De Ponti, Tommaso Maggioli, Davide Pavesi, Siddhartha Ghosh, Attilio Frangi, Luca Colombo, Benyamin Davaji, Matteo Rinaldi, David Horsley, Cristian Cassella   +12 more
wiley   +1 more source

Transient Temperature Rise and Grounding Characteristics of Vertical DC Grounding Electrodes Considering Soil Electro-Thermal Coupling

Energies
The continuous current dissipation of direct current grounding electrodes generates intense Joule heat, causing severe soil moisture loss and localized thermal runaway. Traditional static models ignore the temperature-dependent nature of soil parameters,
Changzheng Deng, Zechuan Fan, Weiyi Li
doaj   +1 more source

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

Parallel processing applied to the design of concrete encased grounding electrodes [PDF]

, 2001
This work presents the authors investigation regarding the application of parallel processing to the design of grounding systems, comprising concrete encased electrodes.
Silveira, Humberto de Aquino, Murta Vale, María Helena, Visacro Filho, Silvério, Matsumoto Sato, Liria   +3 more
core   +2 more sources

Electrostatic‐Attraction‐Driven Self‐Assembled Graphene‐Disordered Rocksalt Composite Cathode for Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A non‐aqueous, solution‐based graphene‐wrapping strategy is shown to stabilize disordered rocksalt LMTOF cathodes without structural degradation. The graphene‐wrapped cathode suppresses oxygen loss and parasitic interfacial reactions, lowers impedance growth, and delivers improved cycling stability and rate capability compared with conventional ball ...
Venkata Sai Avvaru, Mateusz Zuba, Beth L. Armstrong, Shilong Wang, Minh X. Tran, Bernardine L. D. Rinkel, Finn Babbe, Harshita Lohani, Yanbao Fu, Isik Su Buyuker, Vincent Battaglia, Ozgenur Kahvecioglu, Robert Kostecki, Bryan D. McCloskey, Haegyeom Kim   +14 more
wiley   +1 more source

Effect of Optical Illumination on Bubble Nanodomains

Advanced Functional Materials, EarlyView.
Stable surface‐confined nanoscale bubble domains are created and manipulated in PMN‐PT single crystals. Under above‐bandgap illumination, these bubble nanodomains remain unchanged. However, upon illumination cessation, they rapidly expand to switch the entire crystal surface, due to the accumulation of a large reservoir of electrons at the crystal ...
Haoze Zhang, Anju Ahlawat, Richard F. Webster, Yunlong Sun, Dinesh Shukla, Danyang Wang, Jan Seidel, Alexei Gruverman, Pankaj Sharma   +8 more
wiley   +1 more source

Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage [PDF]

The distribution of renewable energy sources is geographically limited. In the process of long-distance transmission, the direct current flowing from a ground electrode into the ground will cause a higher step voltage, which will bring serious security ...
Shuang Qiu, Lingran Xi, Qi Xiong, Xiangyi Liu, Yanxin Li   +4 more
core   +1 more source

Design of Grounding Grid for Main Substations in High Soil Resistivity Areas Based on CDEGS Software

Chengshi guidao jiaotong yanjiu
Objective To address the difficulty of reducing the grounding resistance of main substations in high soil resistivity areas, it is necessary to study the design of grounding grids for main substations in such regions.
CAO Jianshe
doaj   +1 more source