Results 261 to 270 of about 226,993 (288)

Direct Current Ground Electrode Behavior

IEEE Transactions on Power Apparatus and Systems, 1966
The conducting of moderately high direct current through earth between variously sized electrodes installed in different types of soil has provided test data which, while in general agreement with expectations [1]-[3], places much more emphasis on the electrode-to-earth contact area than had been necessary in past designs, which were primarily used for
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Grounding Characteristic Analysis of Plate Electrodes

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2007
In this study, an experiment on the efficient construction method of plate electrodes, the influence of electric potential interference in plate electrodes, and building foundations were explored. The experimental result of the electric potential measurement was taken on the basis of the direction of movement and the condition in which the plate ...
Sung-Sam Kim, Ju-Chan Kim, Hee-Seog Koh
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Design Considerations of HVDC Grounding Electrodes

2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005
Design considerations of HVDC grounding electrode are discussed in this paper. The main topics covered in this paper are: (1) How incorrect soil resistivity measurements lead to design flaws; (2) How different types of grounding electrodes influence the leakage current distribution; (3) How different soil structures influence the grounding electrode ...
null Jinxi Ma, F.P. Dawalibi, W. Ruan
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Electric Field of Horizontal Grounding Electrodes

2019 International Symposium on Lightning Protection (XV SIPDA), 2019
In this paper the electric field spatial distribution in the soil, generated by electric currents in horizontal electrodes, is calculated and analyzed. Two soil models are adopted; one considering constant electrical parameters and another that considers its variations with frequency. Two values of low-frequency soil resistivity are considered: one low
Marco Aurélio O. Schroeder, Mana Teresa Correia de Barros, Antonio C. S. Lima, Rodolfo A. R. Moura, Pedro Henrique Nascimento Vieira   +4 more
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Impulse performance of ground electrodes for increasing number of rod electrodes

2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE), 2020
This paper presents experimental results of three electrode's configurations, 1-rod, 2-rod and 3-rod electrodes. A high impulse current generator is employed to inject different magnitudes of current into these rod electrodes. The effect of increasing number of rod electrodes on the voltage and current waveforms, time to peak current, discharge time ...
Abdul Wali Abdul Ali, Nurul Nadia Ahmad, Normiza Mohamad Nor   +2 more
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Measurement of chemical ground electrode performance

2012 6th Asia-Pacific Conference on Environmental Electromagnetics (CEEM), 2012
We can reduce the grounding resistance of grounding object by reducing the resistivity of the soil, increasing the size of the area of ground, selecting the appropriate shape of the grounding (depth of the vertical ground) and increasing the number of vertical ground, etc. However, when the spot area is limited and soil resistivity is high, traditional
null Tang Zhaosheng, null Gao Cheng, null Zhao Zhongyi, null Shi Zhenhua, null Li Yanxin   +4 more
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Resistance calculation of interconnected grounding electrodes

IEEE Transactions on Power Apparatus and Systems, 1977
The calculation of earth resistances by the average potential method has proved to give accurate results. Various publications [1], [2] shows that current distribution in the electrode has little effect on the calculated result assuming uniform current distribution. The above method however, requires that integration be carried along the electrode path
F. Dawalibi, D. Mukhedkar
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Grounding electrodes and grounding devices. Regulatory requirements

Автоматика, связь, информатика
Одной из основных проблем при проектировании заземляющих устройств (ЗУ) в грунтах с высоким удельным сопротивлением является создание низкоомного заземляющего устройства. В последнее время широкое распространение получили так называемые активные (химические) заземляющие электроды, обеспечивающие искусственное снижение удельного сопротивления грунта в ...
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A TLM‐Based Surge Analysis of Grounding Electrodes

Electrical Engineering in Japan, 2012
SUMMARYIn this paper, representations of a perfectly conducting thin wire and an imperfectly conducting medium in the transmission line modeling (TLM) calculation are briefly explained. Then, the method is applied to analyzing surge responses of a vertical parallelepiped grounding electrode and a square‐loop grounding electrode.
Shinsuke Yuda, Yoshihiro Baba, Naoto Nagaoka, Akihiro Ametani   +3 more
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Suction Cup Ground and Reference Electrodes in Electrodiagnosis

Archives of Physical Medicine and Rehabilitation, 1989
An alternative to the taped-disc surface electrodes typically used during monopolar and concentric needle electromyographic studies has been investigated. The use of suction cup surface electrodes in place of the taped metal disc surface electrodes increases patient and operator safety and enhances patient comfort and operator efficiency. A two-channel
J M, Downey, P V, Belandres, M, Di Benedetto   +2 more
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