Results 291 to 300 of about 1,028,893 (322)

DC Current Distribution in Both AC Power Grids and Pipelines Near HVDC Grounding Electrode Considering Their Interaction

IEEE Transactions on Power Delivery, 2019
The dc current injected into the earth from the grounding electrodes of an HVdc system could flow into the ac electric power grids and gas pipelines through their grounding points.
Bo Zhang, Fangyuan Cao, R. Zeng, Jinliang He, Xiaobo Meng, Y. Liao, Ruihai Li   +6 more
semanticscholar   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Regularity of Current Dispersal in Different Kinds of Grounding Electrode

IEEE International Conference on High Voltage Engineering and Application, 2018
This paper analyzes the regularity of ±800 kV HVDC grounding current dispersal in 3 common types of Grounding Electrodes by simulating the surface potential and current density.
Luo Hanwu, Zou Lekai, Yang Fan, M. Riaz, Cui Shigang, Gao Bing   +5 more
semanticscholar   +1 more source

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 ...
openaire   +1 more source

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
openaire   +1 more source

Experimental investigation on the electrospray counterflow flame in a small combustor with a porous media as the grounding electrode

Energy, 2023
Ningguang Chen, Y. Gan, Dunfeng Shi, Yanlai Luo, Zhengwei Jiang   +4 more
semanticscholar   +1 more source

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
openaire   +2 more sources

Effects of DC Ground Electrode on Converter Transformers

IEEE Power Engineering Review, 1989
DC transmission systems are normally equipped with a DC ground electrode for emergency or normal operation with or without ground return. In all cases, the DC ground stabilizes the DC voltage. During operation with ground return, a DC ground potential rise occurs at the DC ground electrode and DC voltage is transferred to the station ground.
A.P.S. Meliopoulos, G. Christoforidis
openaire   +1 more source

Impedance nature of long horizontal grounding electrode employing TLM

International Conference on Electrical Sciences and Technologies in Maghreb, 2018
This investigation is devoted to analyse the impedance behaviour of long horizontal grounding electrodes as function of frequency for several soil resistivity values.
S. Chiheb, O. Kherif, M. Teguar, A. Mekhaldi   +3 more
semanticscholar   +1 more source