Results 271 to 280 of about 1,028,893 (322)

Research on Distribution Characteristics of Earth Potential of Grounding Electrode for Transmission Line Tower

IEEE International Conference on High Voltage Engineering and Application, 2020
In order to study the transient characteristics and distribution of earth potential of the grounding device of the transmission tower when lightning strikes the transmission line, the field measurement of the high-voltage transmission towers selected in ...
Wei Li, Donghui Luo, Sen Wang, Zhizhong Li, Xuming Wang, Xiaoyue Chen   +5 more
semanticscholar   +1 more source

Modelling of a Grounding Electrode

IEEE Transactions on Power Apparatus and Systems, 1973
An experimental modelling technique of a grounding electrode in non-homogenous soil is presented, and the experimental results obtained are compared with theoretical figures computed from known analytical methods.(1,2) This technique is suitable for dc or ac testing of a grounding electrode.
Dinkar Mukhedkar, Yvon Gervais, Jean-paul DeJean   +2 more
openaire   +1 more source

HVDC Ground Electrode Heat Dissipation

IEEE Power Engineering Review, 1987
The temperature distribution in the soil surrounding High Voltage Direct Current (HVDC) ground electrodes is determined by using a finite-difference method. This, commonly used numerical method of solution, was selected due to its practicability in obtaining engineering solutions involving both complex ground electrode geometries and boundary ...
H. Greiss, B. L. Allen, P. J. Lagace, D. Mukhedkar   +3 more
openaire   +1 more source

Ground-Free ECG Recording with Two Electrodes

IEEE Transactions on Biomedical Engineering, 1980
ECG recordings normally use three electrodes?two for the differential inputs of the ECG amplifier and the third for ground. We analyze those situations where the ground electrode can be eliminated. We propose a model for the source of electrical interference and determine various parameter values.
N V, Thakor, J G, Webster
openaire   +2 more sources

Analytical Modelling of Grounding Electrodes Transient Behavior

IEEE Transactions on Power Apparatus and Systems, 1984
This paper presents the results of analytical and numerical investigations to evaluate the impulse performance of grounding electrodes. Practical grounding electrodes used-for the lightning protection of power and industrigl systems are analyzed through, a comprehensive computer program developed for this purpose.
R. Velazquez, D. Mukhedkar
openaire   +1 more source

Characteristics of Grounding Impedances of Carbon Compound Grounding Electrodes

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2011
This paper presents characteristics of frequency-dependent grounding impedance and transient grounding impedance for the carbon compound grounding electrode used in the installation of computerized electronic equipment and lightning protection system.
Kang-Soo Lee, Bok-Hee Lee
openaire   +1 more source

Effective length of horizontal grounding electrode

2008 16th International Conference on Software, Telecommunications and Computer Networks, 2008
In this paper, the influences of the length of grounding electrodes on the lightning transient characteristic were analyzed. The effect of effective length of grounding electrodes is demonstrated for 2.6/50 µ s and 4.5/50 µ s time duration of the wavefront. The effect of the soil ionization has been taken into account by dynamic change of the
Jurić-Grgić, Ivica, Lucić, Rino, Ljubičić, Dragan   +2 more
openaire   +3 more sources

An Improved Grounding Electrode Line Protection for High-Voltage Direct Current System Based on High Frequency Signal Injection

Annual Meeting of the IEEE Industry Applications Society, 2019
In order to increase the reliability of the protection of the grounding electrode line in high-voltage direct current system (HVDC), an improved high frequency current signal injection based protection is proposed.
Yufei Teng, Zhenyuan Zhang, Xiaopeng Li
semanticscholar   +1 more source

Analysis of Horizontal Grounding Electrode in Transmission Line Approach

International Conference on Communication and Electronics Systems, 2019
Understanding impulse response of a buried electrode helps for designing a better grounding system under the situations of surges. In this paper, the analysis of lightning impulse current has been carried on horizontal grounding electrode by varying its ...
Koppakula Nagarjuna, K. Chandrasekaran
semanticscholar   +1 more source

Recognition of electrocardiographic electrode misplacements involving the ground (right leg) electrode

The American Journal of Cardiology, 1993
Abstract Accurate electrocardiographic (ECG) interpretation by computer or manually requires that the electrocardiogram be recorded with all electrodes in proper positions. All possible electrode placement errors involving the active limb electrodes (right and left arm, and left leg) have been described.
W K, Haisty, O, Pahlm, L, Edenbrandt, K, Newman   +3 more
openaire   +2 more sources