Results 261 to 270 of about 1,028,893 (322)
Some of the next articles are maybe not open access.
IEEE transactions on industry applications, 2020
High-frequency current injection-based protection is widely used for fault detection of a grounding electrode line in high-voltage direct current (HVdc) system.
Yufei Teng, Zhenyuan Zhang, Xiaopeng Li
semanticscholar +1 more source
High-frequency current injection-based protection is widely used for fault detection of a grounding electrode line in high-voltage direct current (HVdc) system.
Yufei Teng, Zhenyuan Zhang, Xiaopeng Li
semanticscholar +1 more source
Lightning surge response of ground electrodes
IEEE Transactions on Power Delivery, 1989Experimental and analytical evidence shows that lighning surge currents ionize the air in the soil. This ionization process tends to increase the contact area of the electrode with surrounding material. The larger area results in lower resistance and less voltage stress per unit current.
William A. Chisholm, Wasyl Janischewskyj
openaire +1 more source
Measures to Solve the Effect of HVDC Grounding Electrode Current on Metal Pipelines
2020 4th International Conference on HVDC (HVDC), 2020The DC current injected into the earth from the grounding electrodes of HVDC system could flow into the oil and gas pipelines through their grounding, lead to high pipe-to-soil potential.
Y. Liao +5 more
semanticscholar +1 more source
Research on the influence factors of lightning overvoltages of UHVDC grounding electrode lines
Workshop on Automated Control for Datacenters and Clouds, 2020At present, the insulation design of the grounding electrode line is mainly based on 《the technical code for design of HVDC earth return operation system》 issued in 2014.
L. Zhang, W. Shi, Tao Lei, Y. Yin, T. Lu
semanticscholar +1 more source
Impulse characterization of ground electrodes
2014 International Conference on Lightning Protection (ICLP), 2014In this paper, an analysis of the experimental results on the impulse behaviour of grounding electrodes is presented. The parameters used for analyzing transient performance are reviewed and differences highlighted based on test data. The analysis is extended to (i) quantify the effect of impulse shape, (ii) quantify the effect of electrode length ...
N. Harid +4 more
openaire +1 more source
Grounding/earthing electrode studies. 2
Proceedings of Industrial and Commercial Power Systems Conference, 2002The paper details the effort to determine the adequacy of various methods of grounding/earthing electrodes installed in the alkaline, highly mineralized soil of the Las Vegas, Nevada area The grounding electrode testing program outlined has been prepared to address a number of questions relating to grounding [earthing] electrodes and soil conditions in
R.S. Howard, D.W. Zipse
openaire +1 more source
IEEE International Conference on High Voltage Engineering and Application, 2020
Reducing the transient grounding impedance of the grounding device is an important measure for lightning protection. However, due to the inductive reactance of the grounding electrode, the transient grounding impedance is usually very high.
Zhuoran Liu +5 more
semanticscholar +1 more source
Reducing the transient grounding impedance of the grounding device is an important measure for lightning protection. However, due to the inductive reactance of the grounding electrode, the transient grounding impedance is usually very high.
Zhuoran Liu +5 more
semanticscholar +1 more source
IEEE Transactions on Power Delivery
The HVDC project is the backbone of new energy power transmission in the new power system and the key technology to realize the “double carbon” goal. When the HVDC system uses the earth as the loop path, DC current from the grounding electrode will be ...
Xiaobo Meng +3 more
semanticscholar +1 more source
The HVDC project is the backbone of new energy power transmission in the new power system and the key technology to realize the “double carbon” goal. When the HVDC system uses the earth as the loop path, DC current from the grounding electrode will be ...
Xiaobo Meng +3 more
semanticscholar +1 more source
Performance Testing and Analysis of HVDC Deep-well Grounding Electrode
IEEE International Conference on High Voltage Engineering and Application, 2020As an important part of the HVDC project, the grounding electrode provides a path for the ground current and unbalanced current. Shallow-buried grounding electrode covers a large area, has few optional pole sites, and is difficult to select, especially ...
Shangmao Hu +5 more
semanticscholar +1 more source
Step Voltage Calculation Above the Horizontal Grounding Electrode
2024 9th International Conference on Smart and Sustainable Technologies (SpliTech)The paper deals with the step voltage calculation for the case of the simple grounding system (horizontal grounding electrode) injected with the fault current.
V. Doric, D. Poljak, Ljubomir Hrboka
semanticscholar +1 more source