Results 1 to 10 of about 1,486,491 (293)

Ground Potential Rise and Transient Response of the Grounding Grid Based on the Triggered Lightning

应用气象学报, 2020
It is extremely dangerous of ground grid potentials which significantly rise when the lightning currents are flowing through the grid. A statistical analysis on 39 return-strokes, 10 M-components and the ground potential rise (GPR) caused by them based ...
Yan Xu, Zhang Yijun, Du Sai, Chen Shaodong, Lü Weitao   +4 more
doaj   +2 more sources

Fraction I of Whey Protein Hydrolysates Improves Lipid Stability and Water Retention in Ground Pork During Freeze–Thaw Cycles [PDF]

Foods
This study investigated the potential of Fraction I (FI,
Yifan Yin, Yina Yin, Jia Li, Haoyu Lv, Xuefeng Tang, Chao Wang, Qingtian Dong   +6 more
doaj   +2 more sources

Comparison of Grounding Grid Parameters Between Copper and Galvanized Flat Steel [PDF]

E3S Web of Conferences, 2021
In the intelligent substation, the shell of the secondary equipment is connected to the ground grid locally. When the short circuit fault current is injected into the grounding grid to cause the ground potential rise, the potential difference between the
Yu Yue, Li Yanjun, Wang Dehong, Du Rongtian, Jiao Chongqing, Sun Jiwei   +5 more
doaj   +1 more source

Study on safety operation of medium voltage distribution network [PDF]

E3S Web of Conferences, 2021
Aiming at the problem of safe operation in the medium voltage distribution network with neutral point grounding through small resistance, the distribution network model was built, and on this basis, MW-level photovoltaic (PV) system, doubly fed Induction
Chen Xiaofang, Chen Li’an, Wang Dong, Chen Qihao   +3 more
doaj   +1 more source

Transient analysis of power transmission towers above lossy ground with frequency dependent electrical parameters considering the water content of soil

e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023
Adequate soil modeling is fundamental to assessing the grounding impedance of the grounding system and the transient responses in power systems. This paper aims to investigate three soil models with electrical parameters varying with frequency and water ...
Walter Luiz Manzi de Azevedo, Anderson Ricardo Justo de Araújo, Jaimis Sajid Leon Colqui, José Pissolato Filho, Behzad Kordi   +4 more
doaj   +1 more source

Modelagem computacional da resposta transitória de sistemas de aterramento por meio de circuitos equivalentes

Tecnología en Marcha, 2021
De modo a viabilizar a modelagem de sistemas de aterramento em estudos sistêmicos e de cálculo de transitórios e aumentar a exatidão e confiabilidade dos modelos utilizados, circuitos equivalentes devem ser estudados de modo a possibilitar a ...
Arthur Francisco Andrade, Edson Guedes da Costa, George Rossany Soares de Lira, Marconni Freitas Barroso Ribeiro Gonçalves   +3 more
doaj   +1 more source

Study of Atmospheric Discharge Effects in Distribution Networks with a Novel Residential Buildings Protection Approach [PDF]

Advances in Engineering and Intelligence Systems, 2023
Lightning-induced overvoltage poses a significant threat to electrical equipment and building structures. This study aims to comprehensively investigate lightning overvoltage in low voltage distribution lines under different scenarios, including ...
Meisam Karami, Yazdan Ashgevari
doaj   +1 more source

Investigating the Effect of Several Model Configurations on the Transient Response of Gas-Insulated Substation during Fault Events Using an Electromagnetic Field Theory Approach

Energies, 2020
Assessment of very fast transient overvoltage (VFTO) requires good knowledge of the behavior of gas-insulated substation when subjected to very high frequencies.
Muresan Alexandru, Levente Czumbil, Roberto Andolfato, Hassan Nouri, Dan Doru Micu   +4 more
doaj   +1 more source

Measurement and analysis of impulse grounding impedance of tower grounding device subjected to artificial lightning M‐component

IET Generation, Transmission & Distribution, 2023
The impulse grounding impedance of tower grounding device is one of the important factors in the lightning protection evaluation of transmission line. The impulse characteristic test of the actual tower grounding device under lightning was rarely carried
Yi Zhang, Hansheng Cai, Ruihan Qi, Taishan Hu, Lei Jia, Gang Liu, Yongcong Wu, Shangmao Hu   +7 more
doaj   +1 more source

A New Grounding Resistance Reduction Method for Wind Turbines by Grounding Grid Connection in Limited Areas

Frontiers in Energy Research, 2022
Restricted by cultivated land vegetation, road construction, and land acquisition compensation costs, the grounding electrode extension method is not applicable for grounding resistance reduction of some wind turbines in limited areas.
Yuanchao Hu, Zhixiang Liu, Tao Huang, Yunzhu An, Wentao Shen, Shangmao Hu, Chenghui Ma, Bingchen An, Dan Chen   +8 more
doaj   +1 more source