Results 11 to 20 of about 749 (166)

Achievement of the best design for unequally spaced grounding grids [PDF]

Ain Shams Engineering Journal, 2015
The configuration of grounding grids which are used to earth electrical substations could be equally or unequally spaced. Unequally spaced grids were introduced to improve the requirements of the grids such as grounding grid resistance (Rg), ground ...
El-Sayed M. El-Refaie, Said E. Elmasry, M.K. Abd Elrahman, Mohamed H. Abdo   +3 more
doaj   +2 more sources

Effects of Various Earth Grid Configurations on Ground Potential Rise Caused by Lightning Strike [PDF]

, 2019
Ground Potential Rise (GPR) caused by lightning strike is a potential hazard for electrical equipment inside an oil and gas refinery plant. In order to mitigate the risk, horizontal grounding grid is applied. The best mitigation is
Madrin, F.P., Widyaputera, H., Yasir, M.F.M., Malek, Z.A., Supriyanto, E., Taib, M.A.A.   +5 more
core   +5 more sources

Frequency Dependence of Multilayer Soil Electrical Parameters: Effects on Ground Potential Rise [PDF]

, 2021
The paper presents a comprehensive study on the effect of frequency dependence of multilayer soil electrical parameters (SEPs) on ground potential rise (GPR). The lightning current has a large effect on the GPR.
Filipe Faria da Silva, Bak, Claus Leth, Silva, Filipe Miguel Faria da; id_orcid, Ghomi, Mohammad, Mohammad Ghomi, Claus Leth Bak   +5 more
core   +1 more source

Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil [PDF]

, 2021
Grounding electrodes are used to provide a low-impedance dissipation path for the excess lightning or fault currents. Several studies have been dedicated to the computation of the grounding impedance of different electrode arrangements considering either
de Seixas, Claudiner M., Justo de Araújo, Anderson R., Kordi, Behzad, de Araújo, Anderson R.J., Salarieh, Bamdad, Kurokawa, Sérgio [UNESP], Colqui, Jaimis S.L. [UNESP], Kurokawa, Sérgio, Colqui, Jaimis S.L., Pissolato Filho, José   +9 more
core   +1 more source

Impulse Characteristics of Ground Electrodes Over Time (10 Months) [PDF]

, 2022
One of the parameters to be considered when designing the grounding system is the soil resistivity. The soil resistivity is expectedly to change over time due to changes in water content, soil migration, chemical and fluid composition and temperature in ...
Ahmad, Nurul Nadia, Aman, Fazlul, Mohamad Nor, Normiza   +2 more
core   +1 more source

Impact of Earthing System Designs and Soil Characteristics on Tower Footing Impedance and Ground Potential Rise: A Modelling Approach for Sustainable Power Operation [PDF]

, 2021
Improving a tower earthing system by reducing the impedance is an effective solution to prevent back flashover from occurring and thus maintaining the sustainable operation of power supply.
Mohd Solehin Mohd Nasir, Muhamad Safwan Abd Rahman, Ungku Anisa Ungku Amirulddin, Mohd Zainal Abidin Ab Kadir, Nur Hazirah Zaini, Nur Alia Farina Mohamad Nasir, Nik Hakimi Nik Ali, Miszaina Osman   +7 more
core   +1 more source

Empowering and conquering infirmity of visually impaired using AI‐technology equipped with object detection and real‐time voice feedback system in healthcare application

CAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract The Internet of Things is emerging as a crucial technology in aiding humans and making their lives easier. Among the human population, a large percentage of people suffer from disabilities resulting in challenges in everyday life particularly people with visual disabilities.
Hania Tarik, Shahzad Hassan, Rizwan Ali Naqvi, Saddaf Rubab, Usman Tariq, Monia Hamdi, Hela Elmannai, Ye Jin Kim, Jae‐Hyuk Cha   +8 more
wiley   +1 more source

Synthetic modeling and field GPR survey to understand the near-surface deformation induced by coseismic groundwater dynamics following the 2019 Mirpur earthquake in Pakistan [PDF]

, 2022
The Mirpur earthquake of Mw 5.8 on 24 September 2019 severely damaged villages in the epicentral area. The earthquake-triggered ground dynamics produced widespread liquefaction features on the surface (e.g., fractured road structure and sand boils) and ...
Muhammad Younis Khan, Khan, Muhammad Younis, Turab, Syed Ali, Jan, Irfan Ullah, Min, Dong-Joo, Jongha Hwang, Hwang, Jongha, Irfan Ullah Jan, Syed Ali Turab, Dong-Joo Min   +9 more
core   +1 more source

The method of intelligent wireless sensor to improve the water permeability of permeable asphalt concrete pavement

IET Networks, EarlyView., 2022
Abstract This research aims to study the intelligent wireless sensor to improve the water permeability of permeable asphalt concrete pavement. The water permeability of pavement is extremely important for the traffic environment. This study first briefly introduces the background and significance analysis, and then exemplifies the deployment algorithm ...
Xingmei Zhang, Cong Xu, Qi Lei
wiley   +1 more source

Analysis the influence of corrosion layer on the grounding performance of grounding electrodes

IET Generation, Transmission & Distribution, 2020
The grounding electrode buried in soil is prone to corrosion affected by soil and leakage current. The surface of corroded grounding electrodes is wrapped with corrosion product, which affects the normal current dissipation process and weakens the ...
Zhanlong Zhang, Jing Zou, Yihua Dan, Huarui Ye, Yiqiao Li, Jun Deng   +5 more
doaj   +1 more source