Citation

Madrin, F.P. and Widyaputera, H. and Supriyanto, E. and Malek, Z.A. and Taib, M.A.A. and Yasir, M.F.M. (2019) Effects of Various Earth Grid Configurations on Ground Potential Rise Caused by Lightning Strike. International Journal on Robotics, Automation and Sciences, 1. pp. 14-20. ISSN 2682-860X

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Abstract

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 to install a grounding grid with mesh size as small as possible. This condition requires a high cost. In order to obtain the optimal mesh size, a series of simulation of a grounding grid with mesh size variations on GPR caused by lightning strike has been carried out. CDEGS software was used to observe the GPR withvarious mesh size from 6.5 x 6.5mto 20x 20m. Simulation results show that the maximum transient GPR rises as the grounding grid mesh size is increased, while the GPR distribution throughout the grounding grid area doesnot change much for different mesh sizes. In the other hand, decreasing the grid size would mean that more conductorsare required, hence the cost would increase accordingly. The result shows that grid sizesfrom6.5x6.5m up to 20 x 20m have no significant difference in term of GPR. In term of cost,10x 10mdoes not show significant difference with 20x 20m, on the other hand, there is a significant difference for grid sizes1x1m to 10x10m. From theresults, grid sizesbetween 10x10m up to 20x20m are still applicable as stated inPetronas Technical. To comply with proper GPR value, additional protection devices are needed to protect the electrical equipment from potential damage.

Item Type:	Article
Uncontrolled Keywords:	Ground Potential Rise, Grounding Grid, Mesh Size
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001-3521 Distribution or transmission of electric power
Divisions:	Others
Depositing User:	Mr. MUHAMMAD AZRUL MOSRI
Date Deposited:	15 Jul 2024 02:37
Last Modified:	15 Jul 2024 02:37
URII:	http://shdl.mmu.edu.my/id/eprint/12610

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