Analysis of grounding rods size in varying soil resistivities using COMSOL multiphysics

This thesis discusses the performance of various grounding rod sizes in reducing grounding resistivity. Malaysia is a country that constantly has lightning strikes all year round, therefore grounding systems should be improved to provide better safety features. Small modifications could be made to any existing grounding grid to improve its efficiency in conducting electricity. Grounding rods of different lengths and diameters were designed and simulated in COMSOL Multiphysics to understand how it will alter the overall grounding resistivity and performance. The results have shown that the thicker and longer rods had a higher conductivity and was able to disperse electricity more efficiently. This method can be further improved by simulating other variables for future work.