Grounding Resistance Improvement Using Coconut Husk

Jaafar, Siti Nornasuha (2018) Grounding Resistance Improvement Using Coconut Husk. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

A suitable grounding conductor for electrical installation is vital to ensure safety and grounding system performance over long term. A good grounding system has low ground resistance value to easily channel fault current straightly to the earth during fault condition. Without an effective grounding system, fault current may flow to personal or electrical appliances instead of flowing through grounding system. The purpose of this project is to investigate the effect of coconut husk as additive material on galvanized steel rod electrode and copper rod electrode. The performance of coconut husk as additive material in lowering ground resistance also will be investigated in this project. Ground resistance values are measured from different type of grounding configurations using Earth Ground Tester Fluke 1623. The ground resistance measured from this project for different type of grounding configuration which is for different type of electrode, different weight of coconut husk and different coconut husk layer configuration is continued from previous study. COMSOL Multiphysic software is used to investigate the performance of coconut husk as additive material. Model of grounding system is solved by using partial differential equation through Finite Element Method (FEM). Electrical field distribution is analyzed to compare performance of each grounding configuration. The magnitude of electric field distribution is diverged proportionally with ground resistance. This is because electric current easier to flow into lower soil resistivity. Thus, it will lead to grounding system improvement.

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