Analysis of the Grounding System of the Glugur Substation with Grid Construction

Abstract

The grounding system at the Glugur substation is one of the most important parts in the distribution of continuous, high-quality electricity. This is because the Glugur substation must work well with large disturbances that affect computer equipment, which is the main cause of damage to substation equipment. This is caused by the grounding system not functioning properly, namely due to the grounding resistance being greater than the standard limit of 0-1 ohm. Therefore, it is necessary to analyze whether the Glugur substation grounding system still meets the above standards. In this study, a specific analysis of the Glugur substation system was conducted using the grid construction method, taking into account mesh voltage, voltage, maximum grid, GPR, and soil resistivity. The results of the study show that the resistance value of the grounding system for substation equipment meets the standard of 0.10 Ω to 0.8 Ω, compared to the calculation results, namely a grounding grid without a grounding grid resistance rod (Rg = 0.47 Ω) and a grounding grid with a grounding rod (Rg = 0.18Ω). The maximum grounding grid current of the substation is capable of conducting power to the ground up to 9307.8 A, with a grid conductor size of 38.72 mm².