PERENCANAAN SISTEM GORUNDING PADA GARDU INDUK 70 KV PT. INDOTAMA FERRO ALLOYS PURWAKARTA
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Qisthi Fadhillah, Amilah
Darmana, Tasdik
Darmana, Tasdik
Subject
Teknik Elektro
Datestamp
2022-10-11 03:09:30
Abstract :
The grounding system is an important part in the construction of substations. This grounding system serves to protect equipment and humans from the danger of leakage current when under normal conditions or in disturbances. This study has the aim of achieving safe criteria at the 70 kV substation PT. Indotama Ferro Alloys when planning is carried out so that the main requirements for an earthing system are fulfilled, namely a reliable and effective grounding system. The grid earthing system is used in this design, with the soil resistivity value being a factor that affects the depth of conductor planting and the total rods with a combination of the number of rods and grids. This planning is done by measuring the ground resistance which can then determine and compare the tolerance limits of the touch voltage and step voltage with the actual voltage. Based on the results of the 70 kV substation planning PT. Indotama Ferro Alloys obtained a soil resistivity of 6.85 ohm-meters so that the diameter of the conductor to be used is 0.01 m. Then the touch voltage limit is 1538.90 V and the step voltage limit is 5489.51 V, and the calculated mesh voltage is 552.56 V.
The grounding system is an important part in the construction of substations. This grounding system serves to protect equipment and humans from the danger of leakage current when under normal conditions or in disturbances. This study has the aim of achieving safe criteria at the 70 kV substation PT. Indotama Ferro Alloys when planning is carried out so that the main requirements for an earthing system are fulfilled, namely a reliable and effective grounding system. The grid earthing system is used in this design, with the soil resistivity value being a factor that affects the depth of conductor planting and the total rods with a combination of the number of rods and grids. This planning is done by measuring the ground resistance which can then determine and compare the tolerance limits of the touch voltage and step voltage with the actual voltage. Based on the results of the 70 kV substation planning PT. Indotama Ferro Alloys obtained a soil resistivity of 6.85 ohm-meters so that the diameter of the conductor to be used is 0.01 m. Then the touch voltage limit is 1538.90 V and the step voltage limit is 5489.51 V, and the calculated mesh voltage is 552.56 V.
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