Analisis Sistem Pentanahan Gardu Induk New Jakabaring 150 kV Menggunakan Simulasi ETAP Berdasarkan IEEE Std 80-2013
DOI:
https://doi.org/10.31851/ampere.V11.i1.22420Keywords:
Sistem Pentanahan, Gardu Induk 150 kV, IEEE Std 80-2013, ETAP, PentanahanAbstract
Sistem pentanahan pada gardu induk berperan penting dalam menjaga keselamatan personel dan keandalan peralatan dengan menyalurkan arus gangguan ke tanah serta membatasi tegangan sentuh dan tegangan langkah. Penelitian ini bertujuan untuk menganalisis kinerja sistem pentanahan Gardu Induk New Jakabaring 150 kV berdasarkan IEEE Std 80-2013 melalui perhitungan manual dan simulasi menggunakan software ETAP. Analisis dilakukan terhadap parameter resistansi pentanahan, arus grid, Ground Potential Rise (GPR), tegangan sentuh, dan tegangan langkah menggunakan data sistem pentanahan eksisting dengan konfigurasi grid-rod. Hasil perhitungan manual menunjukkan nilai resistansi pentanahan sebesar 0,55 Ω, sedangkan hasil simulasi ETAP sebesar 0,552 Ω. Nilai Ground Potential Rise (GPR) yang diperoleh masing-masing sebesar 3300 V dan 3363,3 V. Simulasi ETAP menghasilkan tegangan sentuh aktual sebesar 468 V dan tegangan langkah aktual sebesar 364,9 V, yang masih berada di bawah batas tegangan yang diizinkan berdasarkan IEEE Std 80-2013 untuk berat badan 50 kg maupun 70 kg. Perbandingan hasil perhitungan manual dan simulasi menunjukkan perbedaan yang relatif kecil, sehingga hasil simulasi ETAP memiliki tingkat kesesuaian yang baik terhadap perhitungan manual. Kontribusi penelitian ini adalah memberikan verifikasi kesesuaian hasil perhitungan manual berdasarkan IEEE Std 80-2013 dengan simulasi ETAP pada sistem pentanahan Gardu Induk New Jakabaring 150 kV, sehingga dapat menjadi referensi dalam evaluasi dan validasi desain sistem pentanahan gardu induk. Berdasarkan hasil tersebut, sistem pentanahan Gardu Induk New Jakabaring 150 kV memenuhi kriteria keselamatan menurut IEEE Std 80-2013, dan software ETAP dapat digunakan sebagai alat yang efektif untuk mengevaluasi serta memvalidasi kinerja sistem pentanahan gardu induk.
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