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All Journal Jurnal Jurusan Pendidikan Teknik Elektro Jurnal Pendidikan Teknologi dan Kejuruan
Kadek Mardhawa Linggih
Universitas Udayana
Education Electrical & Electronics Engineering Other

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Rancang Bangun Sistem Load Shedding Pada Energy Storage Berbasis Mikrokontroler Atmega 328 Kadek Mardhawa Linggih
Jurnal Pendidikan Teknik Elektro Undiksha Vol. 12 No. 1 (2023): JPTE Periode April 2023
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpte.v12i1.49673

Abstract

Tujuan penelitian ini Menghasilkan prototipe yang menerapkan sistem load shedding pada energy storage berbasis mikrokontroler ATmega 328. Serta mengetahui kinerja dari rancang bangun sistem load shedding pada energy storage ditinjau dari efektivitasnya. Objek pada penelitian ini adalah waktu switching beban secara otomatis. Penelitian ini termasuk dalam penelitian eksperimental. Pengambilan sampel pada prototipe dilakukan sebanyak 40 kali. Hasil dari penelitian ini ditemukan bahwa Beban pada prototipe dibagi menjadi 4 kelas. Pengaman yang digunakan dalam prototipe ini adalah fuse, didapat perbedaan hasil kalibrasi voltage divider dengan multimeter pada prototipe sebesar 0.2Volt. Pada hasil eksperimen di dapat bahwa dengan menggunakan sistem load shedding beban vital dapat bertahan lebih lama dengan waktu 2 jam 6 menit 30 detik serta selisih tegangan pada sumber saat beban padam total antara penerapan sistem load shedding dengan tanpa sistem load shedding sebesar 0.13 Volt.
MENANGGULANGI GROUND FAULT DAN LEAKAGE CURRENT PADA JARINGAN INSTALASI LISTRIK DENGAN TRANSFORMATOR ISOLASI Kadek Mardhawa Linggih; I Nyoman Setiawan; Ida Ayu Dwi Giriantari
Jurnal Pendidikan Teknologi dan Kejuruan Vol. 23 No. 2 (2026): Edisi Juli 2026
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptk-undiksha.v23i2.115724

Abstract

One of the main problems that often arises in electrical distribution systems is the occurrence of ground faults and leakage currents. Both faults can trigger serious consequences, ranging from electric shocks and equipment malfunction to nuisance tripping and potential electrical fires. An isolation transformer works on the principle of galvanic separation between the source and load sides, so that it is able to inhibit leakage current flow, break ground-loop paths, and protect equipment from disturbances originating on the source side. This study experimentally tests the performance of an isolation transformer in real scenarios, measuring its impact on leakage current, neutral-to-ground voltage, and system response to artificial ground-fault disturbances, together with an economic feasibility study. Testing was performed on a 900 VA electrical installation network with a 1:1, 1000 VA isolation transformer, at four simulated leakage points (outer wall, inside wall, gravelly soil, sandy soil) and five loading stages (0-400 W). The results show that the isolation transformer effectively mitigates ground faults and leakage currents, producing 0 A leakage current at all test points after installation, compared to 10-90 mA without it. An independent-samples t-test showed a statistically significant difference (t = 5.026; df = 15; p < 0.001) between conditions with and without the isolation transformer. The economic study shows that the transformer's internal energy consumption produces a power loss of 19.008 kWh per month at full load, equivalent to a loss of Rp 25,698.82 per month, with an investment break-even point (BEP) of 16.8 years when evaluated solely from leakage-current savings.
Co-Authors I Nyoman Setiawan Ida Ayu Dwi Giriantari