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Journal : EPSILON: Journal of Electrical Engineering and Information Technology

Perencanaan Pembangkit Listrik Tenaga Surya (PLTS) Terpusat Di Kecamatan Embaloh Hulu Samsurizal; Hendrianto Husada; Andi Makkulau; Christiono
EPSILON: Journal of Electrical Engineering and Information Technology Vol 18 No 2 (2020): EPSILON: Journal of Electrical Engineering and Information Technology
Publisher : Department of Electrical Engineering, UNJANI

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Abstract

Listrik merupakan hal yang sangat dibutuhkan masyarakat khususnya diwilayah yang belum terjangkau seperti wilayah perbatasan, terdapat banyak kendala dan permasalahan yang dihadapi untuk listrik dapat sampai ke masyarakat khususnya wilayah perbatasan. PLTS dapat menjadi solusi yang handal bagi penyediaan energi di daerah perbatasan yang terletak jauh dari jaringan listrik. Penelitian ini bertujuan untuk mengkaji bagaimana pemanfaatan potensi energi matahari sebagai salah satu satu wilayah yang belum teraliri listrik, berdasarkan pengamatan dari segi geografis dan demografi wilayah tersebut, memiliki potensi untuk dibangun PLTS. Dari hasil perhitungan dan analisa di lokasi prioritas perbatasan, total kebutuhan energi listrik yang dibutuhkan adalah sebesar 288.1 kWh/hari. Total kebutuhan energi listrik tersebut di atas sudah termasuk cadangan energi listrik 30% dan rugi-rugi sistem 30%. Kebutuhan panel surya adalah sebesar 444 unit, sedangkan total kebutuhan baterai yang dibutuhkan adalah sebesar 42 unit. Battery Charge Controller yang dibutuhkan adalah sebesar 8 unit. Inverter yang dibutuhkan adalah sebesar 10 unit. Adapun besarnya kebutuhan biaya investasi pemanfaatan pembangkit listrik tenaga surya (PLTS) adalah sebesar Rp. 23,466,264,000
Studi Sistem Pentanahan Pada Transformator Daya 60 MVA di GIS 150 KV Samsurizal Samsurizal; Kathelya Nindya Ulina; Andi Makkulau; Nurmiati Pasra
EPSILON: Journal of Electrical Engineering and Information Technology Vol 19 No 1 (2021): EPSILON: Journal of Electrical Engineering and Information Technology
Publisher : Department of Electrical Engineering, UNJANI

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Abstract

Grounding system is one way to reduce the effect of an electric current that can occur by several kinds of causes, such as leakage current or short circuit and the result of lightning surges. One method of grounding on a power transformer used by GIS Jatiwaringin is to use a NGR (Neutral Grounding Resistor) mounted on the 20 kV side, while on the 150 kV side it uses direct grounding (solid grounding) and the presence of a Ground Fault Relay. The value of single-phase short circuit current to the ground with resistance R = 12 Ω at the location with the percentage of disturbance of 25% that is equal to 928.48 Ω. Meanwhile, the value of single-phase short-circuit current to the ground without passing R at the location with a disturbance percentage of 25% is equal to 4066.55 Ω. Thus, the effect of the NGR on a single-phase to short-circuit fault current is to limit the one-phase short-circuit fault current to the ground so it does not flow to the neutral point of the transformer. The TMS value on the GFR on the outgoing side based on calculations is 0.11 and based on the installed relay is 0.12. Meanwhile, the TMS value on the GFR on the incoming side based on calculations is 0.27 and based on the installed relay is 0.15. Then, at the location with 25% disturbance percentage is 0.382 s. The difference between the relay's working time on the outgoing side and the incoming side is still in accordance with applicable standards, with a maximum difference of 0.4 seconds.