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All Journal Journal of Electrical Technology Impression : Jurnal Teknologi dan Informasi
Muhammad Ikhwan Fahmi
Universitas Prima Indonesia
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Analisis Potensi dan Perancangan Sistem Hybrid PV/Wind Untuk Motor Board di Perlis, Malaysia Reza Juliangga; Muhammad Ikhwan Fahmi; Syofyan Anwar Syahputra; Muhammad Fadlan Siregar
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 3 (2025): November 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i3.1214

Abstract

Penelitian ini menganalisis potensi iradiasi matahari, temperatur, dan kecepatan angin sebagai sumber energi untuk sistem hybrid photovoltaic (PV)/wind powered motor board di Perlis, Malaysia. Data dikumpulkan selama periode Agustus hingga Desember 2018 di Centre of Excellence for Renewable Energy (CERE), Universiti Malaysia Perlis. Hasil menunjukkan bahwa iradiasi matahari rata-rata harian adalah 371,97 W/m² dengan temperatur rata-rata 28,06°C, mengindikasikan potensi yang baik untuk pembangkit PV. Namun, kecepatan angin rata-rata hanya 1,05 m/s yang tergolong sangat rendah. Simulasi menggunakan PSpice untuk modul PV 12V 3W menghasilkan error dibawah 10% dibandingkan datasheet. Perancangan optimal sistem menggunakan 17 modul PV, 1 turbin angin, charge controller 6,38A, dan 17 baterai 12V 1,2Ah untuk mensuplai beban motor DC 10W yang beroperasi 24 jam. Prototype sistem berhasil dibuat dengan monitoring berbasis mikrokontroler ATmega8535. Hasil pengujian menunjukkan output tegangan PV berkisar 13,42-19,61V dengan arus 0,05-0,4A pada iradiasi 107,5-893,6 W/m².   This study analyzes the potential of solar irradiation, temperature, and wind speed as energy sources for a hybrid photovoltaic (PV)/wind powered motor board system in Perlis, Malaysia. Data were collected during the period from August to December 2018 at the Centre of Excellence for Renewable Energy (CERE), Universiti Malaysia Perlis. The results show that the average daily solar irradiation was 371.97 W/m² with an average temperature of 28.06°C, indicating good potential for PV generation. However, the average wind speed was only 1.05 m/s, which is classified as very low. Simulation using PSpice for a 12V 3W PV module produced an error of less than 10% compared to the datasheet. The optimal system design utilizes 17 PV modules, 1 wind turbine, a 6.38A charge controller, and 17 12V 1.2Ah batteries to supply a 10W DC motor load operating 24 hours. A prototype system was successfully built with monitoring based on an ATmega8535 microcontroller. Test results showed that the PV output voltage ranged from 13.42-19.61V with a current of 0.05-0.4A at irradiation levels of 107.5-893.6 W/m².
Identification of Partial Discharge Phenomena in Glass Insulator Testing Using HFCT Syofyan Anwar Syahputra; Muhammad Fadlan Siregar; Muhammad Ikhwan Fahmi; Mhd Fahmi Syawali Rizki; Ahmad Faisal
JET (Journal of Electrical Technology) Vol 11, No 2 (2026): : Edisi June
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jet.v11i2.13301

Abstract

Insulators are vital components in electrical power transmission systems, yet they are susceptible to degradation caused by electrical and environmental stresses. This study aims to analyze Partial Discharge (PD) characteristics in glass and porcelain insulators as an early indicator of insulation failure. Experimental testing involved a step-wise increase in AC voltage from 5 kV to 20 kV, alongside simulations of extreme conditions using exposure to a flame to trigger flashover phenomena. Discharge activity was detected using a PMDT PDetector instrument in accordance with the IEC 60270 standard. The results indicate that within the 5–15 kV range, the insulators exhibited stable performance with PD magnitudes below 20 dB. However, at 20 kV, a significant anomaly was observed in the glass insulator, characterized by a magnitude spike reaching 174 dB across the 360° phase, signaling a transition toward total failure. Phase-Resolved Partial Discharge (PRPD) pattern analysis demonstrated that thermal stress drastically lowers the air breakdown voltage threshold near the insulator surface. The study concludes that high-frequency detection methods are highly effective for the non-intrusive monitoring of insulation conditions, thereby helping to prevent catastrophic failures in electric power systems.
Pengujian Saturasi Trafo Arus terhadap Pengaruh Kerja Rele Proteksi Muhammad Ikhwan Fahmi; Mhd Fahmi Syawali Rizki; Muhammad Fadlan Siregar; Sri Indah Rezkika; Arif Milando; Ahmad Arif; Zahrul Ulum
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 2 (2025): July 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i2.960

Abstract

Fenomena saturasi pada trafo arus memiliki dampak krusial terhadap kinerja rele proteksi dalam sistem tenaga listrik. Pengujian eksperimental dilakukan untuk menganalisis karakteristik trafo arus, dengan fokus pada hubungan antara arus masukan primer (I1​), arus keluaran sekunder (I2​), dan tegangan keluaran (V). Hasil menunjukkan korelasi positif antara I1​ dengan I2​ dan V. nilai V tetap konstan pada 5,5 Volt meskipun I1​ meningkat dari 600 mA ke 800 mA, dan nilai I yang kembali ke 1,3 A pada tegangan tertentu dalam pengujian terpisah. potensi saturasi inti trafo atau perilaku non-linear komponen yang diuji, yang berpotensi memengaruhi akurasi pengukuran arus oleh rele proteksi. khususnya saat mendekati atau memasuki kondisi saturasi. Perilaku non-linear, seperti yang ditunjukkan oleh nilai V yang stabil pada dua titik I1​ yang berbeda, dan penurunan I pada tegangan yang meningkat, pengujian karakteristik trafo arus secara menyeluruh untuk memastikan rele proteksi dapat beroperasi secara akurat dan tepat waktu, terutama dalam menghadapi kondisi gangguan yang mungkin menyebabkan saturasi trafo.   The saturation phenomenon in current transformers has a crucial impact on the performance of protection relays in electric power systems. Experimental testing was conducted to analyze the characteristics of current transformers, focusing on the relationship between primary input current (I1), secondary output current (I2), and output voltage (V). The results showed a positive correlation between I1 and I2 and V. The V value remained constant at 5.5 Volts even though I1 increased from 600 mA to 800 mA, and the I value returned to 1.3 A at a certain voltage in a separate test. potential saturation of the transformer core or non-linear behavior of the components under test, which could potentially affect the accuracy of current measurement by the protection relay. especially when approaching or entering saturation conditions. Non-linear behavior, as indicated by stable V values at two different points of I1, and a decrease in I at increasing voltage, thorough testing of the current transformer characteristics to ensure the protection relay can operate accurately and timely, especially in the face of fault conditions that might cause transformer saturation.
Co-Authors Ahmad Arif Ahmad Faisal Arif Milando Mhd Fahmi Syawali Rizki Mhd Fahmi Syawali Rizki Muhammad Fadlan Siregar Reza Juliangga Sri Indah Rezkika Syofyan Anwar Syahputra Syofyan Anwar Syahputra Zahrul Ulum