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All Journal Kitektro CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro AJAD : Jurnal Pengabdian kepada Masyarakat Journal of Renewable Energy, Electrical, and Computer Engineering Jurnal Pengabdian Masyarakat As-salam Journal Geuthee of Engineering and Energy kawanad jes PESARE: Science and Engineering Service Journal Indonesian Journal of Technical and Vocational Education Training Indonesia Berdampak: Jurnal Pengabdian Kepada Masyarakat
Ramdhan Halid Siregar
Teknik Elektro Dan Komputer, Universitas Syiah Kuala
Religion Aerospace Engineering Arts Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Public Health Social Sciences Other

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Short circuit current limitation using series reactors in 20 kV distribution feeder Ramdhan Halid Siregar; Alwan Farras; S Syahrizal
Journal Geuthee of Engineering and Energy Vol 5, No 1 (2026): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v5i1.94

Abstract

Short-circuit faults in power distribution systems generate excessive fault currents that can damage electrical equipment and reduce system reliability. One practical method for limiting fault current is the installation of a series reactor or current limiting reactor (CLR). This study analyzes short-circuit current characteristics in the 20 kV Ulee Kareng distribution feeder in Banda Aceh and evaluates the effectiveness of a series reactor in reducing fault current levels. The analysis was performed using ETAP 19.0.1 simulation software based on the IEC 60909 standard. Four fault types were investigated: three-phase, single line-to-ground, line-to-line, and double line-to-ground faults. The simulation results show that the maximum three-phase short-circuit current before reactor installation was 4.066 kA at bus LBU 01-00, while the minimum value was 2.732 kA at bus LBU 42-00. A series reactor with a reactance value of 3.12 Ω was designed to achieve approximately 50% current reduction. After installation, the three-phase short-circuit current at bus LBU 01-00 decreased to 2.103 kA, corresponding to a 48% reduction. The results confirm that the series reactor effectively reduces fault current levels and improves protection system performance without replacing existing circuit breakers. The novelty of this study lies in the evaluation of series reactor performance for all fault types in the actual 20 kV Ulee Kareng distribution feeder using IEC 60909-based ETAP simulations under real operating conditions
Pembinaan Pemasangan Pembangkit Listrik Tenaga Matahari bagi Santri Dayah Mini Banda Aceh Rakhmad Syafutra Lubis; Suriadi Suriadi; Mahdi Syukri; Ramdhan Halid Siregar; Masri Masri; Yuwaldi Away
AJAD : Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 3 (2025): DECEMBER 2025
Publisher : Divisi Riset, Lembaga Mitra Solusi Teknologi Informasi (L-MSTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59431/ajad.v5i3.684

Abstract

Solar energy is a renewable energy source that has become increasingly popular in recent years as an electricity source. However, the availability of trained personnel to install rooftop solar panels is limited. This community service program was conducted to provide training in residential solar system installation for students from Dayah Mini Banda Aceh. The training took place in the Power Electronics and Renewable Energy Laboratory at Universitas Syiah Kuala, where theoretical training on renewable energy was combined with demonstrations of equipment and simulated installation practice. The modules included rail mounting, panel positioning, inverter connections, charge controller setup, and wiring in series and parallel. Students were guided by lecturers and assisted by engineering students who had already undergone training in this field. They exhibited great enthusiasm and completed all the stages of installation successfully. This program not only addresses the shortage of workers with such skills in the solar installation industry but also helps students from low-income families acquire these practical competencies that can lead to jobs or entrepreneurship within the ever-growing sector of renewable energy; thus reducing unemployment among their communities while supporting Indonesia's shift towards sustainable energy.
Pelatihan Pengenalan Energi Baru Terbarukan dan Alat-Alat Kelistrikannya Bagi Pemuda di Sekitaran Kampus USK Rakhmad Syafutra Lubis; Ramdhan Halid Siregar; Mahdi Mahdi
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 3, No 1 (2025): Februari 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pesare.v3i1.41927

Abstract

Penggunaan energi listrik semakin meningkat. Genset dapat digunakan apabila pasokan listrik terganggu. Akan tetapi, genset ini membutuhkan bahan bakar minyak yang banyak jika dijalankan dalam jangka waktu yang lama. Penggunaan bahan bakar minyak atau bahan bakar lainnya seperti batu bara tidak dapat dilakukan tanpa adanya perkiraan penghematan, karena sumbernya terbatas dan semakin menipis. Untuk mengantisipasi menipisnya sumber daya bahan bakar alam, maka dilakukan penghematan dan pencarian bahan bakar alternatif yang sumbernya dapat diperbarui seperti tenaga surya, angin, air, dan gelombang laut serta biofuel. Sumber-sumber energi terbarukan tersebut dapat dikelola untuk menghasilkan energi listrik dengan merancang teknologi tepat guna sebagai pembangkit listrik seperti pembangkit listrik tenaga angin, pembangkit listrik tenaga surya, dan pembangkit listrik tenaga air. Edukasi dilakukan kepada masyarakat sekitar kampus USK tentang penghematan penggunaan energi listrik serta pemanfaatan dan pengenalan beberapa sumber energi terbarukan dan pengenalan beberapa pembangkit listrik yang menggunakan energi terbarukan. Masyarakat diberikan edukasi tentang jenis, fungsi, cara kerja dan perawatan pembangkit listrik energi terbarukan. Dalam pelatihan tersebut masyarakat diberikan penjelasan secara teoritis, kemudian diperlihatkan pembangkit listrik energi terbarukan di lokasi pelatihan, lalu dipandu dengan menunjukkan cara mengoperasikan pembangkit listrik tersebut.
Pelatihan Pengenalan Mesin-Mesin Listrik bagi Masyarakat Seputaran Kampus USK Rakhmad Syafutra Lubis; Ramdhan Halid Siregar; Syukriyadin Syukriyadin; Alfisyahrin Alfisyahrin; Saifuddin Muhammad Jalil
Indonesia Berdampak: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 1 (2026): JANUARI-JUNI 2026
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/qxxkm356

Abstract

Electrical power is used not only for lighting but also for devices that can facilitate daily activities, such as washing machines, where this device drives a device called an electric motor. Electric machines are widely used in various places to help humans complete their work. Electric machines have many types and uses according to their type. The use of an electric machine is generally very frequent, therefore the possibility of damage due to age and condition is the main cause. To extend the life of an electric machine, maintenance is necessary, and if damage occurs, it can usually be repaired so that the cost of use is cheaper when compared to buying a new electric machine as a replacement. The most common damage is in the windings of the electric machine. The windings are long conductor wires wrapped around the stator (the stationary part). This winding is where the rotating electric field will be generated which will affect the conductors in the rotor (the rotating part) so that it can rotate. This winding is the most important part of an electric machine or motor. When the electricity supply is disrupted, some people use a temporary power generator called a generator set (a generator that is driven by a combustion engine or what is called a genset). These two devices, motors and generators, are known as electrical machines. Therefore, the community service team felt the need to conduct training for several interested community members. This training, called Introduction to Electrical Machines, was conducted. By utilizing the skilled workforce already available within the Electrical and Computer Engineering Department, Faculty of Engineering, Unsyiah, including lecturers, students, and the laboratory, the training is expected to increase the number of skilled personnel in electrical machine maintenance and repair. This will, in turn, increase budget savings in the use of electric motors within the community.        
Pelatihan Pemeliharaan dan Perbaikan Motor Listrik Rakhmad Syafutra Lubis; Ramdhan Halid Siregar; Syukriyadin Syukriyadin; Alfisyahrin Alfisyahrin; Saifuddin Muhammad Jalil
Indonesia Berdampak: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 2 (2026): JULI-DESEMBER
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/qzxga020

Abstract

Electric motors are widely used in various places to assist human work. Their intensive use makes damage due to age and operating conditions a common occurrence. The most frequent damage occurs in the motor windings, the most critical part that generates a rotating magnetic field. Repairing this damage requires rewinding the coils with high precision, as errors can cause the motor to malfunction. To extend the motor's service life and reduce repair costs, skilled personnel are needed in the community who can perform electric motor maintenance and repair. Therefore, the community service team conducted training on motor winding rewinding for interested community members. This training utilized experts from the Department of Electrical and Computer Engineering, Faculty of Engineering, Syiah Kuala University, including lecturers, students, and laboratory staff. This activity aims to increase the number of skilled workers in electric motor maintenance and repair, particularly in rewinding coils, so that electric motors can function properly again and maintenance cost savings can be improved in the community. The results achieved showed a noticeable improvement in participants' understanding after the training, and participants were able to perform the motor winding rewinding practice under guidance.  
Matlab Simulation Using Kalman Filter Algorithm to Reduce Noise in Voice Signals Fitra Permana Putra; Kartika Kartika; Nanda Sitti Nurfebruary; Misriana Misriana; Kerimzade G. S; Ramdhan Halid Siregar
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 4 No. 1 (2024): March 2024
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v4i1.13687

Abstract

Sound signals polluted by noise are a common problem in various audio applications, including communication, sound processing, and audio recording. In this article, proposes the use of Kalman Filter algorithm as an effective method to reduce noise in speech signals. Simulations are performed using Matlab software to implement the Kalman Filter algorithm on noise polluted voice signals. The study includes several important steps, including the input of noise-polluted speech signals and the implementation of the Kalman Filter to clean the signals. Simulation results are measured using commonly used audio quality metrics, such as Signal-to-Noise Ratio (SNR) and Mean Square Error (MSE), to evaluate the effectiveness of the algorithm. The results from the simulations show that the use of the Kalman Filter algorithm significantly improves the quality of noise-contaminated speech signals. These results indicate that this algorithm can be a potential solution to the problem of noise reduction in audio applications. In addition, the implementation in the Matlab environment allows for easy testing and adaptation of this algorithm for different types of audio applications. This research makes a positive contribution to the development of more efficient noise reduction techniques in speech signal processing, focusing on the use of the Kalman Filter algorithm and its implementation using Matlab software. The implications of this research can be potentially beneficial in improving the quality of sound signals in various audio application contexts.
Compensation of Voltage Sags Due to Short Circuits on Distribution Lines (Feeders) with Dynamic Voltage Restorer (DVR) Rakhmad Syafutra Lubis; Muhammad Iqbal Nasir Gade; Ramdhan Halid Siregar; Mahdi Syukri; Saifuddin Muhammad Jalil
Journal of Engineering and Science Vol. 5 No. 1 (2026): June
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v5i1.418

Abstract

Short circuit faults occur frequently on distribution lines. Such faults generate a fault current within a short interval and result in a momentary voltage drop, commonly known as a voltage sag. On a feeder, the short circuits that occur most often are single-phase-to-ground, two-phase, and three-phase faults. To determine the voltage sag on the line caused by a short circuit, it is necessary to analyze the short circuit fault current and voltage sag by assuming the fault point at 25%, 50%, 75%, and 100% of the total length of the BA 15 feeder. The voltage sag when a single-phase-to-ground short circuit occurs at 25%, 50%, 75%, and 100%, respectively, is 8663.68∠0° V, 5773.4∠0° V, 2886.87∠0° V, and 525.48∠0° V. When a two-phase short circuit occurs, the voltage sag is 19022.602∠0° V, 16637.035∠0° V, 12106.47∠0° V, and 11826.98∠0° V, while during a three-phase short circuit it is 5000∠-76.05° V, 10000∠-70.21° V, 15000∠67.05° V, and 18231.99∠24.29° V. This voltage sag disturbance can be corrected using a DVR, which injects the voltage required to restore normal conditions.
Economic Scheduling of Thermal Power Plants in the West Sumatra System Using Genetic Algorithms Syafutra Lubis, Rakhmad; Septian Riswandi; Ramdhan Halid Siregar
Circuit: Jurnal Ilmiah Pendidikan Teknik Elektro Vol. 10 No. 2 (2026)
Publisher : PTE FTK UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/45s9tw60

Abstract

Fuel cost is the largest component of operating expenses for thermal power plants; consequently, suboptimal scheduling increases system costs. This study determines a minimum-cost 24-hour generation schedule for the West Sumatra electrical system by optimizing four thermal units—specifically at the Teluk Sirih and Ombilin power plants—while assuming the Muara Labuh geothermal unit operates at a capacity of 85 MW. A genetic algorithm is employed to generate candidate schedules, evaluate total fuel costs and power balance constraints, convert feasible solutions into fitness values, and improve the population through selection, crossover, and mutation. The algorithm uses a population size of 20,000, a crossover probability of 0.9, a mutation probability of 0.1, and 100 generations. The genetic algorithm yields a total 24-hour cost of Rp3,202,331,042.71, representing a 2.9% cost reduction compared to the actual schedule. Compared to the lambda iteration method, the cost is lower by Rp25,365.40, or 0.0008%. These findings demonstrate the effectiveness of the genetic algorithm for economic scheduling in a real-world thermal system, although its numerical advantage over the lambda iteration method in this specific case is relatively small
Co-Authors Akbar, Habibi Akbar, Muhammad Hafizh Alfisyahrin Alfisyahrin Alfisyahrin Alfisyahrin, A Alfisyahrin, Alfisyahrin Alwan Farras Andi Julisman Ardiansyah Putra Karo ARHAMI Aulia Syahbanna Anhar Bachtiar, Dandi Bima Sakti Devi Sara, Ira Fathurrahman Fathurrahman Fitra Permana Putra Hafidh Hafidh Hafidh Hasan Hubbul Walidainy Iqbar Iqbar Kartika Kartika Kerimzade G. S Lubis, Rakhmad Syafutra M. Khairul Akbar Mahdi Mahdi Mahdi Syukri Malahayati Malahayati Mansur Gapy Masri Masri Masri Masri Masri Masri Misriana Misriana Muhammad Iqbal Nasir Gade Muhammad Ridha Munawar Muhammad Rizal Fachri Muhayatsyah, Teuku Muhibbuddin Nanda Sitti Nurfebruary Nurwijayanti nyimas putri pertiwi Putra, T. Edisah Rakhmad Syafutra Lubis Rakhmad Syafutra Lubis Rakhmad Syafutra Lubis Reza Fahlevi Siregar Richardo, R Rizqan Maulana S Syahrizal Saifuddin Muhammad Jalil Septian Riswandi Siregar, Januar Parlaungan Suriadi Suriadi Suriadi Suriadi Syafutra Lubis, Rakhmad Syahrizal Syahrizal Syahrizal Syahrizal Syukriyadin Syukriyadin Syukriyadin Syukriyadin Syukriyadin Syukriyadin Syukriyadin, Syukriyadin T. Edisah Putra Teuku Multazam Teuku Syaufi Hayu Utami, Rika Sri Yuwaldi Away Zulfadhli