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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi Journal of Electrical Technology UMY INTEK: Jurnal Penelitian Jurnal Teknik Mesin Sinergi Jurnal JEETech
Makmur Saini
Politeknik Negeri Ujung Pandang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering

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Power Flow Analysis in N-1 Contingency Conditions Due to the Entry of Renewable Power Plants in the Sulselrabar System Djalal, Muhammad Ruswandi; Saini, Makmur; Yunus, A.M Shiddiq
INTEK: Jurnal Penelitian Vol 9 No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v9i1.3742

Abstract

Contingency analysis on a 150 kV network aims to see the network's reliability against interference. Contingency is a scheme for releasing one element of the generating unit or transmission line (N-1), which will affect the performance and reliability of the electric power system. Power flow analysis in an electric power system is an analysis that reveals the performance of an electric power system and the flow for certain conditions when the system is working. The analysis was carried out using the ETAP 16.00 software. The method used was the newton raphson to calculate the load flow in the N-1 contingency condition. From the results of the study, it can be seen that the power flow occurs in each channel of the 150 kV system in the South Sulawesi system. When conducting a contingency analysis of N-1 by removing the load on the middle lane of South Sulawesi, namely Maros and Sidrap, a voltage change occurs, increasing buses experiencing critical and marginal voltage conditions. This happens because of the sudden release of essential loads, so over or under voltage appears on the bus.
Monitoring the Condition of the 20 kV Switching Substation in the Tual Rayon Saumlaki Area Pangkung, Andareas; Sonong, Sonong; Saini, Makmur; Djalal, Muhammad Ruswandi; Jamal, M Fachmi
INTEK: Jurnal Penelitian Vol 10 No 2 (2023): October 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i2.4626

Abstract

A 20 kV cubicle is a set of electrical equipment installed in a distribution substation as a distributor, circuit breaker, connector, controller, and protection system for the 20 kV voltage power distribution. The frequent issue in these cubicles is corona discharge on electrical equipment, which is a phenomenon occurring when the air around conductors or conductive materials becomes ionized, resulting in the release of charges that can lead to insulation failure in the equipment. The consequences are severe as it can damage the equipment inside the cubicle and cause power losses. This research analyzes the influence of humidity, temperature, sound, and light conditions inside the cubicle to identify the symptoms of corona discharge in the 20 kV cubicle and its accessories. The goal is to create a tool that can address and anticipate the issues related to corona discharge caused by the effects of humidity, temperature, sound, and light.
Analisis Pemasangan Power System Stabilizer Pada Single Machine Infinite Bus Untuk Kondisi Variasi Beban Muhammad Ruswandi Djalal; Makmur Saini; A.M Shiddiq Yunus
Jurnal JEETech Vol. 3 No. 2 (2022): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Changes in the load on the electric power system suddenly cause dynamic disturbances. The disturbance causes the stability of the generator to be disturbed, because the generator does not respond to the disturbance quickly. This causes oscillations in the generator in the form of oscillations of frequency and rotor angle. One of the additional control equipment that can increase the stability of a generator is the Power System Stabilizer (PSS). With the PSS installation, the optimal frequency response and rotor angle of the SMIB system are obtained, indicated by the minimum system overshot response. The controller is able to provide stability so that overshoot oscillations can be suppressed, as well as faster settling time performance for the system to reach steady state conditions. To test the stability of the SMIB system, a case study of adding and subtracting loads is used, with the proposed control method using PSS.
Pengaturan Jarak Bola (Sphere Gap) Pembangkitan Tegangan Tinggi Impuls Secara Semi Otomatis Sonong Sonong; Muhammad Yusuf Yunus; Marhatang Marhatang; Makmur Saini; Herman Nawir; Muhammad Ruswandi Djalal
Jurnal JEETech Vol. 4 No. 1 (2023): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v4i1.4101

Abstract

An overhaul is a process of dismantling a problematic engine so that it can be examined more thoroughly. During the overhaul, the problematic engine components are replaced. The overhaul of the sphere gap setting of the semi-automatic high impulse voltage generation is also intended to maximize the K3 system and the level of accuracy when conducting research on impulse voltage generation. The current condition after the occurrence of damage to the automatic sphere gap adjustment machine. The sphere gap setting is done manually, causing the desired ball gap distance to be not very accurate, and the risk of work accidents is higher in the high voltage laboratory. In the first stage of work, an inspection and measurement were carried out to replace the capacitor and limit switch components because they could no longer be used. As well as improvements to the electromagnetic brake components. From the test results, it was found that the distance measurement was as expected and it can be proven that after an overhaul, the semi-automatic spacer can function normally again so it can make it easier to conduct high voltage impulse research. In addition, from a security point of view, it is better because the spacing between the balls is done outside the high-voltage impulse generation cage
Analisis Perbandingan Tegangan Tembus Antara Minyak Terpurifikasi dan Non Terpurifikasi Pada Transformator Unit 1 PLTA MALEA 2x45 MW Reza Alfirdaus, Muh; Saini, Makmur; Sonong
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5091

Abstract

This study aims to analyze the comparison of breakdown voltage between purified and non-purified transformer oil in the Unit 1 transformer at PLTA Malea. The research focuses on evaluating the quality of transformer oil as an insulating and cooling medium to maintain transformer performance and reliability. The research method used was an experimental method by conducting breakdown voltage (BDV) tests on transformer oil samples before and after the purification process. The testing was carried out using an Insulating Oil Tester in accordance with the IEC 60422-2013 standard, with an electrode gap of 2.5 mm, and each sample was tested six times to obtain the average breakdown voltage value. In addition, supporting tests including viscosity and moisture content measurements were conducted to evaluate the changes in the physical characteristics of the transformer oil. The results showed that the non-purified transformer oil had an average breakdown voltage of 55.11 kV, which was considered unsuitable for operation because it was below the minimum standard. After the purification process, the average breakdown voltage increased significantly to 77.95 kV and met the operational requirements based on the IEC 60422-2013 international standard. These results indicate that transformer oil purification is effective in improving dielectric strength and insulation quality, and therefore can be recommended as a preventive and corrective maintenance method to maintain transformer reliability and extend its operational lifespan.
Rancang Bangun Alat Pembuka Otomatis Water Separator Pada Mesin Diesel Pembangkit Listrik Tenaga Diesel Di Pulau Lae - Lae Sulawesi Selatan Risal, Muhammad; Wichaksono, Aryo; Saini, Makmur; Hamzah, Nur
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5531

Abstract

Penelitian ini bertujuan untuk merancang prototype dan mengembangkan sebuah alat pembuka otomatis water Separator untuk meningkatkan efisiensi dalam proses pemisahan air dan bahan bakar pada sistem water Separator. Alat ini dirancang dengan menggunakan pendekatan mekanik dan elektronik memanfaatkan sensor level air dan mikrokontroler untuk mendeteksi keberadaan air dan mengaktifkan mekanisme pembuka katup secara otomatis. Kandungan pH air pada kondisi normal berkisar 6-8,5ppm (part permilion). Data perawatan operator PLTD Lae-Lae pada sistem water Separator terdapat 10 tetes air atau berkisar antara 0.15 ml hingga 0,50 ml. Dari hasil pengujian level sensor air mendeteksi ketinggian air sebanyak 150 ml dan katup membuang air selama 10 detik. PLTD Lae - Lae beroperasi 24 jam dan menghabiskan 600 liter solar dan tangki kapasitas 10 ribu liter. untuk tangki bulanan, terdapat 3 unit mesin yang beroperasi maka terdapat tangki harian kapasitas 1000 liter l. hasil pengukuran tegangan input baterai 12.52V dan output regulator 5.08V dan sumber energi yang di gunakan DC 12V kapasitas alat dipisahkan dalam 1 waktu 150 ml. Efisiensi pembuangan air pada alat tersebut 90%.
Co-Authors A. A. Mohd Zin A. M. Shiddiq Yunus A.M Shiddiq Yunus A.M Shiddiq Yunus A.M. Shiddiq Yunus Ahamad Rizal Sultan Ahmed Abu-Siada Andar Triwijaya Andareas Pangkung Aslan Afif Azriyenni Azhari Zakri Deum Patria F Abbas Devi Prasetyo Utomo Fina Pratiwi Firdaus Firdaus Fuad, M. Syaiful Golda Evangelista Patrix Herman Nawir Herman Nawir, Herman Hidayat Hidayat Hijrawati Buralangi, Nurul Ibrahim Ibrahim Isradianto, Isradianto Jamal, M Fachmi M. W. Mustafa Maghfirah Maghfirah Makbul Makbul Marhatang Marhatang Muh Yassir Muh Yusuf Yunus Muh. Yusuf Yunus Muhakkir Muhakkir Muhakkir, Muhakkir Muhammad Azhar Muhammad Ikram Fauzan Muhammad Risal, Muhammad Muhammad Ruswandi Djalal Muhammad Yusuf Yunus Muhammad Yusuf Yunus Nur Hamzah Nur Hamzah Nur ‘Azah Rangga Eka Saputra Remigius Tandioga Reza Alfirdaus, Muh Risal Akbar Rusdi Nur Rusdi Nur Rustang Rustang Sattar Sattar, Sattar Shiddiq Yunus, A.M Sonong Suhartiwi Suaib Sukma Abadi Wichaksono, Aryo Yusmar Yusmar Yusmar, Yusmar Yusril Has Barlian Yusuf Yunus, Muhammad