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Moch. Dhofir
Departemen Teknik Elektro, Universitas Brawijaya
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PENGARUH SINAR ULTRAVIOLET DAN LAPISAN BAHAN SILICON RUBBER PADA ISOLATOR POLYETHYLENE TERHADAP SUDUT KONTAK DAN ARUS BOCOR DALAM KONDISI KERING DAN BASAH Sabila Azmil Khaqqi; Moch. Dhofir; Rini Nur Hasanah
Jurnal Mahasiswa TEUB Vol. 11 No. 2 (2023)
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This study describes the effect of variations in ultraviolet light, the silicon rubber coating on the insulator on the level of leakage current and the contact angle, in this study the insulator is made of polyethylene with two variations of angles, namely angles of 120° and 150° where there are two insulators with different conditions, namely coating and no lining. The research method used is to take data on leakage current and contact angle directly at the High Voltage Engineering Laboratory, University of Brawijaya, the test is carried out using AC voltage with a variation of the test voltage of 2 kV, 4 kV, 5 kV, 6 kV, 8 kV, 10 kV , 12 kV, 14 kV, 15 kV, 20 kV and 25 kV. Tests were carried out using 2 conditions for each insulator, namely before and after ultraviolet light irradiation with variations of 12 and 14 hours which were then tested in dry conditions and wet conditions with variations in wetting discharge 10, 30, and 60 mL/s which refers to Rainfall trend in Indonesia. Testing the contact angle on the insulator using irradiation variations of 0, 2, 4, 6, 8, 10, 12, and 14 hours. The results obtained in this study include knowing the level of leakage current in each insulator, especially comparing dry conditions and the presence of wet conditions with an increase in wetting discharge so that the surface resistance is known and also the power loss caused by the insulator. The results obtained from this study include the addition of coating causing an increase in the contact angle and the size of the leak and the greater the addition of the fin angle will cause an increase in the leakage current level, besides that the wetting current discharge also affects the leakage current, where the increase in the insulator leakage current level is directly proportional with the addition of wetting discharge. Keywords — Polyethylene insulator, Angle contact, leakage current, ultraviolet, silicone rubber, dry and wet condition
ANALISIS PENGARUH SUDUT INKLINASI DAN BAYANGAN TERHADAP KINERJA PLTS PADA GEDUNG SMAN 14 KABUPATEN TANGERANG Lisan Shidqi Hady; Unggul Wibawa; Moch. Dhofir
Jurnal Mahasiswa TEUB Vol. 11 No. 3 (2023)
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Dunia saat ini sedang menghadapi dua tantangan yang merugikan, yaitu krisis energi dan pencemaran lingkungan akibat penggunaan energi berbasis fosil. Kebutuhan listrik Indonesia di tahun 2060 diproyeksikan sebesar 1.885 TWh. Untuk memenuhi kebutuhan tersebut, diperlukan pengembangan EBT secara masif. Indonesia memiliki potensi energi radiasi matahari yang besar, yaitu 4,8 kWh/m2/hari. Tujuan diadakannya penelitian ini adalah untuk mendapatkan nilai performansi tertinggi dan real dengan mengatur sudut inklinasi dan bayangan, serta mendapatkan nilai kelayakan pemasangan PLTS on grid pada aspek ekonomi di gedung SMAN 14 Kabupaten Tangerang. Berdasarkan simulasi menggunakan software PVsyst 7.3, diperoleh bahwa variasi sudut inklinasi dari 35˚-60˚ dengan interval 5˚, semakin besar sudut inklinasi, maka semakin kecil nilai energi dan performance ratio (PR). Dengan menambahkan parameter bayangan, terjadi penurunan nilai energi sebesar 15 MWh/tahun dan 1,64% PR. Berdasarkan aspek ekonomi, pemasangan PLTS ini layak direalisasikan. Kata kunci— PLTS, Inklinasi, Bayangan, Ekonomi
ANALISIS PENGGUNAAN PANEL SURYA SEBAGAI CATU DAYA PADA PROSES INKUBASI YOGHURT Bella Aisya Rohmawati; Moch. Dhofir; n/a Nurussa’adah
Jurnal Mahasiswa TEUB Vol. 11 No. 3 (2023)
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Solar panels are basically power supplies and can be designed to supply small to large electricity needs independently or hybridly. Solar panels as a source of electrical energy supply can help sustain the energy needs of socio-economic activities, especially in the industrial sector both on a small and large scale which have not been optimally fulfilled. The PLTS design first calculates the daily load energy requirement and then compares it with the installed solar panel system that matches the daily load energy requirements for the yogurt incubation process. The calculated solar panel system is used to supply 100% of the daily load energy needs with the power capacity of solar modules, solar charge controllers and batteries must match the needs of the existing load. The calculation is done by calculating the energy requirement for a daily load with a volume of 2 liters and 2.5 liters of yogurt, which is 525.2 Wh while in practice it is 366.8 Wh. Based on the calculation of solar module power capacity, solar charge controller current capacity, and battery charge capacity, respectively, two 100 Wp solar modules of the Luminous brand, a PWM type SCC with a capacity of 30 A, and two MPower Batteries JXH 100-12G 12V with a capacity of 100 Ah. In its implementation, the battery charging time from a DoD condition of 40% using a 200 Wp solar panel is 8 hours. The battery spare time without charging is 7.2 hours with a DoD of 40%, while in a battery with a charging condition of 7.2 hours with a DoD of 20%. The PLTS system installed is able to meet the energy needs of the daily load in the incubation process of up to 10 liters of yogurt. Keywords: solar panel, power supply, yoghurt, daily energy
PENGARUH LAPISAN HIDROFOBIK PADA PERMUKAAN ISOLATOR POLIETILEN BERBENTUK SIRIP TERHADAP TINGKAT ARUS BOCOR DAN TEGANGAN FLASHOVER DALAM KONDISI BASAH DAN KERING Faisal Shidqi; Moch. Dhofir; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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This study describes the effect of the hydrophobic coating on the surface of the fin-shaped insulator on the level of leakage current and flashover voltage. The research method used to collect data on leakage current and contact angle directly at the High Voltage Engineering Laboratory of the University of Brawijaya, with the experiment voltage varying between 2 kV, 4 kV, 6 kV, 8 kV, 10 kV, 12 kV, and 14 kV. The experiment begins with determining the value of each insulator, specifically before and after the hydrophobic coating, tested in dry and wet conditions with wetting discharge variations of 10, 30, and 60 mL/s, which corresponds to the trend of rainfall in Indonesia. The study's findings include knowing the level of leakage current in each insulator, particularly when comparing dry conditions and the presence of wet conditions with an increase in wetting discharge so that the surface resistance and power loss caused by the insulator are known. According to the study's findings, the addition of coating reduces leakage current, and the greater the addition of the number of fins, the lower the level of leakage current. Furthermore, the leakage current is affected by the wetting discharge, with the increase in the insulator's level leakage current being directly proportional to the addition of wetting discharge. Keywords — polyethylene isolator, corner contact, hydrophobic, flashover, leakage current, wet and dry conditions
ANALISIS EFISIENSI PENGUNAAN KAPASITOR BANK TERHADAP PERBAIKAN FAKTOR DAYA DAN JATUH TEGANGAN PADA HOTEL GRAND DAFAM YOGYAKARTA Lukman Darmawan; Moch. Dhofir; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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This research discusses about analysis of the use of capacitor banks for power factor improvement and voltage drop at Grand Dafam Hotel Yogyakarta. For simulation of analysis, researchers used a software called ETAP, Based on the Analysis, The reactive power required at the Grand Dafam Yogyakarta Hotel to improve the power factor to 0.96 is 478.513 kVAR under maximum loadconditions, while on February 24, 2023 it only requires reactive power of 291.92 kVAR. The use of capacitor banks can reduce voltage losses by 1-3% from before the capacitor bank. because the higher the power factor results in a smaller current so that voltage losses will decrease. The total cost of the Grand Dafam Yogyakarta Hotel electricity bill for 1 month before installing the capacitor bank is estimated at Rp35,710,845,732, while after installing the capacitor bank the electricity bill is Rp26,032,673,052 This is because there is no kVARH penalty that has been set according to PLN rules. Keywords : Capacitor Bank, Power Factor, Voltage Drop, Current, Power Loss, Economic Analysis, ETAP
IMPLEMENTASI MAXIMUM POWER POINT TRACKING DENGAN METODE INCREMENTAL CONDUCTANCE DAN HILL CLIMBING UNTUK PENGISIAN BATERAI DARI SISTEM PHOTOVOLTAIC Nadia Kusuma Putri; Rini Nur Hasanah; Moch. Dhofir
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Renewable energy is an alternative energy as a substitute for fossil fuels, one of which is solar energy. The problems with photovoltaic technology are low energy conversion efficiency and inconsistent solar radiation. So that from these problems it is necessary to optimize the output power of solar panels using Maximum Power Point Tracking (MPPT) which works by tracking the maximum power point that can be generated by the solar panel system and keeping it always working at that point. In this study, this MPPT Solar Charge Controller uses a Buck-Boost Converter, as well as Incremental Conductance and Hill Climbing as control methods. Both of these methods will be analyzed by comparing the increase in output power through MATLAB Simulink software simulation. Based on the results obtained from the simulations and calculations using the two MPPT methods, it was found that there was an increase in the output power of the solar panel system by 31.17W or 56.9% for the Incremental Conductance method and 7.23W or 13.2% for the Hill Climbing method, compared to PV systems without using MPPT. Index Terms--Photovoltaic System, Power Optimization, MPPT, Incremental Conductance, Hill Climbing, Buck-Boost Converter
Co-Authors A. Ihsanul Amal Bagas Azzanazaki Nurbyantoko Bagus Ramadhan Bella Aisya Rohmawati Eka Maulana Faisal Shidqi Fransiskus X. H. Keraf Ikhsaniyusuf Alfiansyah Putra Ivan Aditya Chrissanto Lisan Shidqi Hady Lukman Darmawan Lunde Ardhenta Mohammad Fathurrahman Surya Pratama Muhaammad Naufal Harist Muhammad Fadhli Dzil Ikram n/a Nurussa’adah n/a Rizaq Nadia Kusuma Putri Rini Nur Hasanah Sabila Azmil Khaqqi Teguh Utomo Tri Nurwati Unggul Wibawa