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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
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Articles 17 Documents
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Search results for , issue "Vol. 12 No. 6 (2024)" : 17 Documents clear
Analisis Pengaruh Suhu Terhadap Nilai Tegangan Tembus pada Minyak Kacang Tanah Sebagai Isolasi Cair Setiawan, Aditya Rizky; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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This journal discusses the effect of temperature on the breakdown voltage value of peanut oil to determine the suitability of peanut oil as a liquid insulation in high voltage equipment. The temperature increase is done by heating the oil to a predetermined temperature, namely 24.5 ° C (room temperature), 40 ° C, 50 ° C, 60 ° C, and 70 ° C. Electrical testing (a series of breakdown voltage tests), physical (by testing water content using the gravimetric method carried out at the Chemical Engineering Laboratory, Brawijaya University), and calculating the conductivity value (by measuring leakage current using a DC circuit) and permittivity (using an LCR multimeter). The test was carried out to determine the suitability of peanut oil as an insulating oil. The test results showed that the breakdown voltage values of peanut oil at temperatures of 24.5°C (room), 40°C, 50°C, 60°C, and 70°C were respectively 18.36 kV, 19.06 kV, 23.2 kV, 28.18 kV, and 33.95 kV. In the water content test, the values of peanut oil at 24.5°C (room) and peanut oil at 70°C were 993.6 ppm and 486.6 ppm, respectively. In the conductivity test, the values of peanut oil at 24.5°C (room) and peanut oil at 70°C were 21.23× 10^(-9) S/m and 18.22× 10^(-9) S/m, respectively. The results of the relative permittivity test obtained the values of peanut oil at 24.5°C (room temperature) and peanut oil at 70°C were 2.49 and 2.89, respectively. It can be concluded that the effect of increasing temperature can increase the breakdown voltage value of peanut oil, however, from the test data that meets the SPLN 49 standard in 1982, which is 30kV/2.5mm, peanut oil at a temperature of 70°C with a voltage value of 33.95 kV/2.5mm, while at other temperatures it has not met the SPLN 49 standard in 1982. When viewed from the water content level, peanut oil has not met the maximum standard permitted by SPLN 49 in 1982, which is 30 ppm. Keywoards: Breakdown voltage, water content, conductivity, relative permittivity, insulating oil, peanut oi
RANCANG BANGUN SISTEM PENGENDALIAN INTENSITAS CAHAYA PADA SMART GREEN HOUSE UNTUK BUDIDAYA TANAMAN PAPRIKA MENGGUNAKAN FUZZY LOGIC Marcia, Hadrian Wijaya; Nusantoro, Goegoes Dwi; Yudaningtyas, Erni
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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This study aims to design and evaluate a light intensity control system for a smart greenhouse using Fuzzy Logic to support the cultivation of paprika (Capsicumannuum). Paprika requires a specific light intensity of approximately 3500 lux for optimal growth; however, tropical conditions in Indonesia often result in excessive or fluctuating light intensity, hindering photosynthesis. The system was developed using a BH1750 sensor, ESP-32 microcontroller, AC Light Dimmer, and LED Grow Lights, integrated with ThingSpeak for real-time data monitoring. The control system utilized Mamdani Fuzzy Logic with the centroid defuzzification method. Testing was conducted under disturbance-free conditions and with external disturbances to assess system performance. The results demonstrated that the system effectively maintained the light intensity at the 3500 lux setpoint with a settling time of 120 seconds, a recovery time of 30 seconds, a steady-state error below 5%, and an overshoot of less than 10%. Additionally, the system adapted well to external disturbances, ensuring stable lighting conditions to meet the plants' needs. These findings highlight the effectiveness of Fuzzy Logic in automated light control for smart greenhouses, providing an optimal environment for paprikacultivationIndex Terms— Smart greenhouse, Fuzzy Logic, Paprika, Light Control, BH1750, ESP-32, LED Grow Lights, Thing Speak
ANALISIS KELAYAKAN MINYAK TRANSFORMATOR DIDASARKAN PADA PARAMETER STANDAR MINYAK ISOLASI PADA TRANSFORMATOR DAYA 60 MVA DI GARDU INDUK KILIRAN JAO Fikri, Al Hadi; Dhofir, Moch.; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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Testing and analyzing the condition of power transformer oil is very important to ensure the reliability and optimal performance of the transformer during operation. This research was conducted on the 60 MVA unit 2 power transformer at Kiliran Jao Substation with a focus on testing transformer oil characteristics and dissolved gas analysis (DGA). This transformer has a strategic role in electrical power distribution, where transformer oil is used as an insulating and cooling medium to support optimal device performance. This research consists of several stages. The first stage is a literature study, which is carried out by collecting theories through relevant articles, journals, and previous research to support the research discussion. The second stage is field observation, which is carried out at PT PLN (Persero) UPT Padang to learn how to take oil samples and the parameters tested. The transformer studied was a 60 MVA 150 kV power transformer unit 2 with serial number 3011170055. Furthermore, primary and secondary data were collected. Primary data includes transformer specifications and field test results, while secondary data includes historical data of previous test results. These data are then processed to analyze the physical and chemical condition of the transformer oil and detect dissolved gases that indicate potential internal faults. The data obtained was evaluated by comparing it against the IEEE 2008 standard to determine the operational feasibility of the transformer oil. The DGA test results show that the total combustible gas concentration (TDCG) is at Condition 1, which means the transformer oil is still safe for normal operation. However, there are indications of ethane gas (C₂H₆) in Condition 4, with concentrations exceeding the threshold indicating potential overheating in the temperature range of 300°C to 500°C. Testing the characteristics of transformer oil shows that parameters such as breakdown voltage, moisture content, acid content, viscosity, color, sediment, flash point, and interface tension are in good condition according to applicable standards. In conclusion, although the transformer oil is still suitable for use, intensive monitoring is needed of certain parameters, especially ethane gas, to anticipate the potential for overheating that can interfere with transformer reliability. Routine maintenance and advanced analysis are needed to maintain oil quality and prevent transformer damage, so that the operational sustainability of the power distribution system can be guaranteed. This research emphasizes the importance of periodic testing as a preventive measure to improve electrical system reliability.Keywoards: Analysis, Dissolved Gas Analysis, Characteristics, Nynas Nitro Lybra oil
PERENCANAAN PLTS ON-GRID BERDASARKAN PROFIL KONSUMSI ENERGI BERBASIS PVSYST PADA RUMAH KOS SEMBILAN KAMAR DI KOTA MALANG Kurniawan, Ferryo Lenz; Wibawa, Unggul; Wijono, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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The adoption of solar power plants (SPP) has shown an increasing trend in recent years. However, earlier this year, the exportimport mechanism, which had been an attraction for solar power plants installation, was abolished through the Minister of Energy and Mineral Resources Regulation No. 2 of 2024. This means that any excess electricity production generated will no longer be counted as a deduction from electricity bills. With this regulatory change, the sizing of the designed solar power plants capacity needs to be adjusted to avoid excess energy production. Previously, the determination of installed solar power plant capacity was based on the available area or the maximum capacity of the installed customer class. However, now, the determination of installed SPP capacity must be based on electricity consumption during the solar radiation period, where in Malang City, solar radiation intensity is recorded from 6:00 AM to 5:00 PM WIB. The research method involves designing a solar power plant based on the site conditions and electricity needs. The research object is a boarding house located in Lowokwaru, Malang, with nine rooms. There are three potential locations for module installation: a flat roof facing northwest, a sloped roof facing southwest, and a sloped roof facing northeast. One location will be selected based on the highest solar radiation exposure with minimal shading to maximize electricity production. Shading simulation will be conducted using PVsyst 7.4 software. Additionally, the electrical installation for each room will be determined based on load profile derived from the load usage characteristic of each room. Based on simulations and calculations, it was determined that 5 Longi Solar LR5-66HPH-500M G2 500 Wp solar modules and 5 TSUN MS400 Microinverters with a DC/AC ratio of 1.25 will provide a performance ratio of 81.97%, supplying an average of 4,162 kWh annually. The initial capital expenditure for this solar power plant installation is IDR 43,738,989, with a return rate of 13.43% and a break even point achieved after 7 years and 11 months. Based on the feasibility study, the installation of this SPP system is deemed viable and profitable. Keywords— On-grid solar power plant, shading, load profile, economics.
RANCANG BANGUN PROTOTYPE SISTEM KONTROL KECEPATAN MOTOR DC PADA SISTEM PENGADUKAN PROSES KOAGULASIDAN FLOKULASI DALAM PENGOLAHAN AIR BERSIH MENGGUNAKAN KONTROLER PID DIGITAL Setyabudi, Nadya Sekarsari; Rusli, Moch.; Siswojo, Bambang
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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The coagulation and flocculation processes in water treatment systems are influenced by the appropriate mixing speed and time to ensure the uniform distribution of coagulants and flocculants and the optimal formation of flocs. Instability in the agitator motor speed can disrupt process efficiency and the quality of the treated water. Therefore, a DC motor speed control system using a PID (Proportional, Integral, Derivative) controller is designed to maintain stable motor rotation, especially when facing disturbances such as gravel. The system is designed to maintain motor speed according to the desired setpoint, with coagulation processes in the range of 403–670 RPM and flocculation processes in the range of 67 100 RPM. The first modified Ziegler-Nichols tuning method was used to determine the optimal PID control parameters, resulting in values of Kp = 78.6, Ki = 6.5, and Kd = 2. Additionally, an IR-Speed sensor is employed to detect motor rotation speed, which is then displayed via an LCD. Experimental results on raw water with a turbidity of 55 NTU demonstrated that the system could reach a steady state within 2 seconds. No overshoot was observed, and the system achieved a steady-state error (ESS) of 0.14% during slow mixing. The system met the desired performance criteria with a fast steady-state response and adhered to the specified design parameters. The system achieved a turbidity removal efficiency of 82.04%, indicating excellent performance in reducing turbidity and dissolved particles in the water. These findings confirm that the implemented control system effectively fulfills its intended purpose of producing water suitable for further treatment for daily use, although not for direct consumption as drinking water.Keywords: DC Motor, PID Controller, Coagulation, Flocculation
RANCANG BANGUN MONITORING DENGAN METODE KLASIFIKASI ASYMMETRY INDEX BAGI PENDERITA TEMPOROMANDIBULAR DISORDER TERINTEGRASI INTERNET OF THINGS Bagasunni’am, Moh. Hibaturrohman; Nurussa’adah, n/a; Purnomowati, Endah Budi
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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Temporomandibular Disorder (TMD) is a condition that causes pain in the orofacial area and musculoskeletal system with a prevalence of 5% to 12% in adults. TMD is common due to lack of awareness of the disease, even though its impact can severely disrupt the daily activities of the sufferer. It can cause periodic or constant pain in the stomatognathic system, namely the Temporomandibular Joint (TMJ) which is the most frequently used part of the body (eating and speaking), patients can experience limited jaw motion, impaired joint function, muscle pain, joint pain, facial pain, and pain when opening the jaw. The sooner it is detected, the faster the treatment for this disease. However, the frequency of monitoring TMJ health conditions is rarely done. Currently, the only methods used are Xray diagnosis or panaromic radiography and the resulting data does not always provide accurate information. When viewed from an economic point of view, the cost required for detection is considered quite expensive and requires a long process. Through these problems, technology is needed that can detect the patient's condition non-invasively and routinely. The technology needed can mainly record the activity of the masseter and temporalis muscles by utilizing Electromyography (EMG) sensors that can be connected to an Android-based monitoring application. And can provide a classification of the severity of the patient with the Asymmetry Index method and provide education in reducing these risk factors. This innovation has been tested on 15 patients with a classification accuracy rate of 86.7% compared to the results of the doctor's diagnosis. In testing the system monitoring application, the average data transmission time is faster using the 5 GHz network than 2.4 GHz, but the difference is very small and almost invisible, namely 0.255 seconds. These results show that this TMD monitoring tool is effective for detecting and monitoring TMD conditions on an ongoing basis, reducing dependence on invasive methods and assisting users in classifying TMD conditions.Keywords : Temporomandibular Disorder (TMD), Internet of Things, Asymmetry Index, Electromyography (EMG), Monitoring
Analisis Keandalan Sistem Distribusi 20kV pada Penyulang CMK PT. PLN (Persero) ULP Prima Priangan dengan Metode RIA (Reliability Index Assessment) Malamansyah, Triamelia Salsabila; Wibawa, Unggul; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
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Perkembangan zaman membawa masyarakat ke era modern di mana listrik berperan penting dalam mendukung produktivitas karena sifatnya yang fleksibel dan mudah ditransmisikan. Ketergantungan yang tinggi pada listrik meningkatkan tantangan menjaga keandalan sistem distribusi. Kota Bandung, dengan luas 167,31 km² dan kepadatan penduduk tinggi, memiliki kebutuhan distribusi listrik yang kompleks. Penelitian ini fokus pada Penyulang Cigereleng Mahameru Kuning (CMK) PT. PLN (Persero) ULP Prima Priangan, dengan panjang 3,901 kms dan 10 pelanggan industri besar, karena tingginya pemakaian daya dan gangguan yang berpotensi merugikan. Tujuan penelitian adalah menghitung indeks keandalan (SAIFI dan SAIDI) Penyulang CMK menggunakan metode RIA (Reliability Index Assessment) dan simulasi ETAP 19.0.1, menentukan ENS (Energy Not Supplied), serta menghitung kerugian ekonomi untuk dibandingkan dengan standar SPLN 59 tahun 1985. Hasil menunjukkan nilai SAIFI 2,342851 gangguan/tahun dan SAIDI 7,4028 jam/tahun (metode RIA), serta SAIFI 2,4233 gangguan/tahun dan SAIDI 7,6043 jam/tahun (simulasi ETAP). ENS tercatat sebesar 57.826,7661 kWh dengan kerugian ekonomi mencapai Rp80.890.611,12. Selisih indeks keandalan SAIFI dan SAIDI antara kedua metode adalah 6,71% dan 4,68%. Penelitian menyimpulkan bahwa indeks keandalan Penyulang CMK belum memenuhi standar SPLN 59 Tahun1985. Kata Kunci— Indeks keandalan, Energy Not Supplied (ENS), RIA (Reliability Index Assessment), ETAP 19.0.1.

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