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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
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Articles 23 Documents
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Search results for , issue "Vol. 12 No. 4 (2024)" : 23 Documents clear
PENGUJIAN TEGANGAN TEMBUS BOLAK BALIK PADA BAHAN ISOLASI MINYAK JARAK SEBAGAI ALTERNATIF MINYAK TRANSFORMATOR Syarifasa, Arkananta; Dhofir, Moch.; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

The use of vegetable oil, especially castor oil as liquid insulation, needs to be proven by testing the breakdown voltage anddielectric strength of the oil as liquid insulation to predetermined standards. The test is to determine the breakdown voltageresistance and suitability of castor oil as an alternative liquid insulation for transformer oil in accordance with SPLN (StateElectricity Company Standards) and IEC (International Electrotechnical Commission) standards. The research method in thisstudy is analysis and direct measurement of the variables tested, namely the effect of heating with temperature variations on the breakdown voltage of castor oil. Testing of heating temperature variations on oil shows that there is an increase in the breakdown voltage value of castor oil after being given a directly proportional variation in heating temperature and experiencing a quite significant increase in breakdown voltage.  Keywordrs : Castor oil, Breakdown Voltage, Moisture Content, Permittivity, Conductivity
ANALISIS SETTING RENEWABLE FRACTION PADA DESAIN PEMBANGKIT LISTRIK TENAGA HIBRID (BAYU-SURYA) - STUDI KASUS DI DESA NGIJO KABUPATEN MALANG Mardotillah, Nanda Azizah; Wibawa, Unggul; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Electrical energy is essential in modern life, with per capita electricity consumption in Indonesia continuing to rise as the economy and urbanization grow. While reflecting positive economic development, this also puts pressure on electricity infrastructure, demanding sustainable electricity generation alternatives. Indonesia has great potential for wind and solar energy, yetutilization is still limited. Ngijo Village in Malang Regency is an example of hybrid power plant implementation, but its success depends on settings such as Renewable Fraction (RF). This study evaluates the potential of renewable energy in Ngijo Village in 2023 using HOMER simulation. Data on solar radiation, wind speed, system component costs, and the number of families usingelectricity were used to determine the RF setting. Results show Ngijo Village has a large solar radiation potential, with the highest average of 6.26 kWh/m²/day, and wind speeds of 1-2 m/s. Higher RF increases production from the Hybrid Power Plant (PLTH) and decreases production from the public grid. RF also affects the economics of the plant, with net present cost and annualized cost increasing as RF increases, while cost of energy decrease. However, at 60% RF, the cost of energy increase again. Keywords: Setting Renewable Fraction, PLTH, Wind, Solar, HOMER, Ngijo Village
ANALISIS PENGGUNAAN BATERAI LITHIUM-ION SEBAGAI BATTERY BANK PADA STASIUN PENGISIAN SEPEDA LISTRIK Pratomo, Setyo Fajar; Maulana, Eka; Dhofir, Moch.
Jurnal Mahasiswa TEUB Vol. 12 No. 4 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Lithium-ion is a battery with high-density energy and a lower self-discharge. Moreover, lithium-ion batteries have no memory effect. One of the most used lithium-ion cells is lithium-ion 18650. The Tesla electric cars (model S and X) produced in 2013-2017 consist of a total of 8,256 Panasonic NCR18650B cells which capable to store 100 kWh of power, enabled people to drive up to 482km. Apart from the excellence, the increasing use of lithium-ion batteries in electric vehicles and electronic devices will create a lot of waste when the lithium-ion batteries used are worn out. Hence, this study aims to examine the feasibility of used lithium-ion batteries and reuse them as energy storage at electric bike charging stations in parking lot. The system is designed with a 275WP solar panel to charge the bank battery through the PWM solar charge controller, followed by charging an electric bike battery with the inverter. The battery bank is constructed by 30 cells of 18650 lithium-ion batteries which have already gone through an voltage, capacity, and internal resistance sorting process. The configuration used is the 6 series 5 parallel with charge capacity of each cell is on 2091 – 2366 mAh, resulting in saved energy as much as 243 Wh. The experimental results prove that the designed battery bank can fulfill its function as energy storage in the solar panel system. The time required to charge the bank battery fromempty to full is five hours. Besides, the battery bank is able to provide power through an inverter in order to charge an electric bike battery using a 25.2V 2A adapter. Keywords: 18650 Battery, Electric Vehicle, Lithium-ion, Solar Panel, Charging Station.

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