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All Journal Jurnal Edukasi Elektro ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika International Journal of Renewable Energy Development
Mulyana, Iwa Garniwa
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Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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A systematic decision-making approach to optimizing microgrid energy sources in rural areas through diesel generator operation and techno-economic analysis: A case study of Baron Technopark in Indonesia Prawitasari, Adinda; Nurliyanti, Vetri; Putri Utami, Dannya Maharani; Nurdiana, Eka; Akhmad, Kholid; Aji, Prasetyo; Syafei, Suhraeni; Ifanda, Ifanda; Mulyana, Iwa Garniwa
International Journal of Renewable Energy Development Vol 13, No 2 (2024): March 2024
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2024.59560

Abstract

Microgrid systems are part of the most reliable energy supply technologies for rural communities that do not have access to electricity but the system is generally dominated by diesel generators (DG). The implementation of de-dieselization programs to ensure efficient diesel operations requires addressing several scenarios such as the replacement of diesel completely with 100% renewable energy sources at a significant cost. The design and selection of appropriate configuration, as well as operating patterns, need to be considered in adopting economical and reliable microgrid systems. Therefore, this study aimed to design an optimal configuration and operational pattern for microgrid systems for the frontier, outermost, and least developed (3T) regions using Baron Techno Park (BTP) in Indonesia as a case study. The optimization was conducted through HOMER software combined with benefit-cost analysis and the focus was on daily load variations, selection of control algorithms, reconfiguration of the power supply system, and setting of the diesel generator operating hours. The results showed that the optimum configuration was achieved using loads of resort, 24 kWp of PV, 288 kWh of BESS, load-following (LF) as dispatch controller, and 25 kVa of DG. Moreover, the proposed microgrid system produced 12% excess energy, 36% renewable fraction (RF), 13.25 tons reduction in CO2 emissions per year, $0.28 LCOE per kWh, $250,478 NPC, and a benefit-cost ratio (BCR) of 0.89. It also had a potential energy efficiency savings of 55.56% and a cost efficiency of 20.95% compared to existing system configurations. In conclusion, the study showed that the addition of DG to microgrid systems in 3T areas was more optimal than using only PV and batteries. An effective operating schedule for the DG was also necessary to improve RF and reduce expenses. Furthermore, other energy storage devices considered less expensive than batteries could be introduced to improve the economics of microgrid systems in the 3T region.
The Influence of Olive Oil Additive on Sunflower Seed Oil to Improve The Breakdown Voltage of Insulation Oil CHRISTIONO, CHRISTIONO; FIKRI, MIFTAHUL; MULYANA, IWA GARNIWA; ABDUH, SYAMSIR; MAURIRAYA, KARTIKA TRESYA; FAHRI, MUHAMMAD
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 3: Published July 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i3.701

Abstract

ABSTRAKTegangan tembus isolasi minyak yang baru adalah sebesar >=30kV/2,5mm. Sesuaidengan standar IEC 601-56:2018. Minyak biji bunga matahari dipilih sebagaialternatif karena harganya terjangkau dan mudah diperoleh, akan tetapi minyakbiji bunga matahari murni belum memenuhi standar IEC 61099:2010, dalammemenuhi standart tersebut dibutuhkan zat adiftif untuk meningkatkan nilaitegangan tembus isolasinya. Tujuan dari penelitian ini adalah untuk meningkatkantegangan tembus isolasi minyak bunga matahari setelah ditambahkan aditiveminyak zaitun untuk meningkatkan kemampuan isolasi, mengikuti standar IEC61099:2010. Hasil penelitian menunjukkan bahwa minyak biji bunga mataharimempunyai nilai tegangan tembus sebesar 30,9 kV. Namun, setelah ditambahkanaditif minyak zaitun dengan perbandingan 60:40, nilai tegangan tembus meningkatmenjadi 50,3 kV. Sehingga hasil pengujian minyak biji bunga matahari yangditambahkan minyak zaitun memenuhi standar tersebut.Kata kunci: Minyak Isolasi, Minyak Bunga matahari, aditif, Tegangan TembusABSTRACTThe new oil insulation breakdown voltage is >=30kV/2.5mm. Compliant with IEC601-56:2018 standards. Sunflower seed oil was chosen as an alternative becauseit is affordable and easy to obtain, however, pure sunflower seed oil does not meetthe IEC 61099:2010 standard, to meet these standards additives are needed toincrease the value of the insulation breakdown voltage. This research aims toincrease the insulation breakdown voltage of sunflower oil after adding olive oiladditives to increase its insulating ability, following the IEC 61099:2010 standard.The research results show that sunflower seed oil has a breakdown voltage valueof 30.9 kV. However, after adding olive oil additives in a ratio of 60:40, thebreakdown voltage value increased to 50.3 kV. So that the test results forsunflower seed oil added with olive oil meet the standards outlined.Keywords: Insulation Oil, Sunflower Seed Oil, additive, Breakdown Voltage
Optimasi Dielektrika Isolator Polimer Silicone Rubber menggunakan Bahan Pengisi Limbah Coal Fly Ash THAHARA, ANDI AMAR; FATAH, MARTIN CHOIRUL; MULYANA, IWA GARNIWA; TIO, CHRISTIONO; FIKRI, MIFTAHUL
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 11, No 4: Published October 2023
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v11i4.1075

Abstract

ABSTRAKBerdasarkan penelitian dengan judul “Electrical and Mechanical Properties of Fly Ash Filled Silicone Rubber for High Voltage Insulator” oleh Manjang dkk., (2015), telah dilakukan eksperimen uji karakteristik dielektrika fly ash sebagai filler pada isolator Silicone Rubber (SiR), namun belum adanya analisa optimasi komposisi kadar fly ash yang dilakukan, sehingga belum diperoleh nilai rekomendasi komposisi terbaik. Oleh karena itu, tujuan pada penelitian ini dilakukan studi lebih lanjut untuk menentukan nilai optimasi dari jenis komposisi pemanfaatan fly ash sebagai filler pada isolator SiR dengan metode analisa regresi kuadratik dan memperoleh model kuadrat komposisi fly as yang mengoptimalkan kekuatan dielektrika. Hasil optimasi komposisi fly ash pada pengujian sifat hidrofobik sebesar 20.69% dari komposisi fly ash dan pengujian permitivitas relatif sebesar 80% dari komposisi fly ash.Kata kunci: fly ash batu bara, filler, optimasi, regresi kuadratik, silicone rubber ABSTRACTBased on research entitled "Electrical and Mechanical Properties of Fly Ash Filled Silicone Rubber for High Voltage Insulators" by Manjang et al., (2015), experiments have been carried out to test the dielectric characteristics of fly ash as a filler on Silicone Rubber (SiR) insulators, but there is no the optimization analysis of the composition of the fly ash content was carried out, so that the best composition recommendation value has not been obtained. Therefore, the aim of this research is to conduct further studies to determine the optimization value of the type of composition utilizing fly ash as filler in SiR insulators using the quadratic regression analysis method and obtain a quadratic model of fly ash composition that optimizes dielectric strength. Optimization results of the fly ash composition in testing the hydrophobic properties of 20.69% of the fly ash composition and relative permittivity testing of 80% of the fly ash composition.Keywords: coal fly ash, filler, optimization, quadratic regression, silicone rubber
Optimization of Hybrid Power Plant System to Increase Reliability by Maximizing Renewable Energy (Case Study: Semau Island) Utami, Ananda Rizky; Mulyana, Iwa Garniwa
Jurnal Edukasi Elektro Vol. 8 No. 2 (2024): Jurnal Edukasi Elektro Volume 8, No. 2, November 2024
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v8i2.70933

Abstract

Semau Island is one of the islands in the 3T region. Semau Island's electricity system is supplied by 5 diesel engines, Solar Power Plant, and battery storage, with a renewable energy mix that reaches 13%. This is not in accordance with the target renewable energy mix in Indonesia in 2025 which is 23%. The generation operation pattern applied on Semau Island experiences blackouts due to intermittent conditions when the Solar Power Plant fully supplies the load during the day and the battery is unable to back up. So, to mitigate the intermittency nature of the Solar Power Plant while still increasing the penetration of renewable energy, it is necessary to optimize the integrated generation operation pattern between the Solar Power Plant, the diesel engine and the battery storage. In this research, optimization is carried out using HOMER software. The HOMER application uses a derivative-free algorithm in the HOMER Optimizer feature to find the cheapest system. The optimization results in the existing scenario found that the use of 2 diesel engines, namely DG Mdec, DG Adec in base load operations and a combination of PV and batteries can optimize the operating pattern with NPC costs of $9762426, O&M costs of $583589 and LCOE value of $0.1999/kWh.
Co-Authors Christiono, Christiono Eka Nurdiana Fatah, Martin Choirul Fikri, Miftahul Fikri, Miftahul Ifanda, Ifanda Kartika Tresya Mauriraya Kholid Akhmad, Kholid Muhammad Fahri, Muhammad Nurliyanti, Vetri Prasetyo Aji Prawitasari, Adinda Putri Utami, Dannya Maharani Syafei, Suhraeni Syamsir Abduh THAHARA, ANDI AMAR TIO, CHRISTIONO Utami, Ananda Rizky