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All Journal JTEV (Jurnal Teknik Elektro dan Vokasional ELKHA : Jurnal Teknik Elektro Widyariset JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknologi JISIP: Jurnal Ilmu Sosial dan Pendidikan Jurnal TAMBORA JIIP (Jurnal Ilmiah Ilmu Pendidikan) Widyariset Brilliance: Research of Artificial Intelligence Leuser Journal of Environmental Studies International Journal of Electrical, Computer, and Biomedical Engineering (IJECBE)
Hudaya, Chairul
Department Of Electrical Engineering, Engineering Faculty, Universitas Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Social Sciences Other

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Optimizing Potential Supply Chain of Biomass Agricultural Waste for Co-firing of Coal Power Plant Using MCDA, GIS, and Linear Programming in the Java and Sumatra Islands, Indonesia Ahmudi, Ali; Hudaya, Chairul; Garniwa, Iwa; Amraini, Said Zul; Sugiyono, Agus; Semedi, Jarot Mulyo; Sidqi, M. Ahsin; Daulay, Andini Dwi Khairunnisa; Yumnaristya, Syefiara Hania
Leuser Journal of Environmental Studies Vol. 3 No. 1 (2025): April 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v3i1.249

Abstract

The development of renewable energy is a key priority for the Indonesian government and many other nations. Utilizing biomass as a co-firing fuel in coal-fired power plants (PLTUs) offers a viable pathway to meet renewable energy targets in the electricity sector. Co-firing technology involves substituting coal with biomass at specific ratios while maintaining the operational quality and efficiency of the power plants. Indonesia plans to implement a co-firing program in 114 PLTUs, with a combined capacity of 18.1 GW, requiring approximately 9 million tons of biomass annually. This study aims to develop a biomass supply chain model for co-firing, focusing on transportation cost optimization. Geographic Information Systems (GIS), Multi-Criteria Decision Analysis (MCDA), and Linear Programming are employed to map biomass potential from agricultural waste, identify optimal storage and factory locations, calculate the shortest distances to PLTUs, and design an efficient supply chain. Key biomass sources considered include agricultural waste from rice, corn, cassava, palm oil, coconut, sugarcane, and rubber. The study concentrates on co-firing in the Java and Sumatra regions, which house 14 and 12 PLTUs, respectively. Assuming a 5% biomass mix, the total annual bio-pellet demand is estimated at 3.34 million tons. By contrast, the annual production capacity of bio-pellets is calculated to be 143.58 million tons, indicating a surplus supply. Optimization results confirm that the available biomass supply can adequately meet the co-firing requirements for PLTUs in Java and Sumatra. The study also identifies optimal locations for storage facilities and bio-pellet factories near PLTU sites, enhancing supply chain efficiency. By integrating data on biomass potential, storage, factory, and PLTU locations, this research facilitates the design of an effective and efficient biomass supply chain, contributing to the broader goal of renewable energy development.
Comparative Analysis of Breakdown Voltage, Temperature Rise, and Production Cost of Using Mineral Oil and Synthetic Ester in 33 MVA 132/33 kV Power Transformers Khusuma, AB Rendra; Indarto, Agus; Hudaya, Chairul; Setiabudy, Rudy; Husnayain, Faiz
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 3 No. 2 (2025)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v3i2.139

Abstract

In support of achieving the net zero emission target in the power sector, the selection of environmentally friendly transformer insulating oil is very important. This study presents a comparative analysis of the dielectric and thermal performance between mineral oil and synthetic ester oil. The breakdown voltage (BDV) test was conducted with a variation of rest time of 1 minute and 10 minutes. In addition, temperature rise tests were conducted on a 33 MVA capacity power transformer with a voltage of 132/33 kV. Temperature rise testing is carried out on synthetic ester oil and mineral oil through thermal simulation with identical transformer specifications, the goal is that there are no distinguishing variables in the test. The test results show that at a rest time of 1 minute, synthetic ester oil produces fluctuating BDV values, with some data being below the minimum threshold of 60 kV according to IEC 61203 standards. In contrast, mineral oil (MO) showed stable and consistent dielectric performance. At a rest time of 10 minutes, both types of oil showed stable BDV values with low standard deviations. In terms of thermal performance, mineral oil produced a lower temperature rise than synthetic ester oil (SE), indicating better cooling efficiency. The study will also analyze the impact of transformer dimensions due to the different transformer oils used, which will result in the price of the transformer. The findings provide technical insights for manufacturers and users in selecting transformer oils that support environmental sustainability without compromising the reliability of power transformers.
Design and Implementation of the SALUTS System to Support of Improvement of Tourism Transactions and Promotion Akhir Putra, Juniardi; Nuryadi, Halid; Yuliadi, Yuliadi; Mardinata, Erwin; Hudaya, Chairul; Esabella, Shinta; Putra, Ardiansyah; Juliansyah, Ahmad
Brilliance: Research of Artificial Intelligence Vol. 3 No. 2 (2023): Brilliance: Research of Artificial Intelligence, Article Research November 2023
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v3i2.3434

Abstract

This research aims to design and build a tourism system in Sumbawa Regency. In this research is using a qualitative approach that used model of rapid application development (RAD) for system development life circle (SDLC) method. Overall the first stage is system planning, next stage is analyzing tourism data and information that would be presented on web and android technology based. In addition, for users interface display is the attractive database design. The final stage is coding the system and produce a prototype for the implementation which is presenting on the web pages and google play store for android smartphones. The system presented could be used for evaluation, monitoring and facilitating of tourism transaction and promotion processes in Sumbawa Regency.
Co-Authors Achmad Subhan Agus Indarto Agus Sugiyono Ahmad Sohib Ahmudi, Ali Akbar, Iwan Bahyudin Aliyah, Jannatun Amien Rahardjo Anisah Muthi’ah Ardiansyah Putra Ardita, I Made Aryanto, Nova Bambang Prihandoko Bayu Rachmat Burhanuddin Burhanuddin Daulay, Andini Dwi Khairunnisa Diah Anggeraini Hasri Fitri, Ismi Rosyiana Hermanto, Koko Hidayatullah, Mila Husnayain, Faiz Husni Ilma Nuroniah Irawati Irawati Ismiyarti, Wilia Iswandi Imran Iwa Garniwa Jaya, Ahmad Jufri, Fauzan Hanif Juliansyah, Ahmad Juniardi Akhir Putra Khusuma, AB Rendra Ma'arif Hasan Mardinata, Erwin Muhammad Fadillah Ghifari Muhammad Syukron Anshori Nuryadi, Halid Rodianto, Rodianto Rudi Masniadi Rudy Setiabudy Samual, Muhammad Gillfran Semedi, Jarot Mulyo Sherly Novia Sari Shinta Esabella Sidqi, M. Ahsin Slamet Priyono Sumarningsih, Eka Yuni Suzami, Ardi Tambun, Laura Agnes Verdianto, Ariono Wahyu Bambang Widayatno Warih, Gamal Fiqih Handono Yuliadi Yuliadi Yumnaristya, Syefiara Hania