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All Journal Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Media Elektro : Journal of Electrical Power, Informatics, Telecommunication, Electronics, Computer and Control System Jurnal Pengabdian kepada Masyarakat Nusantara Hexatech: Jurnal Ilmiah Teknik International Journal of Electrical, Computer, and Biomedical Engineering (IJECBE)
Agus Indarto
Program Magister Teknik Pengairan Fakultas Teknik Universitas Brawijaya Malang
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Transportation

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Kajian Potensi Sungai Srinjing Untuk Pembangkit Listrik Tenaga Mikrohidro (Pltmh) Brumbung Di Kabupaten Kediri Indarto, Agus; Juwono, Pitojo Tri; Rispiningtati, Rispiningtati
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.764 KB)

Abstract

MHP Brumbung is located at upstream of Srinjing River. Potential discharge MHP Brumbung depends on the discharge of the gate 1 operation of Siman dam which is used to irrigate 4852 Ha Siman crop area.To obtain the optimal scale in the construction of the MHP to be optimized flow generation and generating units in order to obtain an economical MHP. Dependable discharge optimization results are used as a basic for discharge planning of Brumbung MHP is discharge with 75% probability that is equal to 3.394 m3/dt with the discharge for one unitinstalled capacity is equal to 1.697 m3/dt and installed capacity of 50 kW,with fluctuating effective head ranged from 4.944 m to 5.140 m, the annual energy production obtained 875,785.980 kWH for two generating units with a turbines Crossflow.Keywords: Micro hydropower, discharge optimization, installed capacity
DESAIN TRAFO DAYA MENGGUNAKAN STUDI MINYAK BIODEGRADABLE UNTUK KEBERLANJUTAN Indarto, Agus; Bohra, Arunkumar; Wahyudi, Slamet; Dharmanto, Asep
Jurnal Media Elektro Vol 13 No 2 (2024): Oktober 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jme.v13i2.18316

Abstract

To achieve net carbon zero in the electrical transmission and distribution industry, advancements in design, manufacturing, and materials are essential, particularly for power transformers. Traditional mineral oil, used for insulation and cooling, poses environmental challenges due to its non-biodegradability, low fire point, and lack of eco-friendliness. Alternative insulating fluids, both synthetic and natural esters, offer improved fire safety and environmental compatibility. Recent research has enhanced understanding of ester fluids' electrical, thermal, and chemical properties, yet adoption is hindered by limited research, unestablished testing methods, and experience. This study explores the design and manufacturing challenges of power transformers using ester insulating oil compared to those filled with mineral oil, focusing on weight, dimensions, cost, and the impact of smart monitoring systems on performance, longevity, maintenance, and reliability. The study also examines the influence of renewable energy and micro-grids on the design and manufacturing of ester oil-filled transformers. This comparison aims to guide both customers and manufacturers in evaluating the suitability of ester-filled transformers for specific applications, ultimately contributing to more informed decision-making and advancing the industry's sustainability goals.
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.
Peningkatan Kesehatan Mental Anak melalui Terapi Kelompok Terapeutik di SDN 2 Tegalsari, Kabupaten Pringsewu Ardinata, Ardinata; Mesya, Mesya; Muhka, Reni; Nur, Sulistia; Al Farisi, Muhammad Farhan; Indarto, Agus; Fiana, Marista; Priyana Putra, Rausan Fikri; Kaligis, Yosua Aldrin; Rezeki, Muhamad Alif
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 6 No. 2 (2025): Jurnal Pengabdian kepada Masyarakat Nusantara Edisi April - Juni
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v6i2.5880

Abstract

Gangguan mental emosional pada anak usia sekolah menjadi perhatian utama karena dapat memengaruhi perkembangan mereka secara menyeluruh, termasuk dalam aspek pendidikan, interaksi sosial, dan kemampuan menghadapi berbagai tantangan hidup. Terapi Kelompok Terapeutik (TKT) merupakan salah satu metode intervensi yang dapat secara optimal menstimulasi perkembangan mental anak. Kegiatan Pengabdian Masyarakat ini bertujuan untuk mengevaluasi efektivitas TKT dalam meningkatkan perkembangan mental anak usia sekolah di SDN 2 Tegalsari, Kabupaten Pringsewu, Provinsi Lampung. Program ini dilaksanakan melalui pendekatan intervensi berbasis TKT yang melibatkan 30 siswa kelas 6. Pelaksanaannya terdiri dari tiga tahap utama, yaitu persiapan, pelaksanaan, dan evaluasi. Intervensi diberikan dalam enam sesi, yang mencakup stimulasi pada aspek perkembangan industri, motorik, kognitif dan bahasa, emosi dan kepribadian, moral dan spiritual, serta psikososial. Evaluasi dilakukan dengan membandingkan kondisi perkembangan anak sebelum dan sesudah intervensi. Hasil sebelum intervensi, persentase anak dalam kategori perkembangan "baik" berkisar antara 60% hingga 73,3%, dengan perkembangan psikososial sebagai aspek tertinggi (73,3%) dan perkembangan emosi serta kepribadian sebagai aspek terendah (60%). Setelah intervensi, terjadi peningkatan signifikan di semua aspek, dengan mayoritas anak mencapai kategori "baik" (90%-96,7%). Peningkatan tertinggi terjadi pada aspek moral dan spiritual (96,7%), sementara perkembangan psikososial menunjukkan peningkatan terendah namun tetap signifikan (90%). Terapi Kelompok Terapeutik terbukti efektif dalam meningkatkan perkembangan mental anak usia sekolah. Implementasi program serupa di masa mendatang dapat mendukung peningkatan keterampilan sosial, pengelolaan emosi, serta penguatan karakter anak secara lebih optimal.
Trafo daya menggunakan minyak isolasi yang dapat terurai secara biologis Indarto, Agus; Bohra, Arunkumar; Wahyudi, Slamet; Dharmanto, Asep
Hexatech: Jurnal Ilmiah Teknik Vol. 2 No. 2 (2023): Hexatech: Jurnal Ilmiah Teknik
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/hexatech.v2i2.892

Abstract

Desain, proses manufaktur, dan teknologi material baru yang ramah lingkungan diadopsi oleh industri transmisi dan distribusi listrik karena meningkatnya permintaan untuk emisi karbon nol untuk mencapai praktik berkelanjutan dan melindungi lingkungan dengan lebih baik. Trafo daya memainkan peran penting dalam sistem transmisi dan distribusi. Meningkatkan dampak lingkungan dari transformator daya dimungkinkan karena sifat-sifatnya, seperti keamanan kebakaran yang lebih tinggi, bahan yang dapat terurai secara hayati atau dapat didaur ulang, dan pemanfaatan aset yang optimal. Studi yang lebih baru telah membantu produsen untuk lebih memahami sifat listrik, termal, dan kimiawi cairan ester. Studi ini meneliti desain transformator daya yang menggunakan minyak isolasi biodegradable (berbasis ester) dan membandingkan desainnya dengan yang menggunakan minyak mineral dengan peringkat yang sama. Metodologi yang digunakan adalah studi kasus desain pendingin udara 60MVA 275/33 kV dan studi perbandingan dengan desain oli mineral. Perbandingan antara transformator dan transformator yang diisi dengan oli mineral konvensional didasarkan pada pendinginan, dielektrik, dan dimensinya. Hasil penelitian menunjukkan bahwa pendinginan membutuhkan kapasitas yang lebih besar serta dimensi transformator daya. Desain dielektrik tidak memiliki perbedaan yang signifikan di antara keduanya.
Co-Authors Al Farisi, Muhammad Farhan Ardinata, Ardinata Bohra, Arunkumar Dharmanto, Asep Fiana, Marista Hudaya, Chairul Husnayain, Faiz Kaligis, Yosua Aldrin Khusuma, AB Rendra Mesya, Mesya Muhka, Reni Nur, Sulistia Pitojo Tri Juwono Priyana Putra, Rausan Fikri Rezeki, Muhamad Alif Rispiningtati Rispiningtati Rudy Setiabudy Slamet Wahyudi