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All Journal Bulletin of Electrical Engineering and Informatics ELPOSYS: Jurnal Sistem Kelistrikan Jurnal Pengabdian Kepada Masyarakat
Sutjipto, Rachmat
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Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Social Sciences Other

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Analisis Kinerja Sistem Proteksi Berdasarkan Peramalan Beban Pada Penyulang Galunggung Mochammad , Mieftah; Bakti Indra Kurniawan; Ridzki , Imron; Sutjipto, Rachmat
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 3 (2023): ELPOSYS vol. 10 no. 3 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i3.4582

Abstract

The Galunggung feeder has a total line length of 10.68 kilometers and is supplied by power transformer number 1 at the Polehan substation, with a capacity of 30 MVA. As of December 2020, the peak load on the Galunggung feeder was recorded at 231.4 A, while the lowest load was 133.9 A. Up to the current condition, the Galunggung feeder is operating within standard parameters, with a voltage drop of 0.434 kV or 2.17%. However, it is possible that with future developments and an increase in the number of customers over the years, the energy demand will also increase. Due to this additional energy demand, the protection system may require adjustments to accommodate the increased load.After conducting load forecasting using simple linear regression, a forecast for the next 10 years was obtained. In the year 2030, it is anticipated that the Galunggung feeder will experience a 24% increase in load. With this load increase and no changes to transformers or conductors, there will be no alterations to impedance and short-circuit current calculations. Therefore, no protection setting adjustments are necessary. The recommended action would be to upgrade some transformers that are approaching their capacity limits.
Fault diagnosis of power transformer using random forest based combined classifier Prasojo, Rahman Azis; Sutjipto, Rachmat; Hanif, Muhammad Rafi; Dermawan, Chalvyn Rahmat; Kurniawan, Indra
Bulletin of Electrical Engineering and Informatics Vol 14, No 1: February 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v14i1.7471

Abstract

In the power system, transformers are crucial electrical equipment that require an insulator or dielectric material, such as paper immersed in insulating oil, to prevent electrical contact between components. The dissolved gas analysis (DGA) test is important for diagnosing and determining the maintenance recommendations for transformers. The duval triangle method (DTM) is commonly used to identify faults in transformers. The data used in this article are from DGA test of power transformers in East Java and Bali transmission main unit (UIT JBM). The DGA data were analyzed based on the IEEE C57.104-2019 standards, and by using the developed random forest (RF) classifier-based DTM for easier software implementation and better accuracy. The results of fault identification in 6 transformers case study showed a low-thermal fault (T1)300 °C in transformer 1, where methane gas increased, stray gassing (S) in transformer 5 due to escalating hydrogen gas production, overheating (O)≤250 °C indicated in transformers 2 and 6 due to rising ethane gas production. Transformers 3 and 4 were found in normal condition. This fault identification is done to enhance the accuracy of maintenance recommendation action based on DGA.
Penerapan Pompa Air Listrik Berbasis Energi Surya Untuk Pemeliharaan Kolam Ikan Di Dusun Klandungan Kabupaten Malang Novfowan, Anang Dasa; Joto, Ruwah; Sungkowo, Heri; Sutjipto, Rachmat; Sukamdi, Sukamdi; Setiawan, Awan
Jurnal Pengabdian kepada Masyarakat Vol. 12 No. 1 (2025): JURNAL PENGABDIAN KEPADA MASYARAKAT 2025
Publisher : P3M Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/abdimas.v12i1.6364

Abstract

Penerapan pompa air listrik berbasis energi surya pada kolam ikan di Dusun Klandungan, Kabupaten Malang. Melibatkan pendekatan berkelanjutan dan ramah lingkungan, pemasangan berfokus pada penggunaan energi surya sebagai sumber daya utama untuk mengoperasikan pompa air dalam rangka meningkatkan efisiensi pengelolaan kolam ikan. Proses implementasi melibatkan pemasangan panel surya sebagai solusi energi terbarukan yang dapat mengonversi sinar matahari menjadi listrik. Dengan demikian, kolam ikan mendapatkan pasokan air secara teratur tanpa bergantung pada sumber daya listrik konvensional. Pompa ini tidak hanya mengatasi keterbatasan daya listrik di daerah tersebut, tetapi juga mengurangi ketergantungan pada sumber energi non terbarukan. Informasi teknis praktis akan diberikan kepada warga untuk mengelola dan memelihara sistem ini, sehingga mereka dapat merasakan manfaatnya dalam jangka panjang. Selain itu, kegiatan ini juga berpotensi memberikan contoh bagi masyarakat setempat tentang penerapan teknologi berbasis energi surya untuk keberlanjutan pertanian dan akuakultur. Dengan cara ini, kegiatan ini tidak hanya memberikan manfaat langsung pada tingkat lokal, tetapi juga berkontribusi pada peningkatan kesadaran dan adopsi teknologi berkelanjutan di komunitas yang lebih luas. Evaluasi akan dilakukan untuk memastikan keberlanjutan dan efektivitas penggunaan pompa air listrik energi surya ini.
Co-Authors Awan Setiawan Bakti Indra Kurniawan Berlian Suryaningtyas, Florentina Dermawan, Chalvyn Rahmat Dhesah Kharisma, Dhimas Hanif, Muhammad Rafi Hermawan, Ahmad Indra Kurniawan Irmadhani Hidayat, Shafira Joto, Ruwah Kurniawan, Bakti Indra Mochammad , Mieftah Novfowan, Anang Dasa Nurhadi, Slamet Prasojo, Rahman Azis Ridzki, Imron Sukamdi Sungkowo, Heri Syamsuri , Tresna Umar