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All Journal Jurnal Ampere Elektrika TEKNIKA JURNAL SURYA ENERGY Jurnal Pengabdian kepada Masyarakat Nusantara Wahana Dedikasi : Jurnal PkM Ilmu Kependidikan Jurnal Pengabdian kepada Masyarakat Jurnal Teknik Elektro Journal of Community Service MASDA Electrician : Jurnal Rekayasa dan Teknologi Elektro International Journal of Electrical Engineering, Mathematics and Computer Science Kemas Journal:Jurnal Pengabdian masyarakat Jurnal Surya Energy Jurnal Pengabdian Kepada Masyarakat (Abdimas) Universitas Baturaja
Abdul Azis
Program Studi Teknik Elektro, Fakultas Teknik, Universitas PGRI Palembang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering 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 Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Transportation Other

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Analysis of the Impact of Load Imbalance on Neutral Current and Power Losses Caused by Neutral Current in Transformer 1, 30 MVA, 70/20 kV at Bungaran Substation Azis, Abdul; Perawati; Yudi Irwansi; Muhammad Rizal
International Journal of Electrical Engineering, Mathematics and Computer Science Vol. 2 No. 3 (2025): September : International Journal of Electrical Engineering, Mathematics and Co
Publisher : Asosiasi Riset Teknik Elektro dan Infomatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/ijeemcs.v2i3.318

Abstract

Power transformers are crucial in the electrical distribution system, and their operational stability is significantly affected by load imbalance among phases. Load imbalance can lead to the flow of neutral current through the neutral conductor, causing additional power losses in the transformer. This study analyzes the impact of load imbalance on neutral current and power losses at Transformer 1 (30 MVA capacity, 70/20 kV) at the Bungaran Substation. Data such as phase current, neutral current, and power losses were measured at 12:00 and 21:00. At 12:00, the transformer’s full-load current was 839.17 A with a loading of 28.44% and a load imbalance of 0.74%, resulting in a neutral current of 4.36 A (1.83% of load current). The power loss due to neutral current was 12.64 W (4.36×10-5 %), and the loss due to neutral current flowing to the ground was 760 W (2.62×10-3 %). At 21:00, the full-load current decreased to 834.46 A, with a loading of 29.36% and a higher load imbalance of 1.36%. This caused a neutral current of 7.94 A (3.24%), with a power loss of 41.90 W (1.43×10-4 %) and a ground power loss of 2.52 W (8.60×10-3 %). The power losses were minimal compared to the transformer’s capacity, having little effect on system efficiency. However, maintaining load balance is essential for system efficiency and transformer longevity.
Co-Authors Alam, Izzul Fazlul aldo fadilaputra Alimin Nurdin Alimin Nurdin Alimin Nurdin Andi Leo Ardianto, Tri Ardius, Enggi Asnurul Isroqmi Azukruf, Fathir Bahrul Ilmi Choirul Rizal Deden Dendi Dendi Indirwan Dendi Irawan Emidiana Emidiana Febrianti, Irine Katika Gagah Mirgawansyah H. alimin Nurdin Irine Kartika Pebrianti Irine Kartika Pebrianti Ismail Ismail Jelita, Puja lingga, Melingga M. Saleh Al Amin M. Saleh Al Amin, M. Saleh Martadinata, Muhammad Rian Melisa Mulyadi Mirgawansyah, Gagah Muhammad Rijaluddin Tahfiz Nisa, Ulfa Lathifatun Nisa, Ulfa lathifatun Nita Nurdiana Novisrayani Kesmayanti Nurdin, Alimin Pauzan, Ahmad Perawati Perawati Perawati, Perawati Perawati, Perawati Prayogi, Ang Anan Rahmanda, Dandy Reksi Anjasmara Reri Aresta Rozal Rhamadhon, Muhammad Syahrul Rozal, Reri Aresta Safta Hastini Sri Maryati Ulfa lathifatun Nisa Wijayanti, Linda Wisnu Wardhana Yudi Irwansi Yudi Irwansi Yudi Irwansi, Yudi