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All Journal Jurnal Mahasiswa TEUB Jurnal EECCIS Journal of Innovation and Applied Technology Journal of Environmental Engineering and Sustainable Technology Jurnal Teknologi Elektro Jurnal HIDROPILAR
Teguh Utomo
Jurusan Teknik Elektro Fakultas Teknik Universitas Brawijaya
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mechanical Engineering

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Economic Research of Electricity Losses in PLN Due to Theft Differences with Methods Changing MCB and Influencing Measurement in kWh Meter Utomo, Teguh; Ardhenta, Lunde
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 17 No. 1 (2023)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v17i1.1643

Abstract

Today, there were many cases of theft or infringement of electricity in various ways. This was caused PLN to suffer losses due to the theft of electricity amounting to Rp 1.5 trillion per year. Electrical theft focused on kWh meter there were various kinds, such as by changing the side of the MCB and adding a needle on the kWh meter. The objective of this study were found out the recorded kWh ratio if the installation was installed normally with a modified installation by changing on the MCB side, adding a needle, and comparing the economic value that PLN should had obtained when the kWh meter was installed normally and the kWh meter was changed. The method used in the research for normal measurement as much as 6 times the rotation of the disk and used 5 variations of load ; the measurement by changing the MCB and adding the needle was the same as the normal measurement, only when changing the MCB changes 2 A to 4 A, and when adding the needle, the disk was plugged with a needle. The result showed that the average of error difference between kWh meter that was installed normally with that has been changed on the side of MCB is 0, and kWh meter installed with normal that has been changed add needle equal to -44.1586. The difference in total cost of electricity for one month for normal kWh meter with which has been changed on the MCB side was Rp. 165.914.-, and for the normal kWh meter difference with the added needle of Rp. 58.610.
The Analysis of thermal efficiency in Star Energy Gothermal Darajat Pratama, Muhammad Pashya Rifky; Utomo, Teguh; Wibawa, Unggul
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 17 No. 3 (2023)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v17i3.1662

Abstract

After years of operation, the plant will no longer operate optimally according to its design. The practice of the work cycle shows that the original value of thermal efficiency will always be below 100%, this is because during the cycle process of creating work, the energy received by the system by heat transfer will not be fully received and will be absorbed by the environment. In this research, thermal efficiency analysis was carried out in accordance with the first and second laws of thermodynamic efficiency and thermoeconomic calculations to calculate losses. Based on calculations that have been carried out, the thermal efficiency of the Star Energy Geothermal Darajat unit-3 geothermal power plant system is 21.72% with the largest exergy loss being in the condenser component of 62,219,418 kW with an exergy loss cost of 252,766,682.24 Rp/ days and the smallest is in the cooling tower of 599,362 kW with exergy loss costs of 23,655,907.11. Rp/day from the following results it can be seen that this efficiency value depends on the performance of each component.
Perbaikan Rugi-Rugi Daya dan Jatuh Tegangan pada Penyulang Sudan PT PLN ULP Sukorejo Melalui Uprating Kapasitas Transformator Maharani, Bella Fathia; Utomo, Teguh; Wibawa, Unggul
Jurnal Mahasiswa TEUB Vol. 13 No. 6 (2025)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Seiring dengan perkembangan zaman,kebutuhan akan energi listrik terus meningkat. Meningkatnyakebutuhan listrik juga harus diimbangi dengan kapasitassupply yang sesuai dengan kebutuhan tersebut. Kondisipembebanan transformator distribusi yang melebihi kapasitaspada sistem distribusi listrik dapat menyebabkan peningkatanrugi daya dan jatuh tegangan, sehingga menurunkan kualitaspelayanan listrik. Penelitian ini bertujuan untuk menganalisisdampak pembebanan berlebih pada transformator sertamengevaluasi solusi perbaikan melalui dua pendekatan, yaituUprating kapasitas transformator dan penyisipantransformator. Penelitian dilakukan pada Penyulang SudanPT PLN ULP Sukorejo menggunakan simulasi load flowanalysis berbasis software ETAP, serta proyeksi pembebananhingga tahun 2030 dengan metode peramalan eksponensial.Hasil simulasi menunjukkan bahwa saat ini terdapat 9transformator dalam kondisi Overload, di antaranya DJ453(81%), DJ131 (85%), DJ314 (87%), DJ370 (90%), DJ295(92%), DJ050 (95%), DJ472 (107,5%), DJ079 (112%), danDJ077 (135%). Setelah dilakukan Uprating kapasitas, rugidaya aktif menurun dari 53,7 kW menjadi 42,5 kW, rugi dayareaktif dari 80,6 kVAR menjadi 63,7 kVAR, dan jatuhtegangan maksimum dari 3,9% menjadi 1,6%. Sementara itu,penyisipan transformator menghasilkan penurunan rugi dayaaktif dari 53,7 kW menjadi 42,7 kW, rugi daya reaktif dari80,6 kVAR menjadi 64,1 kVAR, dan jatuh tegangan membaikhingga 1,2%. Estimasi pembebanan tahun 2030 menunjukkanadanya 11 transformator yang diperkirakan akan mengalamiOverload. Temuan ini menjadi dasar pertimbangan teknisdalam perencanaan pemeliharaan dan pengembangan sistemdistribusi.Kata Kunci — Transformator Distribusi, TransformatorOverload, Uprating Kapasitas Transformator, SisipTransformator, Peramalan Beban.
PERANCANGAN PEMBANGKIT LISTRIK TENAGA PIKO HIDRO PADA ASPEK MEKANIKAL DAN ELEKTRIKAL : STUDI KASUS DI DUSUN BEGAWAN, PANDANSARI LOR, KECAMATAN JABUNG, KABUPATEN MALANG Saputra, Didit Sugeng; Utomo, Teguh; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 13 No. 6 (2025)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Dusun Begawan, Pandansari Lor, Kecamatan Jabung, Kabupaten Malang memiliki aliran sungai yang panjang, sehingga sungai tersebut berpotensi dimanfaatkan untuk pembangunan PLTMH. Beberapa faktor yangdiperlukan untuk pembangunan PLTMH ini adalah head dan debit air. Besar head didapatkan dari pengukuran menggunakan meteran, besar debit air didapatkan dengan menggunakan metode pelampung. Dengan rancangan head sebesar 2,9 m dan debit air sebesar 64,6901 ??⁄ . PLTPH ini menghasilkan output daya sebesar 1,1244 kW. Kapasitas PLTPH sebesar 1,1244 kW cukup untuk menyuplai kebutuhan listrik penerangan jalan sebanyak 59 buah lampu yang beroperasi dari pukul 17:00 hingga 05:00 dan 1 buah pemanas air yang beroperasi dari pukul 06:00 hingga 18:00. Kata kunci – pico hydro, floating method, electrical load (street lighting and water heater)
ANALISIS KELAYAKAN MINYAK TRANSFORMATOR DIDASARKAN PADA PARAMETER STANDAR MINYAK ISOLASI PADA TRANSFORMATOR DAYA 60 MVA DI GARDU INDUK KILIRAN JAO Fikri, Al Hadi; Dhofir, Moch.; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Testing and analyzing the condition of power transformer oil is very important to ensure the reliability and optimal performance of the transformer during operation. This research was conducted on the 60 MVA unit 2 power transformer at Kiliran Jao Substation with a focus on testing transformer oil characteristics and dissolved gas analysis (DGA). This transformer has a strategic role in electrical power distribution, where transformer oil is used as an insulating and cooling medium to support optimal device performance. This research consists of several stages. The first stage is a literature study, which is carried out by collecting theories through relevant articles, journals, and previous research to support the research discussion. The second stage is field observation, which is carried out at PT PLN (Persero) UPT Padang to learn how to take oil samples and the parameters tested. The transformer studied was a 60 MVA 150 kV power transformer unit 2 with serial number 3011170055. Furthermore, primary and secondary data were collected. Primary data includes transformer specifications and field test results, while secondary data includes historical data of previous test results. These data are then processed to analyze the physical and chemical condition of the transformer oil and detect dissolved gases that indicate potential internal faults. The data obtained was evaluated by comparing it against the IEEE 2008 standard to determine the operational feasibility of the transformer oil. The DGA test results show that the total combustible gas concentration (TDCG) is at Condition 1, which means the transformer oil is still safe for normal operation. However, there are indications of ethane gas (C₂H₆) in Condition 4, with concentrations exceeding the threshold indicating potential overheating in the temperature range of 300°C to 500°C. Testing the characteristics of transformer oil shows that parameters such as breakdown voltage, moisture content, acid content, viscosity, color, sediment, flash point, and interface tension are in good condition according to applicable standards. In conclusion, although the transformer oil is still suitable for use, intensive monitoring is needed of certain parameters, especially ethane gas, to anticipate the potential for overheating that can interfere with transformer reliability. Routine maintenance and advanced analysis are needed to maintain oil quality and prevent transformer damage, so that the operational sustainability of the power distribution system can be guaranteed. This research emphasizes the importance of periodic testing as a preventive measure to improve electrical system reliability.Keywoards: Analysis, Dissolved Gas Analysis, Characteristics, Nynas Nitro Lybra oil
Analisis Keandalan Sistem Distribusi 20kV pada Penyulang CMK PT. PLN (Persero) ULP Prima Priangan dengan Metode RIA (Reliability Index Assessment) Malamansyah, Triamelia Salsabila; Wibawa, Unggul; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 6 (2024)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Perkembangan zaman membawa masyarakat ke era modern di mana listrik berperan penting dalam mendukung produktivitas karena sifatnya yang fleksibel dan mudah ditransmisikan. Ketergantungan yang tinggi pada listrik meningkatkan tantangan menjaga keandalan sistem distribusi. Kota Bandung, dengan luas 167,31 km² dan kepadatan penduduk tinggi, memiliki kebutuhan distribusi listrik yang kompleks. Penelitian ini fokus pada Penyulang Cigereleng Mahameru Kuning (CMK) PT. PLN (Persero) ULP Prima Priangan, dengan panjang 3,901 kms dan 10 pelanggan industri besar, karena tingginya pemakaian daya dan gangguan yang berpotensi merugikan. Tujuan penelitian adalah menghitung indeks keandalan (SAIFI dan SAIDI) Penyulang CMK menggunakan metode RIA (Reliability Index Assessment) dan simulasi ETAP 19.0.1, menentukan ENS (Energy Not Supplied), serta menghitung kerugian ekonomi untuk dibandingkan dengan standar SPLN 59 tahun 1985. Hasil menunjukkan nilai SAIFI 2,342851 gangguan/tahun dan SAIDI 7,4028 jam/tahun (metode RIA), serta SAIFI 2,4233 gangguan/tahun dan SAIDI 7,6043 jam/tahun (simulasi ETAP). ENS tercatat sebesar 57.826,7661 kWh dengan kerugian ekonomi mencapai Rp80.890.611,12. Selisih indeks keandalan SAIFI dan SAIDI antara kedua metode adalah 6,71% dan 4,68%. Penelitian menyimpulkan bahwa indeks keandalan Penyulang CMK belum memenuhi standar SPLN 59 Tahun1985. Kata Kunci— Indeks keandalan, Energy Not Supplied (ENS), RIA (Reliability Index Assessment), ETAP 19.0.1.
EVALUASI KEANDALAN SISTEM DISTRIBUSI 20 KV DENGAN MENGGUNAKAN PENGGABUNGAN METODE SECTION TECHNIQUE DAN RELIABILITY INDEX ASSESSMENT (RIA) DI PT PLN (PERSERO) ULPPORONG PADA PENYULANG JIKEN Asyhari, Ahmad Rizky; Utomo, Teguh; Wibawa, Unggul
Jurnal Mahasiswa TEUB Vol. 13 No. 1 (2025)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

The need for the availability of reliable and efficient electrical energy is expected by the community as consumers. To find out how reliable and efficient a system is in supplying electrical energy to customers, it is necessary to analyze the reliability of the system. Distribution system reliability analysis can be done using several methods such as Section Technique and Reliability Index Assessment (RIA). The purpose of combining the Section Technique and RIA methods is to combine or sum up the parameters of the sustained failure rate and also the momentary failure rate. The combination of these two methods aims to complement the Section Technique method which only uses the sustained failure rate parameter. This study aims to determine the reliability index value of the Jiken Feeder of PT PLN (Persero) ULP Porong. In addition, this study will also calculate the value of economic losses received by PT PLN (Persero) ULP Porong based on the amount of Energy Not Supplied during a disturbance. To determine the reliability index value of Jiken Repository, several methods will be carried out, namely manual calculation using the Section Technique method and also a combined method (Section Technique - RIA), RIA and simulation using ETAP 19.0.1 software. The final result of the reliability index value will then be compared with the provisions of SPLN No. 59 of 1985, which shows that Jiken is categorized as unreliable because its reliability index value is above the provisions of SPLN No. 59 of 1985.Keywords : Section Technique, Combined Method, ETAP, Energy Not Supplied, Economic Loss
Dampak Variabilitas Downtime terhadap Kerugian Energi dan Kerugian Ekonomis pada Pembangkit Listrik Tenaga Minihidro (PLTM) Cikaengan-2, PTCikaengan Tirta Energi (CTE) Akbar, Muhammad Yoga Rochmanu; Wibawa, Unggul; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 13 No. 1 (2025)
Publisher : Jurnal Mahasiswa TEUB

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Abstract

Downtime merupakan waktu tidak berfungsinya mesin akibat kegagalan mekanik dan elektrik serta kerusakan pada penstock, waterway, dan DAS, yang berdampak pada efisiensi dan produksi energi di PLTM Cikaengan-2 dengan kapasitas terpasang 7,2 MW (2 unit, masing-masing 3,6 MW) dan faktor kapasitas 75%. Penelitian ini menggunakan metode Specific Water Consumption (SWC), Failure Mode Effect and Analysis (FMEA), Overall Equipment Effectiveness (OEE), Break Event Point (BEP), dan Return on Investment (ROI) untuk menganalisis efisiensi, keandalan, dan dampak downtime terhadap energi dan ekonomi. Hasil menunjukkan bahwa SWC target (1,0735 m³/MWh) tidak tercapai pada 2022 (0,9815 m³/MWh) dan 2023 (0,9632 m³/MWh), namun membaik pada 2024 (1,0648 m³/MWh). Kerugian energi akibat downtime tercatat sebesar 1.110,862 MWh (2022), 1.937,417 MWh (2023), dan 35,827 MWh hingga Juni 2024, dengan penyebab utama pada penstock (2022: 60,57%) dan DAS (2023: 70,89%). Penalti 15% akibat ketidaksanggupan memenuhi DOP > 73% menghasilkan kerugian finansial Rp5,80 miliar (2022), Rp6,98 miliar (2023), dan Rp3,10 miliar (2024). BEP maksimum dengan penalti tercapai dalam 10,97 tahun (ROI 8,14%), sementara BEP aktual dengan pertumbuhan produksi 14% membutuhkan 18–20 tahun. Pertumbuhan produksi 27% diperlukan untuk menyamai skenario maksimum dengan BEP 11 tahun dan ROI 22,25% tanpa penalti. Secara keseluruhan, downtime, variabilitas RPN, dan kebutuhan pertumbuhan produksi energi 27% secara signifikan memengaruhi efisiensi, keandalan, serta kelayakan finansial PLTM sesuai permen ESDM No.10 Tahun 2017.Kata Kunci—Downtime, Kerugian Energi, Kerugian Ekonomis, Pembangkit Listrik Minihidro (PLTM)
Co-Authors Adi Nugroho Pamungkas Aditya Prayoga Agus Supriono Akbar, Muhammad Yoga Rochmanu Akhmad Hasim Aldo Harry Saputra Allaam, Hisyam Ghozi Altajim, Fauzan Aiman Amanda Octavianus Rizky Andreas Parningotan S. Anggie Alvionita Anwi Kusuma Ardi Moh. Yusuf Arief Y., Primanda Arifin, Muhammad Rifat Aji Satria Arizky Erwinsyah Hariyanto Arkan Pradipta Arsy Rahmat Syahbani Assariy, Muhammad Faiz Asyhari, Ahmad Rizky At Tamimi, Riswandha Yusuf Aulia, Fitrah Baskara Heka Syahputra Bernadine, Muhammad Zaidan Bhawiko, Alekhin Muhammad Azhar Candra Mebby Oka Dedy Alfilianto Derry Putranugraha Dhofir, Mochammad Dikma Hartanjung Ditto Adi Permana Dwiky Satrio Wibowo Edi Setiawan Egavania Zerlinda Elisa Gumelar Dennis Erdyan Setyo W. Erlangga Dinda Permana Erlinda Indrayani Faishal, Luthfi Nur Fakhruddin Ar Rozi Farid Rohmadi Fariz Aulia Rifqi Farraz, Dayrry Yozza Febriananda Mulya Pratama Fery Praditama Fikri, Al Hadi Fikri, Zakkiyul Firdausi, Mega Firly Azka Nurhidayah Friska Bakti Novella Gagah Pratama Putra Galih Fajar Wicaksono Gathot Winarso, Gathot Gede Teguh Adi Wedangga Gitawan Dimas Prakoso Goegoes Dwi Nusantoro Haidar Ali Yafie Hamaris, Farhan Hari Santoso Harry Soekotjo Dachlan Hery Purnomo Himam, Fanisha Laila I Kadek Dwika Antara I Wayan Ari Mahendra Ifah Dea Hapsyari Ilham Ismail Mochsen ILYAS FATIH RAMADHAN Irfan Madani Pratama Jagad, Mohammad Wahyu Jayadiyuda, I Wayan Angga Jiwandono, Ferdian Ade Kalvin Lentino Kemal Pasha Pramudianto Khurun ‘Ain, n/a Kresna Sukma Dewangga Kurniawan, Ananda Donny Laksono, Mico Norman Lavelia Permata C. Lintang Gadis Ratu Rachellya Lukmanul Hakim Lunde Ardhenta Luthfan Bagus Saputra M. Iqbal Bayhaqi Fauzi M. Yudistya Perdana Ma'arif, Muhammad Thoriqul Maharani, Bella Fathia Mahfudz Shidiq Mahfudz Sidiq Malamansyah, Triamelia Salsabila Markus D. Letik Maulana, Achmad Fazar Arya Maulidina, Nabila Vida Moch Dhofir Moch. Dhofir Moch. Dhofir Moch. Dhofir Moch. Rizki Indra Dwijayanto Mochammad Fattah, Mochammad Mohammad Fahririjal Mubarok, M. Farid Ibnu Muhamad Alif Fatur Rahman Muhamad Andre Agesa Muhammad Arsyad Muhammad Azka Athallah Muhammad Edwinsyah Redho Muhammad Fadhli Dzil Ikram Muhammad Fahmy Madjid Muhammad Faris Hizrian Muhammad Halim Sa’id Muhammad Rif’at Nor Imami Muhammad Sekti Yolansyah Muhammad Wildan D. Muhammad Zakkiyul Fikri Syahara Arifianto Muyassar, Tegar n/a Rizaq n/a Soemarwanto n/a Soeprapto n/a Suyono Nandha Pamadya Putra Nizar Shodiq Novan Ardita Pratama Nur Laili Mufarikha Nurumar Setiyo Agung Pangeran Fatullah Panji Bintang Pamungkas Pradhana, Raka Radithya Praditama, Fery Pramudya, Lembat Aji Pratama, Muhammad Pashya Rifky Priambudi, Ardhito Pudji Purwanti Pujo Utomo Putra Adi Dharma Utama Putra, Deni Dwi Rahman Rachendra, Bima Denatta Rachman Shandy Pratama Radian Hepta Martha Hardaka Rafi Ilham Rahardjo, Muhammad Farid Ramdhony Tofano Murisom Revo Chanavi Mara Rexano B, Leonardo Reza Aliansyah Rif'an, Mochammad Rini Nur Hasanah Rini Nur Hasanah Riswandha Yusuf At Tamimi Rizal Firmansyah Rizki Adhi Priawan Rizki Ashadi Rizky Hamid Robbyansyah Rohmadi, Farid Rohman, Deny Fatkhur Rosyid, Muhammad Ruditta Devianti Sambodo Rila Priambudi Saputra, Didit Sugeng Sari Yuniarti Satrio Wicaksono Sean Yudha Yahya Shiddiq, Muhammad Fatihul Shidqi, Fahruddin Siagian, Alfandri Sinta Pratiwi Soeprapto Soeprapto Suwarno, Nastiti Viononny Suyono, Hadi Syarifasa, Arkananta Sydney, Agnes Amadea Rullynda Timbul Mulia Titis Aridanti Pratiwi Tri Nurwati Try Brojoseto Alkotsar Unggul Wibawa Unggul Wibawa Unggul Wibawa Unggul Wibawa Unggul Wibawa Utomo, Muhamad Adib Nur Utomo, Muhamad Afiq Nur Wahyu Nur Firdausy Warda Islamiyah Wardani, Alya Kusuma Wijono, n/a Wilda Faradina Wisam Abyadha Ibrahim Wisnu Adi Suryo Yanuar Alfa Tri Susanto Yashinta Carolina Dewi Yuda Wastu Yudistira Adi Nugroho Yuka, Helmi Dwi Yulistiono, Irwan Zaidane Alizzah Noufal Zuhdi, Fadhil Ariq Zulfikar Subagio ‘Aqila, M. Farrel Nikkola Putra