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All Journal Majalah Ilmiah Teknologi Elektro ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JURNAL NASIONAL TEKNIK ELEKTRO Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Emitor: Jurnal Teknik Elektro
Nugraha, Candra Febri
Unknown Affiliation
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Perbaikan Jaringan Tegangan Rendah Dengan Sisip Trafo Distribusi Fase Tunggal Untuk Mengurangi Overload dan Jatuh Tegangan PT PLN (Persero) ULP Yogyakarta Kota Ramadhan, Muhammad Dwi Cahyo; Ginting, Nina Loenca Br; Muflih, Haidar Nabil; Ningrum, Nur Risya Difa Kusuma; Nugraha, Candra Febri
Jurnal Teknologi Elektro Vol 22 No 2 (2023): (Juli - Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2023.v22i02.P17

Abstract

Distribution transformers play a crucial role in the distribution network by transforming electrical energy from the source to the customers. This is closely related to issues in the process of distributing electrical energy. According to PLN standards, a transformer is considered overloaded when the load exceeds 80% of its installed capacity. Overloading can lead to increased transformer temperature, potentially damaging the insulation and causing power supply disruptions to consumers. A B&D 50kVA distribution transformer has been installed on pole 17A/U3-30 in the Belibis Street, Wonocatur, Banguntapan, Yogyakarta area. The transformer is currently experiencing a load of 112.5%. In this study, the insertion of an additional transformer is proposed as a solution to reduce the overload percentage and voltage drop. The transformer insertion has already been implemented in the field, and this study aims to analyze its impact by determining the optimal location through simulations. Based on the simulation results using ETAP 12.6.0, the transformer insertion on pole 1/S3-19 in the field can improve the voltage value at the customer end to 0.94 p.u., with a load of 86.6% on the inserted transformer and 35.6% on the existing transformer. However, an optimal location determination is found on pole 18/S3-17 based on the best voltage value at the customer end, which is 0.94 p.u., with the existing transformer operating at 58.1% load and the inserted transformer operating at 65.3% load. The inserted transformer can effectively reduce overload and voltage drop for customers, and by determining the optimal location, it can enhance the efficiency of analyzing load development and voltage values. Keywords— transformer; overload; drop voltage; ETAP; optimal
Analisis Perbandingan Uprating dan Sisip Transformator Tiga Fase untuk Mengantisipasi Terjadinya Overload pada Transformator Distribusi Penyulang GJN-12 Nomor Tiang U3-89/1 PT PLN (Persero) ULP Yogyakarta Kota Ningrum, Nur Risya Difa Kusuma; Ginting, Nina Loenca Br; Muflih, Haidar Nabil; Ramadhan, Muhammad Dwi Cahyo; Nugraha, Candra Febri
Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Vol 4, No 2 (2023)
Publisher : Departemen Teknik Elektro dan Informatika Sekolah Vokasi UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/juliet.v4i2.87124

Abstract

Seiring bertambahnya jumlah penduduk, kebutuhan listrik juga mengalami peningkatan tiap tahun. Pesatnya pertumbuhan penduduk dan ekonomi di area PLN (Persero) ULP Yogyakarta Kota berpengaruh pada bertambahnya permohonan tambah daya listrik oleh pelanggan yang mengakibatkan terjadinya overload (beban lebih) pada transformator distribusi. Berdasarkan ketetapan SPLN No. 17 Tahun 1979 menyatakan bahwa terdapat tiga macam kondisi transformator yaitu normal, waspada dan darurat. Menurut persentase pembebanan transformator, kondisi waspada dan darurat terjadi saat pembebanan lebih dari 80%. Oleh karena itu, dilakukan simulasi dilakukan untuk mengetahui kondisi transformator ketika dilakukan penambahan daya. Pada metode penelitan ini membandingkan pengaruh uprating dan sisip transformator untuk mengantisipasi terjadinya overload. Metode perbandingan tersebut berdasarkan tiga aspek yaitu persentase pembebanan, persentase drop voltage dan biaya pengerjaan. Berdasarkan hasil simulasi pada penelitian ini, kedua metode tersebut menunjukkan hasil efektivitas yang sama, dengan persentase pembebanan mengalami penurunan 75,9% dan penurunan persentase drop voltage 1,81%. Sedangkan biaya pengerjaan untuk uprating sebesar Rp44.417.670, sedangkan untuk sisip transformator sebesar Rp48.843.740. Biaya pengerjaan uprating transformator lebih murah karena tidak memerlukan biaya pemasangan tiang serta konstruksi CC7. Maka dari itu, metode upratinglebih efisien dari metode sisip transformator dalam hal biaya pengerjaan. 
Analisis Harmonik dan Perbaikan Nilai THD Arus dengan Perancangan Filter Pasif Single-Tuned AKBAR, ANDIKA MUHAMMAD; NUGRAHA, CANDRA FEBRI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 4: Published October 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i4.892

Abstract

ABSTRAKSistem elektrifikasi kereta rel listrik (KRL) Jogja-Solo mempunyai tegangan nominal 1.500 Volt DC yang disuplai dari PLN 20 kV AC melalui gardu traksi untuk mengonversinya dengan komponen silicon rectifier yang bersifat sebagai beban non-linier. Beban tersebut menyebabkan harmonik, karena memiliki karakteristik menyuntikkan arus balik menuju sumber sehingga dapat menimbulkan distorsi pada gelombang arus. Penelitian ini bertujuan menganalisis harmonik dan memperbaiki nilai THD arus dengan merancang filter pasif untuk mereduksi gangguan tersebut pada panel outgoing RTR cubicle switchgear 20 kV di Gardu Traksi Purwosari. Pengukuran dengan power analyzer DW-6095 menunjukkan indeks harmonik yang melampaui standar IEEE Std 519TM-2014, sebesar 27,4%. Filter harmonik dirancang melalui pemodelan dan simulasi menggunakan software ETAP. Hasil yang paling optimal yaitu pemasangan tiga filter harmonik (orde 11, 13, dan 23) di dekat rectifier. Saat sistem disimulasikan dengan beban, nilai THD-I menurun secara signifikan hingga 0,97%.Kata kunci: beban non-linear, ETAP, filter pasif, gardu traksi, harmonik ABSTRACTThe electrification system of the Jogja-Solo electric rail train (KRL) has a nominal voltage of 1,500 Volt DC supplied from PLN 20 kV AC through a traction substation to convert it with silicon rectifier component which is a non-linear load. The load causes harmonics, because they have the characteristic of injecting reverse current towards the source so that they can cause distortion in current waves. This study aims to analyze harmonics and improve the THD value of current by designing a passive filter to reduce the distortion on the outgoing RTR cubicle switchgear panel of 20 kV at the Purwosari Traction Substation. Measurements with the DW-6095 power analyzer showed a harmonic index that exceeded the IEEE Std 519TM-2014 standard, by 27.4%. The harmonic filters were designed through modeling and simulation using ETAP software. The most optimal result is installation of three harmonic filters (order 11, 13, and 23) near the rectifier. When the system is simulated with a load, THD-I value decreases significantly to 0.97%.Keywords: non-linear loads, ETAP, passive filter, traction substation, harmonic
Analysis of Mean Time Between Failures and Reliability of a 150 kV Circuit Breaker at Bantul Substation Using the Maximum Likelihood Estimation Method Rachmanto, Arsya Hilmana; Nugraha, Candra Febri
Emitor: Jurnal Teknik Elektro Vol 24, No 3: November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v24i3.5908

Abstract

As technology advances in the modern era, the need and consumption of electrical energy in society has increased rapidly. With the need for electrical energy continuing to increase, various disturbances in the electrical system, including in substations, cannot be predicted when they will occur. The Power Breaker (PMT) is a vital equipment in the Bantul 150 kV substation power system that functions to break the electrical circuit under load to prevent interference and damage to equipment and ensure the smooth distribution of electrical energy to consumers. Based on the role of PMT, the estimation of PMT failure time has not been studied in depth. This study aims to analyze the Mean Time Between Failure and Reliability of the Bantul 150 kV Substation PMT. The method used in assessing PMT life is Maximum Likelihood Estimation. The data used are the results of observations of ten different PMTs in Bantul Substation. The results of the analysis show that the average value of the time period between failures (MTBF) varies between different PMTs. The highest MTBF value is PMT Wirobrajan 2 with a damage period of about 14.55 months, while the lowest MTBF is PMT Semanu 2 with a damage period of 5.48 months. The results of the analysis of failure probability, cumulative failure probability, reliability probability, and damage rate of 150 kV PMTs show significant variations between different PMTs. Reliability value produces the lowest value on PMT Transformer 3. While the highest Reliability value produces the highest value, namely on PMT Kopel. With the known MTBF and Reliability of 150 kV PMT at Bantul Substation, it can be used as a basis for maintenance and maintenance of PMT in its operation at Bantul Substation.
A Techno-Economic Analysis for Raja Ampat Off-Grid System Subekti, Lukman; Nugraha, Candra Febri; Arrofiq, Muhammad; Muthahhari, Ahmad Adhiim; Prasetyo , Budi Eko; A’yun, Qurrota
JURNAL NASIONAL TEKNIK ELEKTRO Vol 13, No 1: March 2024
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v13n1.1180.2024

Abstract

Indonesia, an expansive archipelagic nation with over 17,000 islands, encounters significant challenges in ensuring a sustainable and dependable electricity supply, particularly in its West Papua region. The reliance on diesel fuel for electricity generation in this area poses substantial environmental risks and incurs high costs. A comprehensive research study addressing the environmental and economic challenges associated with diesel dependence in West Papua proposed a shift towards sustainable and cost-effective solutions by advocating for adopting off-grid hybrid power systems. This study targeted Yensawai Village in the Raja Ampat Islands, employing a detailed techno-economic analysis through HOMER Pro to identify the most cost-effective system configurations. The findings indicated that the optimal setup consists of a 160 kW diesel generator, complemented by a 70.1 kW solar photovoltaic (PV) system, a 30 kW inverter, and an 80 kWh battery storage unit. This configuration not only proved to be economically viable by reducing the levelized cost of electricity (CoE) by 15.7%—achieving a CoE of $0.236/kWh compared to the base scenario's $0.280/kWh—but also highlighted the potential for similar benefits across regional systems. By focusing on the economic advantages of hybrid energy configurations, this research contributes significantly to the broader discourse on sustainability and the urgent need to reduce diesel dependence, offering a practical approach to cutting electricity generation costs in remote island communities and advancing sustainability initiatives.
Co-Authors AKBAR, ANDIKA MUHAMMAD A’yun, Qurrota Ginting, Nina Loenca Br Lukman Subekti Muflih, Haidar Nabil Muhammad Arrofiq Muthahhari, Ahmad Adhiim Ningrum, Nur Risya Difa Kusuma Prasetyo , Budi Eko Rachmanto, Arsya Hilmana Ramadhan, Muhammad Dwi Cahyo