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All Journal Jurnal Informatika dan Teknik Elektro Terapan Jurnal Nasional Teknik Elektro dan Teknologi Informasi JAIM: Jurnal Aliansi Ilmu Multidisiplin
Roy Bayu Negara
Universitas Gadjah Mada
Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Social Sciences Other

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Pemanfaatan SFCL tipe Bridge untuk Meningkatkan Stabilitas Transien Microgrid dan Economic Feasibility Roy Bayu Negara; Fransisco Danang Wijaya; Lesnanto Multa Putranto; Mohd. Brado Frasetyo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 12 No 2: Mei 2023
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jnteti.v12i2.4679

Abstract

Currently, renewable energy (RE) generators are widely used by society to reduce emissions. Therefore, a RE-sourced microgrid system coexisting with conventional energy is being developed. However, these electrical energy systems experience transient disturbances such as short circuits, load increase, and decrease in generator output. These disturbances can result in voltage drops and frequency instability. Therefore, efforts are needed to maintain system stability by using a superconducting fault current limiter (SFCL). The SCFL selection is based on its capability to limit the fault current and its speed in providing protection during transient disturbances. The utilized SFCL model is the bridge-type SFCL with two inductors as its main components. Under normal conditions, the current flows through two inductors, and when a fault occurs, the current will go through one inductor. This research was conducted in a scenario where a fault occurred. The voltage value without a bridge-type SFCL during the fault condition was 2.5 V. When a bridge-type SFCL was used, the voltage value was 207 V. Without a bridge-type SFCL, the measured current was 30 kA, whereas the measured current was 1.1 kA with one. The frequency range was 49.7 Hz - 50.2 Hz without bridge-type SFCL and 49.9 Hz - 50.1 Hz with bridge-type SFCL. This research also added an economic feasibility calculation to determine the microgrid system feasibility when using bridge-type SFCL. The calculation consisted of four parts, i.e., net present value (NPV), profitability index (PI), discounted payback period (DPP), and internal rate of return (IRR). Economic feasibility was obtained for an NPV value of US$6,865,405, a PI value of 2.4, a DPP value of four years, and an IRR value of 28.59%. When the obtained value is compared to the feasibility standard, it is determined that a microgrid with SFCL is feasible.
ANALISA PROTOTIPE PEMBUATAN PLTB SKALA KECIL PADA LABORATORIUM TEKNIK LISTRIK DI POLITEKNIK NEGERI PADANG Ulfiah, Shindy Aliffianti; Rahman, Aldi; Nugroho, Satrio Dwi; Negara, Roy Bayu; Arsal, Fanji Azhary
Jurnal Informatika dan Teknik Elektro Terapan Vol 13, No 2 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i2.6395

Abstract

A Currently, Indonesia is facing a demographic bonus, namely that the productive age is greater than the non-productive age. When entering a productive age, a person's standard of living will increase. Several studies have stated that the higher a person's standard of living, the greater their electricity needs will be. The need for electricity is currently a primary need; from waking up to resting, a person must use a lot of electricity, especially in big cities. If that happens in the future, there will definitely be more use of electricity needs. Indonesia's biggest challenge is to develop and increase a reliable and clean electricity supply. The solution is the development and application of New and Renewable Energy (EBT). The author tried to make a prototype of a Wind Power Plant (PLTB) on a small scale with tests with and without loads. The test results indicate that with a constant wind speed of 25 m/s, the results of the test without a load showed a stable voltage at 12.48 volts. When given a load of 3W, 6W, 9W, 12W, 15W, 18W, and 21W. The current value also changes with a lower light intensity.
ANALISIS HARIAN SOC BATERAI PLTS GEDUNG AC POLITEKNIK NEGERI PADANG SELAMA PERIODE 24-31 DESEMBER 2024 Negara, Roy Bayu
JAIM: Jurnal Aliansi Ilmu Multidisiplin Vol. 1 No. 1 (2025): Januari 2025
Publisher : CV Sentra Nusa Connection

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63545/jaim.v1.i1.135

Abstract

Penelitian ini bertujuan untuk menganalisis dinamika State of Charge (SoC) baterai pada sistem Pembangkit Listrik Tenaga Surya (PLTS) yang terpasang di Gedung AC, Jurusan Teknik Elektro Politeknik Negeri Padang. Data SoC dikumpulkan dengan interval per lima menit selama periode tanggal 24 Desember 2024 hingga 31 Desember 2024. Parameter yang dianalisis meliputi SoC awal, SoC akhir, SoC minimum, SoC maksimum, rata-rata SoC harian, dan perubahan SoC (ΔSoC). Rata-rata SoC awal tercatat sebesar 48,84%, SoC akhir sebesar 49,35%, nilai maksimum mencapai 100,00%, dan minimum terendah tercatat 18,20%. Perubahan SoC harian (ΔSoC) tertinggi terjadi pada 24 Desember (+53,20%), sedangkan penurunan terdalam tercatat pada 27 Desember (−55,93%). Fluktuasi ini dipengaruhi oleh intensitas radiasi matahari dan pola pemakaian energi harian. Hasil analisis menunjukkan bahwa sistem penyimpanan energi bekerja optimal dengan pengisian selalu penuh setiap hari, namun tetap ditemukan hari-hari dengan performa rendah yang mengindikasikan perlunya pengelolaan beban dan pemantauan lebih lanjut untuk menjaga keandalan sistem secara berkelanjutan.
ANALISA PROTOTIPE PEMBUATAN PLTB SKALA KECIL PADA LABORATORIUM TEKNIK LISTRIK DI POLITEKNIK NEGERI PADANG Ulfiah, Shindy Aliffianti; Rahman, Aldi; Nugroho, Satrio Dwi; Negara, Roy Bayu; Arsal, Fanji Azhary
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 2 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i2.6395

Abstract

A Currently, Indonesia is facing a demographic bonus, namely that the productive age is greater than the non-productive age. When entering a productive age, a person's standard of living will increase. Several studies have stated that the higher a person's standard of living, the greater their electricity needs will be. The need for electricity is currently a primary need; from waking up to resting, a person must use a lot of electricity, especially in big cities. If that happens in the future, there will definitely be more use of electricity needs. Indonesia's biggest challenge is to develop and increase a reliable and clean electricity supply. The solution is the development and application of New and Renewable Energy (EBT). The author tried to make a prototype of a Wind Power Plant (PLTB) on a small scale with tests with and without loads. The test results indicate that with a constant wind speed of 25 m/s, the results of the test without a load showed a stable voltage at 12.48 volts. When given a load of 3W, 6W, 9W, 12W, 15W, 18W, and 21W. The current value also changes with a lower light intensity.
Co-Authors Aliffianti Ulfiah, Shindy Arsal, Fanji Azhary Fransisco Danang Wijaya Lesnanto Multa Putranto Mohd. Brado Frasetyo Rahman, Aldi Satrio Dwi Nugroho