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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

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.

Corona Discharge Detection Analysis on Aluminum and Iron Conductors by Point Field Electrode Method Nugroho, Satrio Dwi; Setiabudy, Rudy; Negara, Roy Bayu; Aliffianti Ulfiah, Shindy; Azhary Arsal, Fanji
International Journal of Engineering, Science and Information Technology Vol 5, No 1 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i1.706

Currently, Southeast Asia's highest primary energy usage is in Indonesia. Electrical infrastructure like transmission and distribution will be directly responsible for the high energy use. More distribution electrical networks will be in place due to the growing demand for electricity. So, the more significant the electrical disruptions that arise. Corona is one type of electrical disruption in the medium voltage network system. Corona is caused by a partial release of electrical charge, meaning the charge does not entirely pass through both conductors. The surrounding air experiences dielectric stress, producing noise, purple light, and a characteristic smell. Corona's appearance may seriously affect electrical equipment. Additionally, there are other ways to identify the appearance of corona, including using the senses of sight, smell, and hearing. The hearing approach involves utilizing a sound-capable sensor to detect corona. By taking pictures of the location of the corona, one can use sight to detect it. On the other hand, an ozone gas sensor is used in the scent approach. The author attempted to use the method of scent in this investigation. An ozone sensor will record corona disruptions that occur at the delivery site. Oxygen can be broken down into ozone because the air around the corona may ionize the surrounding air.

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

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.

Pengaruh Variasi Kecepatan Angin Terhadap Kinerja Generator Arsal, Fanji Azhary; Nugroho, Satrio Dwi Nugroho; Ulfiah, Shindy Aliffianti Ulfiah; Bayu, Roy Bayu Negara; Najmul, Muhammad Najmul Fadli; Kamisa, Yani Kamisa Putri
Teknosia Vol. 19 No. 1 (2025): Juni 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/teknosia.v19i1.42160

Wind power generation systems, wind speed has a significant impact on generator performance. Variations in wind speed can affect the reliability, efficiency, and output power of the system. The purpose of this study is to examine the relationship between changes in wind speed and generator performance, including energy conversion efficiency, output current, and output voltage. The study methodology includes actual measurements on a wind turbine-based generation system. The findings show that while higher wind speeds tend to increase generator output power, generator performance decreases drastically at low wind speeds, which can impact the reliability of electricity supply.

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

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

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.

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