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All Journal Sinusoida: Jurnal Penelitian dan Pengkajian Elektro SAINSTECH: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Agus Sofwan
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Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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PENDETEKSIAN DINI TERHADAP ARUS BOCOR KABEL TANAH TEGANGAN MENENGAH PADA TRANSFORMATOR 150/20kV Agus Sofwan; S.Angga Kusuma
Sinusoida Vol 20 No 2 (2018): Jurnal Penelitian dan Pengkajian Elektro
Publisher : INSTITUT SAINS DAN TEKNOLOGI NASIONAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7478.734 KB)

Abstract

Didasari atas peristiwa pada Januari 2017 yang telah terjadi gangguan trip PMT 150 kV dan 20 kVtransformator 4 di GI Jatirangon. Pada gangguan tersebut sistem proteksi yang bekerja yaitu rele differentialfasa T dan REF 20 kV. Dampak dari gangguan mengakibatkan padamnya beban sebesar 1350 A, 35 MW dan 5Mvar. Penyebab gangguan yaitu terjadinya breakdown pada kabel tanah 20 kV fasa T core 1. Hal inimengakibatkan terjadinya hubung singkat ke tanah sehingga rele proteksi differential dan REF 20 kV bekerjadikarenakan rele tersebut merasakan adanya gangguan di daerah pengamannya.Hasil penelitian ini berupaperancangan suatu alat monitor pendeteksian dini. Alat ini digunakan untuk mengetahui besarnya arus bocorpada kabel tanah agar dapat meminimalisir terjadinya gangguan yang menyebabkan terjadinya pemadamanaliran daya listrik. Hasil monitor arus bocor pada kabel tanah fasa T core 1 didapatkan arus sebesar 0,6 Adengan suhu 35 oC. Dengan metode perhitungan kegagalan thermal untuk arus bocor didapatkan hasil sebesar0,56180 A dengan suhu 35 oC. Perbandingan antara perhitungan dengan pengukuran arus bocor pada kabeltanah fasa T core 1 diperoleh sebesar 6,36 %.Kata kunci : Transformator, Kabel Tanah 20 kV, Arus Bocor, Alat Monitor, Deteksi Dini
Rancang Bangun Modul Simulasi ELCB Fasa Satu Sebagai Pelindung Bagi Manusia Aris Suryadi; Agus Sofwan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 26 No 1 (2016): Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.893 KB) | DOI: 10.37277/stch.v26i1.67

Abstract

Abstrak---Tegangan yang terjadi selama mengalirnya arus gangguan tanah menimbulkan tegangan sentuh. Nilai tegangan diatas 50 v dan nilai arus bocor diatas 30 mA sangat berbahaya bagi manusia. Aplikasi Earth Leakage Circuit Breaker (ELCB) pada suatu sistem instalasi listrik fasa satu merupakan salah satu solusi yang dapat digunakan untuk melindungi manusia dari bahaya yang diakibatkan arus bocor. Prinsip kerja ELCB adalah dengan mendeteksi adanya arus bocor, dimana arus yang masuk ke sistem dibandingkan dengan arus yang keluar sistem, apabila ada perbedaan pada suatu nilai yang telah ditetapkan maka ELCB akan memutuskan aliran listrik ke sistem. Dari pengujian didapatkan rata-rata waktu pemutusan ELCB sebesar 1,048 ms dengan rata-rata arus 21 mA.
Sistem Sterilisasi Microorganisme Dengan Penyinaran Ultra Violet Berbasis Internet Of Things Agus Sofwan; Abdul Muis; Muhamad Juliarto
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 32 No 4 (2022): Sainstech : Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v32i4.1477

Abstract

Summery Kondisi pandemik yang terjadi saat ini menjadikan semua pihak berlomba untuk membuat solusi agar kembali seperti kondisi new normal. Perilaku yang baru berbasis pada adaptasi untuk membudayakan perilaku hidup bersih dan sehat, baik dalam ruang ataupun di alam bebas. Hal tersebutlah yang mendasari riset untuk solusi yang efektif didalam pelemahan ataupun sterilasasi ruangan dari mikro arganisme seperti bakteri, virus dengan cara penyinaran sinar Ultraviolet berbasis IoT. Untuk itu, Teknik Robotika digunakan untuk menggantikan tugas manusia dalam pekerjaan berbahaya dan berdampak buruk seperti untuk menditeksi micro organisme. Dalam penelitian ini penggunaan Sinar UV-C telah dilakukan walau disarankan agar tidak terlalu sering terkena kulit manusia karena dapat menimbulkan iritasi. Sinar UV-C diharapkan mampu mensterilisasi micro organisme secara efektif. Tujuan penelitian dalam perancangan sistem ini agar mampu melakukan penditeksian dan sekaligus pelemahan atau sterilisasi mikro-organisme pada ruangan secara aman. Metoda penelitian dilakukan secara eksperimental dengan pembuatan mobil robot yang dilengkapi dengan kamera dan dapat dikendalikan wireless berbasis IoT dan digunakan untuk melemahkan atau mensterilsasikan suatu ruang dari Miroorganisme. pada pengujian hasil rancangan robot untuk pelemehan mikro-organisme dengan penyinaran dengan sinar UV-C secara terkendali dengan bantuan adruino berbasis IoT. Pengujian ini dilakukan di laboratorium dengan menggunakan microscope 400 x pembesaran dengan tujuan untuk melihat efek yang diberikan akibat penyinaran sinar UV-C oleh mobile robotik. Sample digunakan adalah mikro organisme yang terdapat pada tanah kotor yang dibandingkan sebelum mengalami penyinaran dan setelah mengalami penyinaran dengan lampu TL UV-C selama 2 menit. Dari pengujian dan analisa maka dapat diambil suatu hasil bahwa UV-C Mobile robot dapat melakukan proses sterlisasi atau minimal pelemahan mikro-organisme dengan penyinaran sinar UV-C tersebut secara aman dan dengan waktu pelemahan yang efektif selama 1,5 - 2 menit. Untuk mengoptimalkan kinerja robot tersebut di masa mendatang dengan Waktu penyinaran otomatis serta ditopang dengan kecepatan motor dapat disesuaikan. Pengujian keberadaan Mikroorganisme sebelum dan sesudah penyinaran UV-C dilakukan dalam Laboratorium dengan bantuan Mikroskop sehingga dapat diketahui kebrhasilan Penelitian ini. Untuk peningkatan masih bisa dilakukan lagi untuk variasi waktu dan kecepatan serta kinertja dari mobile robot tersebut. Penelitian ini merupakan hasil kerjasama antara Akademi Komunitas Toyota Indonesia (AKTI) dengan ISTN dalam upaya untuk mengaplikasikan rancangan kontrol system yang mampu melakukan pelemahan dalam pensterilan micro organik pada ruangan dengan menggunakan sinar UV-C secara aman. Kata kunci: System Sterilisasi, UV-C, Robotika, IoT, Mikro organisme
Rancang Bangun Sistem Pengiriman Paket Penerobos Kemacetan Berbasis Teknologi Drone Handy M Irawan; Agus Sofwan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 1 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i1.1651

Abstract

Abstract Package delivery systems in Indonesia, especially in big cities, are currently less efficient in terms of delivery speed and are not environmentally friendly, besides that traffic congestion conditions are the most significant thing, therefore in this study a drone was made as a package delivery tool by air as breakthrough of traffic jam that can lift a package or document with a 1000 gram weight that will get to the destination faster than using package delivery using motorized vehicles by land. This research uses a developmental research method to design a drone that is in accordance with certain specifications, then the following stages are carried out: collecting data and information, determining frame design, determining hardware specifications, assembling all hardware, wiring electrical equipment, setting up mission planner software, flight tests without loads, flight tests with certain loads, collecting test data. As for the control communication system, it uses a telemetry that is connected in real time between the ground system equipment and the equipment in the air or air system. From the test results obtained drones that can work well. This is evidenced by looking at the experimental data for flight endurance testing, flight speed testing to flight testing with certain loads of flight testing data with a certain range, Keywords: Drone technology, Telemetry, traffic jam, Delevery system
Rain Attenuation Analysis On VSAT KU-BAND Frequency Meteorological Station of Mopah Merauke Anna Setyawati; Irwan Krisnadi; Abdul Multi; Agus Sofwan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 33 No 1 (2023): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v33i1.1654

Abstract

Abstract BMKG is one of the government agencies that provides Meteorological, Climatological, and Geophysic observation data, sent from each Work Unit or Site Sensor. One of the communication media used is VSAT. The Ku-band channel is one of the frequencies used by the BMKG for communication and data transmission. The Ku-band channel has a weakness for propagation, namely rain attenuation. It is necessary to calculate the effect of rain attenuation on the Ku-band channel, in order to obtain efficient power by each earth station. Model ITU-R P.618-5 is one of the rain attenuation prediction models and is generally used for frequencies up to 30 GHz. One of the BMKG station locations that uses the Ku-Band channel is Mopah Merauke Station. With rainfall data of 80.2 mm/hour in Mopah Merauke, ITU-R P.618-5 produces a rain attenuation of 17.86 dB. While the percentage of error with measurement data is 30.1%. Keywords: BMKG, VSAT, Ku-Band, ITU-R P.618-5, Merauke, propagation, attenuation, rain
Automation System For Water Leakage Detection With PLC Omron and Arduino Uno and HMI NB10-TW01 Direct Digital Bit 8 Binary I/O Desmayadi Desmayadi; Taswanda Taryo; Agus Sofwan; Sri Vidawati
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 34 No 1 (2024): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v34i1.1917

Abstract

Abstract There are many challenges in operating a multi-story building so the building can operate well. One potential problem that has a serious risk of damaging assets and even causing disruption to building operations is water leaks. To detect the impact of leaks from water installations, a detection system is needed that can provide specific information about the location of the leak to the building control center. This system uses a water detector as detection and a digital direct bit module as 8-bit input to the PLC Omron CPM2A, then the PLC will send an 8-bit digital direct output signal to the Arduino Uno module and a graphic visualization display using the Omron NB10-TW001 HMI. This research method is to design hardware and software. Testing the accuracy of input and output (I/O) signals, testing detectors, power supplies, and relay modules. From the research results, it was found that the input and output signals correspond to the 8 I/O bits, namely 00000000 - 11111111 which are processed by the PLC and Arduino, the performance of the Water Detector functions well as proven by the functioning of the CRM. Keyword: Programmable Logic Controller (PLC); Water Detector (WD); Channel Relay Module (CRM); Human Machine Interface (HMI); Arduino Uno; Digital Direct Bit.
Penerapan Metode Kalman Filter Slow-Fast Differential Untuk Meningkatkan Kerapatan Dan Nilai Curah Hujan Dengan Menggunakan Signal To Noise Ratio Pada Hub VSat Toto Andrianto; Agus Sofwan; Kun Wardhana; Masbah R.T Siregar
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 34 No 1 (2024): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v34i1.1918

Abstract

Abstract Rainfall measurement must be carried out, because rain is an essential phenomenon for human living. Generally, rainfall is measured using ground measurement (rain gauge), weather radar, and weather satellite. In this study, we exploit the potential of estimating rain fall by down SNR Ku-Band (14 GHz) wave on VSAT Hub using slow-fast differential kalman filter. This method using two kalman filters, ST (Slow Tracker) and FT (Fast Tracker). ST is slower, not more reactive than FT. Combination of those filters can detect and estimate rainfall. Rainfall estimation obtained from down SNR will be compared with rainfall measurement from ground measurement of rain gauge. Hub and rain gauge are close together and located in Kemayoran, Jakarta Pusat. This Area is still in coverage area of rain gauge between 250 m2 and 3000 m2. This research was successful in detecting ongoing rain. The rainfall estimation results obtained had a correlation coefficient of 0.9648 and a root mean square error of 4.418 Key words: Rain fall, Ku-band, signal to noise ratio, slow-fast differential kalman filter
Desain Dan Realisasi Bandpass Filter 5G Rejection Bandpass Filter Pada Frekuensi 3,7 - 4,2 Ghz Parlaungan Nasution; Iwan Krisnadi; Agus Sofwan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 34 No 1 (2024): Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37277/stch.v34i1.1919

Abstract

Abstract Fifth Generation, commonly referred to as 5G Technology, is an advanced technology from 4G. 5G technology is considered an effective technology to support the ongoing IoT era and also industry 4.0. The 5G wireless network standard has evolved into the most advanced technology today. Some who have adopted 5G technology include Smart Cities, Internet of Things (IoT). Internet of Things (IoT) and Machine to Machine (M2M) communications on a large scale will utilize the 5G wireless system, so that various requirements will be determined on the network regarding device cost, reliability, energy consumption, latency, and so on. The development of 5G networks is based on New Radio (NR) technology developed by 3GPP as a guide for interfaces to 5G technology. The 5G network system is built quantitatively with the performance parameters determined by ITU-R on 5G technology through IMT-2020. Development of 5G network systems according to future needs and services. The mid-band frequency that will be proposed for the use of the 5G technology frequency is at 3.5 GHz, but this frequency is also used by several satellite communication system operators in Indonesia. Based on the results of the 2019 World Radio Congress, Indonesia received a frequency range of 3500 – 3600 MHz for IMT-Systems (including 5G technology). In fact, based on research conducted by the GSMA, most countries in the Southeast Asian region use the 3400 – 3700 MHz frequency range for the use of satellite communication systems. The trial 5G Frequency Band is n78 (3GPP), namely 3400-3600 MHz, while the current Frequency Band is FSS Ext C-band and C-band, namely 3400-4200 The results of this bandpass filter can pass signals at a frequency of 3.7-4.2 GHz and has a bandwidth of 38 MHz, has a VSWR of 1.28, insertion loss of -3.76 dB and return loss of - 28.293 dB Keywords : 5G, C Band, Bandpass filter
Co-Authors ABDUL MUIS Abdul Multi Anna Setyawati Aris Suryadi Desmayadi Desmayadi Handy M Irawan Handy M. Irawan Irwan Krisnadi Iwan Krisnadi Kun Wardhana Masbah R.T Siregar Muhamad Juliarto Parlaungan Nasution S.Angga Kusuma Sri Vidawati Taswanda Taryo Toto Andrianto