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All Journal Elektron Jurnal Ilmiah TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of Engineering and Technological Sciences JURNAL NASIONAL TEKNIK ELEKTRO Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Indonesian Journal of Electrical Engineering and Computer Science Andalasian International Journal of Applied Science, Engineering, and Technology Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) Jurnal Andalas: Rekayasa dan Penerapan Teknologi Jurnal Rekayasa elektrika
Ariadi Hazmi
Andalas University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Other

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A leakage current estimation based on thermal image of polymer insulator Darwison Darwison; Syukri Arief; Hairul Abral; Ariadi Hazmi; M. H. Ahmad; Eka Putra Waldi; Rudy Fernandez
Indonesian Journal of Electrical Engineering and Computer Science Vol 16, No 3: December 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v16.i3.pp1096-1106

Abstract

Polymer insulators tend to fail because of the climatic and environmental conditions. The failure occurs when the surface of insulator is contaminated by sea salt or cement dust which lead to partial discharge (PD). Leakage currents will increase by PD that causes deterioration of insulation. To predict the insulation failures, an  adaptive neurofuzzy inference system (ANFIS) method using initial color detection processes are proposed to estimate the leakage currents based on the polymer insulator thermal images (infrared signature). In this study, the sodium chloride and kaolin are used as pollutants of the polymer insulator according to IEC 60507 standards. Then, the insulator is tested in the laboratory using AC high voltage applied at 18 kV where the temperature detection is controlled at 26° C and 70% RH (relative humidity). The percentage of colors (Red, Yellow, and Blue) from the thermal image is measured using the color detection method. Correspond to the color percentage, the ANFIS method predicts leakage currents from polymer insulators. Furthermore, this system interprets measured data from insulators that need to be categorized as Safe, Need Maintenance or Harmful. The final application of the system can be a non-contact tool to predict the polymer insulators used by technicians in the field.
A Systematic Literature Review of Automation Quality of Service in Computer Networks: Research Trends, Datasets, and Methods Budi Sunaryo; Muhammad Ilhamdi Rusydi; Ariadi Hazmi; Minoru Sasaki
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 7 No 2 (2023): April 2023
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v7i2.4810

Abstract

The article is a systematic literature review of the use of automation for quality of service (QoS) in computer networks. It summarizes the research trends, datasets, and methods used in the field and provides an overview of the current state of the art. The focus of the review is on the use of automation for QoS management and improvement in computer networks, including the use of machine learning, artificial intelligence, and other computational techniques. The review highlights the need for further research and development in this area and provides insights into future directions for the field. The review covered a wide range of studies, including research papers and conference proceedings, and involved a comprehensive database search of the Scopus database covering journals and proceedings such as the Institute of Electrical and Electronics Engineers (IEEE) Xplore, Association for Computing Machinery (ACM) Digital Library, Springer, and ScienceDirect databases between 2017 and September 2022. From these databases, 1856 metadata were found, which eventually became seventy-three metadata after going through the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol.
The correlation between lightning and various weather parameters in the Padang monsoon system Ariadi Hazmi; Muhammad Imran Hamid; Rudy Fernandez; Hanalde Andre; Rizki Wahyu Pratama; Primas Emeraldi
Indonesian Journal of Electrical Engineering and Computer Science Vol 31, No 1: July 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v31.i1.pp1-9

Abstract

The correlation between lightning and several weather parameters (rainfall, humidity, air temperature, and wind) in Padang from 2016 to 2020 was statistically analyzed. Lightning data and weather parameters were obtained from two electric field mills (EFMs) and the meteorology, climatology, and geophysics agency (BMKG), Indonesia. The study results show that the highest lightning occurred in November during the wet season. The correlation coefficient between lightning and rainfall during the wet and dry seasons was 0.52 and 0.26, respectively. Furthermore, the correlation coefficient of lightning with humidity, air temperature, and wind during the wet and dry seasons was 0.25, 0.06, 0.15, and -0.45, 0.25, -0.02, respectively. These results indicate a strong relationship between lightning and rainfall during the wet season; rainfall is the only primary variable in lightning frequency.
Penghilangan Mikroorganisme dalam Air Minum dengan Dielectric Barrier Discharge Ariadi Hazmi; Reni Desmiarti; Eka Putra Waldi; Arief Hadiwibowo; . Darwison
Jurnal Rekayasa Elektrika Vol 10, No 1 (2012)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.425 KB) | DOI: 10.17529/jre.v10i1.143

Abstract

Microorganisms such as Escherichia coli in water are a component that is difficult to remove in conventional water treatment systems. Several systems have been implemented to reduce levels of microorganisms is the use of disinfectants, the membrane filtration and activated carbon absorption. These systems have several weaknesses, so that not all microorganisms can be removed from drinking water. The plasma system is an applicable technology for removing organic compounds and microorganisms in drinking water. By creating plasma in water will produce several of active species such as OH-, H+, O3 and H2O2 that has a high oxidation potential, decompose organic compounds and kill microorganisms in the water significantly. This paper will describe the removal of microorganisms in drinking water using a plasma system by the method of dielectric barrier discharge (DBD ). The results howed that the pH of drinking water produced in the range 6.5 to 7.3. The higher voltage causes the higher the conductivity, temperature and ORP water. Removal efficiency for the content of microorganisms Coli Fecal and Coliform in the range 99.2 to 100% after water was injected voltage of 13-17 kV for 10 minutes.
Karakteristik Deretan Pulsa Preliminary Breakdown Yang Diikuti Sambaran Negatif di Padang Zulka Hendri; Ariadi Hazmi
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 1 No. 1 (2021): Juni 2021
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v1i1.45

Abstract

Penelitian ini ditujukan untuk mendapatkan karakteristik deretan pulsa preliminary breakdown yang diikuti sambaran negatif di Kota Padang. BIL model digunakan untuk mengidentifikasi perubahan medan listrik di awan sebelum terjadi sabaran petir negatif pertama. Penelitian ini dilakukan pada musim penghujan di Kota Padang Sumatera Barat dengan memanfaatkan antenna medan listrik. Deretan pulsa PB dipelajari dengan memanfaatkan 100 kali sambaran petir yang berjarak kurang dari 50 km dari stasiun penerima. Analisis yang dilakukan adalah individual pulse duration dan interpulse interval. Rata-rata aritmatik adalah individual pulse duration 10,02µs dan rata-rata geometriknya 6,77µs dengan rentang data dari 0,55 – 68,83µs. Rata-rata aritmatik interpulse interval 138,43µs rata-rata geometrik 94,94µs dengan retang data dari 22,064 – 627,73 µs. Deretan pulsa tipe pertama memiliki individual pulse duration pada setengah siklus pertama yang lebih pendek dibandingkan pada setengah siklus kedua, sedangkan deretan pulsa tipe kedua memiliki individual pulse duration yang hampir sama antara setengah siklus pertama dan setengah siklus kedua. Deretan pulsa tipe pertama miliki individual pulse duration dan interpulse interval yang lebih lama dibandingkan deretan pulsa tipe kedua.
Optimalisasi Jaringan Internet Sekolah dengan Fiber Optic, UTP Cat 6, dan VLAN Sunaryo, Budi; Hamdi, Khairil; Rusydi, Muhammad Ilhamdi; Hazmi, Ariadi; Yuhefizar, Yuhefizar
Prosiding SISFOTEK Vol 8 No 1 (2024): SISFOTEK VIII 2024
Publisher : Ikatan Ahli Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The use of the internet in schools has become essential to support teaching and learning activities, but issues such as uneven network distribution and suboptimal performance often arise. This study aims to address these problems by implementing Fiber Optic, UTP Cat 6, and Virtual Local Area Network (VLAN) technologies to enhance the stability and speed of the school’s internet network. Using the Network Development Life Cycle (NDLC) method, which includes analysis, design, simulation, implementation, and monitoring phases, the study results showed a 30% increase in network throughput and a reduction in average latency by 15%. Additionally, the VLAN configuration successfully separated data traffic, improving the security and efficiency of the network. The network was able to support more than 1000 users with stable performance. In conclusion, the implementation of these technologies significantly optimized the school’s internet network and can serve as a technical guide for other schools seeking to improve their network quality.
Comprehensive Review of Advanced Multi-Pulse Rectifier Technology and Its Application in Electric Vehicle Fast Charging Systems Harahap, Partaonan; Hamid, Muhammad Imran; Hazmi, Ariadi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 5 No. 1 (2025): March 2025
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v5i1.206

Abstract

Fast charging technology for electric vehicles (EVs) is one of the key components in supporting the transition to a sustainable transportation system. This article discusses advanced multi-pulse rectifier technology, such as 12-pulse, 24-pulse, and 48-pulse configurations, which are used to improve power efficiency and reduce harmonic distortion. The analysis includes the working principles, benefits compared to conventional rectifier technology, and the challenges of its implementation. The review results show that multi-pulse rectifiers significantly reduce Total Harmonic Distortion (THD), improve power quality, and facilitate integration with renewable energy sources. This article also suggests future research directions to address the limitations of current technology and to encourage further innovations in efficient and environmentally friendly EV charging.
Karakteristik Medan Listrik-Dekat Petir Positive Cloud to Ground Seftiani, Yudia Meka; Hazmi, Ariadi; Novizon, Novizon; Abadi, Akbar; Widia, Riza
Elektron : Jurnal Ilmiah Volume 15 Nomor 1 Tahun 2023
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/eji.15.1.334

Abstract

This study was conducted on 19 electric field data near positive lightning cloud to ground (+CG). The electric field change of +CG lightning consist of preliminary breakdown (PB) and return stroke (RS). The analysis conducted in this research are: PB/RS ratio, PB-RS separation, pre-return stroke duration, pulse train duration, and individual pulse duration. Furthermore, the relationship between +CG lightning and cloud image satellite was observed the average value of PB/RS ratio, PB-RS separation, prereturn stroke duration, pulse train duration and individual pulse duration were 13,89%, 91,53 ms, 102,23 ms, 1,20 ms,150,31 μs, respectively.
Co-Authors . Darwison Abral, Hairul Akbar Abadi, Akbar Andrew Kurniawan Vadreas Arief Hadiwibowo Aulia Aulia Budi Sunaryo Budi Sunaryo, Budi Corio, Dean Dasrinal Tessal Desmiarti, Reni Edwardo Edwardo Eka Putra Waldi Fusheng Li Hamdi, Khairil Hanalde Andre Harahap, Partaonan Li, Fusheng M. H. Ahmad Minoru Sasaki Mohd Hafizi Ahmad Muhammad Imran Hamid Muhammad Rusydi H. Mulyadi, Syaifa Novizon, Novizon Pratama, Rizki Wahyu Primas Emeraldi Reni Desmiarti Reni Desmiarti Riza Widia Rudy Fernandez Rusydi, Muhammad Ilhamdi Seftiani, Yudia Meka Syukri Arief Tessal, Dasrinal Timor, Agus Rahmad Yuhefizar Yuhefizar Yulastri . Zulka Hendri