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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro Sinergi e-Jurnal Arus Elektro Indonesia ROTOR: JURNAL ILMIAH TEKNIK MESIN JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING SMARTICS Journal Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control JTERA (Jurnal Teknologi Rekayasa) CYCLOTRON Prosiding SAKTI (Seminar Ilmu Komputer dan Teknologi Informasi) Jurnal Mnemonic Vivabio : Jurnal Pengabdian Multidisiplin Journal of Applied Computer Science and Technology (JACOST) J-Innovation Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Rekayasa elektrika Jurnal INFOTEL Energy: Jurnal Ilmiah Ilmu-ilmu Teknik
Dodi Setiabudi
Jurusan Teknik Elektro, Fakultas Teknik, Universitas Jember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Transportation

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Design and Testing of a Milliampere Scale Leakage Current Sensor Based on a Current Transformer for Substation Lightning Protection Gamma Aditya Rahardi; Hendra Dharma Putra; Dodi Setiabudi; Widyono Hadi; Arizal Mujibtamala; Dani Hari Tunggal Prasetiyo
ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK Vol. 16 No. 1 (2026): ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK (January-May 2026 Edition)
Publisher : Universitas Panca Marga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51747/energy.v16i1.1611

Abstract

Leakage current in lightning arresters is an important indicator of insulation conditions and protection system performance in substations, so a measurement method capable of detecting currents in milliamperes accurately and stably is required. This study aims to design and test a milliamperes-scale leakage current sensor that can be used for lightning arrester monitoring. The developed sensor is based on a current transformer with an analog signal amplification and filtering circuit, and data acquisition using a microcontroller. Testing was carried out experimentally by varying the resistive load and the number of turns, then the measurement results were compared with an AVO meter as a reference measuring instrument. The test results showed that the sensor was able to measure leakage current with a relatively low error rate, where the lowest error occurred at a load of 33 Ω and increased at larger loads due to a decrease in current. The relationship between current and load variation showed a linear characteristic with a coefficient of determination (R²) value close to 1. In addition, magnetic field analysis showed that the relative permeability value of the ferrite core was in the range of 88.4 to 98, which reflects the stability of the core's magnetic properties under various test conditions. Based on these results, the developed sensor has the potential to be used as part of a lightning arrester leakage current monitoring system to support the maintenance and reliability of the substation protection system.
Design of 2x1 Single-band Microstrip Antenna Array with Proximity Coupling for Enhanced CCTV Performance Dodi Setiabudi; Citra Agustina; Muh. Arif Syaifullah; Catur Suko Sarwono; Dedy Wahyu Herdiyanto; Ali Rizal Chaidir; Muh Asnoer Laagu
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol. 11, No. 1, February 2026
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/kinetik.v11i1.2303

Abstract

The increasing demand for reliable wireless communication in modern surveillance systems, particularly Closed-Circuit Television (CCTV), requires the development of antennas with high efficiency, wide bandwidth, and stable signal performance. To meet these requirements, this study presents the design and analysis of a 2×1 microstrip antenna array with rectangular patches that use proximity coupling, optimized for operation in the 2.4 GHz ISM band. The antenna was designed and simulated using CST Studio Suite to evaluate its electromagnetic characteristics, while measurements using a Vector Network Analyzer (VNA) were performed to validate the performance of the manufactured prototype. Simulation results show that the antenna achieves a reflection loss of −24.62 dB, a voltage standing wave ratio (VSWR) of 1.12, and a frequency bandwidth of 159 MHz, indicating good impedance matching and wide operational capability. Meanwhile, measurement results showed a reflection loss of −12.59 dB, a VSWR of 1.15, and a frequency bandwidth of 86 MHz. Both simulation and measurement results showed directional radiation patterns, ensuring efficient energy radiation and better signal focus for monitoring coverage. The designed antenna also shows a measured gain of 9.25 dBi, exceeding the simulated gain of 6.99 dBi, confirming improved performance. The difference between simulation and measurement is mainly due to variations in substrate thickness, material tolerance, and environmental factors during testing. Overall, the proximal coupling approach has proven effective in improving coupling efficiency without adding design complexity. This antenna is well-suited for reliable and efficient data transmission in CCTV applications. Furthermore, the findings contribute significantly to advancements in antenna technology, particularly in the domains of wireless communication, IoT, and smart city-based surveillance systems.
Co-Authors Aabid Nabhaan Alfian, Freska Meliniar Alfredo Bayu Satriya Ali Rizal Chaidir Ali Rizal Chaidir Andina Maharani Andrita Ceriana Eska Arif Fahmi Arizal Mujibtamala Atmaja, Daris Irfan Bambang Sujanarko BAMBANG SUPENO Bambang Supeno Bambang Supeno, Bambang Catur Suko Sarwono Ceriana Eska, Andrita Citra Agustina Dailami Firdaus Dani Hari Tunggal Prasetiyo Daris Irfan Atmaja Daru Quthni Firdaus Dedy Wahyu Herdiyanto Deschie Tri Aksara Dirgahayu Kusuma Wibowo Farah Oktauliah Farah Oktauliah, Farah Felayati, Akbar GAMMA ADITYA RAHARDI Gilang Ramadhan Gramandha Wega Intyanto Guido Dias Kalandro Gumilang, Laksana Fajar Hafifi, M Erick Lucky Hasanur Mohammad Firdausi Hendra Dharma Putra Ike Fibriani Immawan Immawan Wicaksono Ivanda, Dio Ferrel Lutfi Bayu Haniffian Wicaksono M. Fahrur Rozy Hentihu M. Yasin Anwar Moh. Erdianto Triputradi Muh Asnoer Laagu Muh. Arif Syaifullah Muhammad Gebby Gumelar Muhammad Geby Gumelar Muhammad Riza Darmawan Satryo Budi Utomo Siswahyudianto Sumardi Teguh, Adial Muhsin vicky Ainur Ridho vicky Ainur Ridho, vicky Ainur Wahyu Muldayani Widjonarko . Widya Cahyadi Widyono Hadi