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PEMELIHARAAN SHUTDOWN MEASUREMENT PADA PERALATAN CURRENT TRANSFORMATOR DAN LIGHTNING ARRESTER PADA BAY LINE KUTA 2 GARDU INDUK 150kV SENGKOL. aiza_22; Ariessaputra, Suthami
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 2 (2024): Edisi July 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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This research aims to find out how and the results of routine 2-year maintenance on current transformers and Lighting Arrester in a state of blackout (shutdown measurement). Tests carried out in the form of testing insulation resistance and grounding resistance. The measuring instrument used in testing insulation resistance, namely Megger MIT 1025 while for testing grounding resistance used Digital Earth Kyoritsu Model 4105A. The results obtained in the insulation resistance test are good with a predetermined standard of 1Mohm per 1kV on the current transformer while on the Lightning Arrester with a predetermined standard of > 1Gohm obtained good results as well so it is feasible to operate. The results of the grounding resistance test on the current transformer are in good condition with a standard of <1Ohm, the test results obtained are also good on lightning arresters with the same standard <1Ohm so that this equipment is suitable for operation

Desain Sistem Pembangkit Listrik Hybrid Off-Grid Menggunakan Software HOMER Untuk Elektrifikasi Di Desa Suryawangi Kecamatan Labuhan Haji Kabupaten Lombok Timur Hidayatullah, Harsandi; Adhevina, Ihda; Muljono, Agung Budi
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 2 (2024): Edisi July 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Energy and environmental problems are major challenge in the world. These problems related to the need to replace conventional fuels with new renewable energy sources. New renewable energy is scattered throughout Indonesia, including geothermal, wind, solar, hydro, and biomass. However, the utilization in the national energy is still low. This study offers a solution to this problem by planning a hybrid powerplant in Suryawangi Village, East Lombok, to serve the electrical energy needs of the village. In this study, solar and microhydro powerplant will be simulated to provide electrical energy using HOMER software. The data needed in this study was taken from BPS data and the global solar atlas. Suryawangi village has hydro energy potential with a 477,97 liters per seconds of Kokok Tebaban water flow and also 4,725 kWh/m2/day solar radiation at coordinates -8Â°39'49" S, 116Â°34'43" E which has potential to be source for solar powerplant. Simulation results shows the hybrid powerplant system with 20,7 kW capacity of microhydro powerplant and 229 kW capacity of solar plant cost a total of Rp. 689.721.500,- with cost of energy Rp. 377,52 and operating cost Rp. 9.197.444,-. The hybrid powerplant system generates total energy of 434.259 kWh/year, where the solar powerplant generates 321.295 kWh/year and the microhydro powerplant generates 112,964 kWh/year of energy.

Desain Sistem Pembangkit Listrik Optimal On-Grid Tenaga Surya Dan Bayu Menggunakan Software Homer Di Kecamatan Asakota, Kota Bima. Fadhillah Umar Rahman; Citra Putri Maharani; Nur Habiiburrahman; Much. Dede Pratama; Agung Budi Muljono
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 2 (2024): Edisi July 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Indonesia is currently facing a complex energy crisis characterized by high dependence on fossil fuels such as coal, petroleum and natural gas. This crisis has an impact on energy security, public health and environmental sustainability. In Bima City, NTB, the energy crisis is clearly visible with frequent power outages and high prices of fossil fuels. However, Bima City has quite large potential to develop renewable energy, especially solar and wind energy. This research aims to determine the effect of solar radiation and wind speed on electricity production at solar and wind power plants in the Asakota District and to design an optimal on-grid power generation system using HOMER software. The simulation results show that the correct system development planning with a total annual load of 2424.25 kWh/year, namely with the NPC value, the system costs IDR 9,993,555,000.00 which is capable of producing electrical energy that can be sold at a price of IDR 431.37. /kWh with operational costs of IDR 390,296,400.00. The energy produced by the PV Panel is 643,009 kWh/yr and the Agin Turbine is 632,357 kWh/yr and the excess energy for tertiary needs is 142,014 kWh/year. The study also provides insight into the benefits of solar and wind energy and the use of HOMER software for planning power generation systems.

Implementasi Sinkronisasi File Server Dengan Secure File Transfer Protocol Lalu A. Syamsul Irfan Akbar, ST., M.Eng.; Cipta Ramadhani, ST., M.Eng.; Feldy Novanda Mulkan
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 2 (2024): Edisi July 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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The web serves as a platform for disseminating and retrieving information. However, during periods of server overload, server performance and client access times can significantly slow down. One viable solution to address this issue is server clustering, where multiple servers are combined into a unified system. Among the methods employed in such scenarios is load balancing, which aims to evenly distribute client requests across multiple servers to optimize performance. Nevertheless, ensuring file synchronization across these clustered servers remains crucial to maintain file availability. Python's watchdog library provides a solution for monitoring file changes and facilitating file synchronization using Secure File Transfer Protocol (SFTP). In synchronization tests, file transfer speeds ranged from 39.54 to 42 Mb/s, with transfer durations varying between 2.02 seconds and 19.05 seconds for file sizes ranging from 10MB to 100MB. Concurrent synchronization experiments revealed that 9 files failed due to data collisions caused by simultaneous file transfers to both servers. Furthermore, the experiments successfully differentiated and compared the MD5 values of each file, demonstrating the capability to detect changes when files were created, deleted, or modified during alternate synchronization processes.

Aplikasi Perhitungan Faktor Koreksi Kalibrasi Berbasis Android di Dinas Tenaga Kerja dan Transmigrasi Azegap, Syahrul; Akbar, Lalu Ahmad Syamsul Irfan
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 3 (2024): Edisi November 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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This study focuses on developing an Android-based application to simplify the calculation of calibration correction factors for measuring instruments, specifically aiding the Department of Manpower and Transmigration in ensuring the accuracy of equipment used for workplace safety. The application addresses the limitations of manual calculations and suboptimal software by providing a user-friendly interface for inputting calibration data, automatically computing correction factors, and storing calculation histories. The development process includes planning, designing, algorithm implementation in Kotlin, application development in Android Studio, and comprehensive testing for functionality and usability. The results demonstrate that the application enhances efficiency, accuracy, and consistency in the calibration process, which is vital for maintaining high safety standards. User feedback indicates high satisfaction with the application's ease of use and reliability. Moving forward, the application is expected to make significant contributions to calibration, with ongoing updates to meet evolving user needs, thereby reinforcing the collaboration between educational institutions and industry while promoting quality standards in various sectors.

Sinkronisasi Data Server-Client dengan Network File System Berbasis BashShell melalui Jaringan Virtual Private Network giriwahyuwiriasto; Harsani, Mardiana Rizka; Akbar, L.A.Syamsul Irfan
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 3 (2024): Edisi November 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Virtual Private Network merupakan jaringan privat yang memanfaatkan jaringan publik untuk berbagi dan mengakses informasi dari lokasi mana pun, sementara layanan Network File System digunakan untuk mempermudah akses data. Terdapat Observatorium Geomagnetik Lombok (OGL), sebagai pusat pencatatan data-log oleh server pengukuran medan magnet bumi, berjarak lokasi dengan kota Mataram 42 Km. Untuk memenuhi kebutuhan akses data real-time, diperlukan sinkronisasi dan duplikasi data pada server OGL ke komputer klien di kampus Unram. Penelitian ini membuat program sinkronisasi dan duplikasi data berbasis BashShell untuk ujicoba pada prototipe jaringan dengan VPN, memungkinkan data tersinkronisasi secara efisien dan dapat diakses. Berdasarkan data yang di dapat dari hasil pengujian, hasil uji new file memerlukan waktu yang lebih sedikit (31 detik) bila dibandingkan dengan move file (32 detik) dan differ file (33 detik); Semakin banyak new file yang di copy maka semakin banyak pula waktu yang di butuhkan. Hal ini terlihat pada saat pertama kali program sinkronisasi di jalankan membutuhkan waktu 54 detik untuk >50 file sedangkan pada saat ujicoba ke-3 membutuhkan waktu 31 detik untuk 4 file.

Perancangan Sistem Keamanan Sepeda Listrik Menggunakan Sensor Fingerprint Wiryajati , I Ketut; al rafif, muhammad roid
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 3 (2024): Edisi November 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Increasing security on vehicles, including electric bicycles, is an important concern to prevent criminal acts such as theft. The security system developed in this study uses a fingerprint sensor to ensure that only registered users can operate electric bicycles. By scanning and verifying fingerprints, the system ensures that only fingerprints registered in the database can start the vehicle. E-bike technology, which combines the concept of a conventional bicycle with the addition of an electric motor and battery as a driver, was chosen as the object of research. The implementation of this system involves an Arduino Uno device, fingerprint sensor, buzzer, and relay to regulate vehicle access. Arduino Uno functions as a control center that regulates the process of verifying identity and activating electric bicycles, while the buzzer acts as a sound notification tool in the system. This system is expected to be able to improve vehicle security and provide a practical solution in vehicle access based on biometric authentication.

Pendekatan Regresi Linear untuk Mengkaji Pengaruh Induktansi pada Efisiensi dan Daya Keluaran Zeta Converter Wiryajati, I Ketut; Baihaki, Ahmad Riki; Budiman, Djul Fikry
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 3 (2024): Edisi November 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Increasing security on vehicles, including electric bicycles, is an important concern to prevent criminal acts such as theft. The security system developed in this study uses a fingerprint sensor to ensure that only registered users can operate electric bicycles. By scanning and verifying fingerprints, the system ensures that only fingerprints registered in the database can start the vehicle. E-bike technology, which combines the concept of a conventional bicycle with the addition of an electric motor and battery as a driver, was chosen as the object of research. The implementation of this system involves an Arduino Uno device, fingerprint sensor, buzzer, and relay to regulate vehicle access. Arduino Uno functions as a control center that regulates the process of verifying identity and activating electric bicycles, while the buzzer acts as a sound notification tool in the system. This system is expected to be able to improve vehicle security and provide a practical solution in vehicle access based on biometric authentication.

Pengaruh Metode Pengukuran Terhadap Akurasi Penentuan Daya Listrik: Analisis Perbandingan Metode Voltmeter-Amperemeter, Tiga Voltmeter, Tiga Amperemeter, dan Wattmeter BINTANG AULIA, GUARNEAN
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 3 No. 1 (2025): Edisi April 2025
Publisher : Depertment of Electrical Engineering University of Mataram

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engukuran daya listrik dilakukan dengan Empat metode pengukuran daya listrik voltmeter-amperemeter, tiga voltmeter, tiga amperemeter, dan wattmeter dievaluasi untuk menentukan tingkat akurasi pada berbagai beban berdasarkan Hukum Ohm dan teori daya listrik yang mencakup daya aktif, reaktif, dan semu. Pengukuran menunjukkan bahwa hasil daya meningkat seiring bertambahnya beban, tetapi akurasi bervariasi di antara metode. Wattmeter memberikan hasil paling akurat dengan kesalahan terkecil, sedangkan tiga voltmeter menghasilkan kesalahan terbesar karena keterbatasan alat ukur. Hubungan antara arus dan daya sesuai dengan Hukum Ohm, sedangkan tegangan sumber tetap stabil meskipun arus meningkat akibat beban yang bertambah. Pilihan metode pengukuran berpengaruh signifikan terhadap akurasi hasil, dengan wattmeter direkomendasikan untuk aplikasi yang membutuhkan presisi tinggi, sementara metode lainnya lebih cocok untuk kebutuhan tertentu. Temuan ini diharapkan menjadi referensi dalam memilih metode pengukuran daya listrik untuk keperluan praktis maupun penelitian lebih lanjut.

Pendekatan Tekno-Ekonomi untuk Pengembangan Sistem Energi Hibrida Hidro-Biomassa untuk Pasokan Listrik Berkelanjutan di Daerah Pedesaan Muljono, Agung Budi; Poetra, Satrya Bhayangkara; Parhan, Lukman
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 3 No. 1 (2025): Edisi April 2025
Publisher : Depertment of Electrical Engineering University of Mataram

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Indonesia is one of the countries crossed by the equator, so it has quite large renewable energy potential, including in the Lombok area. Therefore, the use of renewable energy-based power plants can be applied throughout Indonesia. Lombok Island with its geographical conditions in the form of an archipelago with plains from the coast to the mountains has great potential for energy ranging from wind, water, biomass and solar power. The purpose of this system planning is to determine the importance of alternative energy in providing electricity for rural communities to obtain a sustainable supply of electricity based on hydro and biomass energy through a techno-economic approach. This research was applied to rural communities in Pemenang, Lombok, as an energy community. The software used for this system planning is Homer 2.19. The optimization results obtained using Homer are using hydroelectric power plants, biogas energy, converters, and batteries so that the total funds needed to purchase system components when the project starts are US$ 116,200, the present value of the installation and operation costs of the system until the project is complete (NPC) is US$ 514,764, the average price per kWh of electricity generated is US$ 0.082.

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Budi Darmawan

Contact Email
jeitech@unram.ac.id

Phone
+6281805290370

Journal Mail Official
jeitech@unram.ac.id

Editorial Address
Jl. Majapahit No.62 Mataram NTB

Location
Kota mataram,

Nusa tenggara barat

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Budi Darmawan

Contact Email jeitech@unram.ac.id

Phone +6281805290370

Journal Mail Official jeitech@unram.ac.id

Editorial Address Jl. Majapahit No.62 Mataram NTB

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

Abstract

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Contact Name
Budi Darmawan

Contact Email
jeitech@unram.ac.id

Phone
+6281805290370

Journal Mail Official
jeitech@unram.ac.id

Editorial Address
Jl. Majapahit No.62 Mataram NTB

Location
Kota mataram,

Nusa tenggara barat

INDONESIA