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JEITECH (JOURNAL OF ELECTRICAL ENGINEERING AND INFORMATION TECHNOLOGY)
Published by Universitas Mataram
ISSN : -     EISSN : 2987730     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering
The Aims and scope of the JEITECH are Power System, Telecommunication, electronics and computer of informatics , including: Electrical Power Systems High Voltage Technology Renewable Energy Power Electronics Sensing and Automation Telecommunication system and technique Signal Processing Image Processing Internet of Things Artificial Intelligence Data Science Analytic Biomedical Engineering
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 77 Documents
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Analisis Hasil Commissioning Test Transformator Distribusi 100 kVA pada Rumah Sakit As Syifa Hadinata, Angga Pratama; Nrartha, I Made Ari; Nababan, Sabar
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 3 No. 2 (2025): Edisi Agustus 2025
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

Commissioning test on a distribution transformer is a series of tests conducted to ensure that the distribution transformer functions properly and meets the specifications before it is put into operation. This testing is crucial to verify that the transformer is ready for use in the electrical distribution system and to prevent potential issues or failures in the future. The commissioning test includes measuring insulation resistance, ground resistance, and phase-to-phase and phase-to-neutral voltages. The instruments used for these measurements are an insulation tester, earth tester, and clamp meter. The measurement results in this study are all in accordance with PLN standards. The insulation resistance measurements for phases R, S, and T are 2.99 GΩ, 2.34 GΩ, and 2.54 GΩ, respectively. For grounding resistance, the measurements for the neutral of the main distribution panel (PHB), transformer body, and lightning arrester are 2.72 Ω, 3.32 Ω, and 2.87 Ω, respectively. In the phase-to-phase voltage measurements, the values for phases R-S, R-T, and S-T are 406 V, 405 V, and 407 V, respectively. In the phase-to-neutral voltage measurements, the values for phases R, S, and T are 232 V, 233 V, and 233 V.
Analisis Tekno-Ekonomi dan Fraksi Energi Terbarukan pada Sistem Energi Hibrid Off-Grid Berbasis Potensi Energi Lokal Menggunakan Software HOMER Muljono, Agung Budi; Yanuardi, Yanuardi; Supriyadi, Agus; Harjian, Muhammad Rivaldi
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 3 No. 2 (2025): Edisi Agustus 2025
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

The development of an off-grid hybrid energy system based on local energy potential offers a solution to improve energy access in remote areas. Lenek Village, located in East Lombok, West Nusa Tenggara (NTB), has renewable energy potential in the form of solar and biomass energy. This study aims to conduct a technical and economic analysis of an off-grid hybrid energy system that utilizes this local energy potential using HOMER software. The study evaluates the renewable energy fraction, capital cost, operating cost, and overall system economic feasibility. The results show that the energy supply combination includes a photovoltaic (PV) fraction of 15%, biomass generator of 15%, and wind energy of 69%, at a competitive cost. The use of HOMER software facilitates system analysis and optimization. The total cost required for overall power generation (Total Net Present Cost) is US$2,351,595, with a cost of energy (COE) of US$0.674 per kWh.
Analisis Perhitungan Tegangan Eksiter Untuk Menghasilkan Tegangan Generator 6,3 kV Kondisi Tanpa Beban Pada Mesin ZV PLTD Ampenan Ida Ayu Sri , Adnyani; Michael Jonathan M
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 3 No. 2 (2025): Edisi Agustus 2025
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

Analysis of the excitation voltage required to produce an output voltage of 6.3 kV on the ZV-type synchronous generator, Unit 2, at PLTD Ampenan under no-load conditions. The stability of the generator's output voltage is significantly influenced by the excitation voltage, which is regulated through the Automatic Voltage Regulator (AVR) system. The study was conducted using two approaches: direct field measurements and a mathematical approach based on the magnetic induction voltage formula. Field measurements indicated that the average excitation voltage required was 7.24 VDC, while the mathematical approach yielded a value of 7.7 VDC. This discrepancy is attributed to the use of assumed parameters, such as the number of windings on the stator and rotor, as well as the omission of certain technical factors, including temperature, impedance, reactance, and voltage losses. This analysis aims to provide a technical understanding of the influence of excitation voltage on generator performance and to serve as a foundation for controlling and maintaining the excitation system to ensure that the generator's output voltage remains stable. It is expected that this study will support the reliability of power supply at PLTD Ampenan and serve as a technical reference in the operation of synchronous generators.
Pelaksanaan Pemeliharaan Rutin Belt Conveyer untuk Meminimalkan Downtime pada UBP PLTU Jeranjang Sultan; Budiman, Djul Fikri; Anggara, Lalu surya
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 3 No. 2 (2025): Edisi Agustus 2025
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

The Field Work Practice (PKL) at UBP PLTU aimed to understand and analyze routine maintenance of the belt conveyor system to reduce downtime. Methods used included direct observation, interviews, data analysis, and post-maintenance condition evaluation. Before implementing routine maintenance, downtime occurred 5–7 times per month due to belt wear, misalignment, motor overheating, and spillage. After applying preventive and condition-based maintenance strategies, downtime significantly decreased to 1–2 times per month, and corrective maintenance needs were reduced by up to 60%. Routine maintenance also helped stabilize motor temperatures, reduce vibration, and extend uninterrupted operating time. Challenges such as delays in spare part procurement and errors in CMMS usage were addressed through technician training and improved monitoring systems. In conclusion, well-planned routine maintenance effectively improves the efficiency and stability of operations. Recommendations include strengthening human resource capacity, enhancing digital monitoring, proactive spare part management, fostering a preventive work culture, and conducting regular evaluations and audits.
MONITORING SUHU AIR PADA KOLAM IKAN KOI BERBASIS BLYNK Ozi, Zulhan Ozi Firmanu; Lalu A. Syamsul Irfan Akbar
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 1 No. 2 (2023): Edisi Oktober 2023
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

Koi fish is a type of fish that is in great demand by all levels of society, with various body patterns and colors. Koi fish have high economic value and promising business potential, so they are widely cultivated. Koi fish need more attention in cultivation. One growth factor that can be seen is remote monitoring of pool temperature. The ideal temperature for koi fish is between 24℃ – 30℃. So we need a tool that is used to facilitate monitoring of temperature in koi fish ponds remotely. By using the DS18B20 temperature sensor, ESP32 microcontroller and using one of the IoT platforms, namely Blynk. IoT is a concept utilization that aims to expand the benefits of continuously connected internet connectivity. The sensor will send temperature measurement results to the ESP32 microcontroller, ESP32 which is connected to an Internet-connected Access Point will send temperature measurement results to the cloud and can be seen in the Blynk software. Based on the test, it can be concluded that the whole process went well according to the design and initial purpose of making a Blynk-based koi pond water temperature monitoring system.
Rancang Bangun Modul Percobaan Gerbang Logika Dan Flip-Flop Di Labolatorium Elektronika Dan Digital Fakultas Teknik Elektro Universitas Mataram Pramesty, Kinkin Ayu Pramesty; Darmawan, Budi; Ch, Syafaruddin
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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Abstract

This research aims to deepen understanding of theory in lectures through practicum. The practicum module was created to facilitate data retrieval during a practicum at the Electronics and Digital Laboratory, Faculty of Electrical Engineering, University of Mataram, which was realized in the design of the logic gate and flip-flop experiment module, based on the logic gate and flip-flop experiment module, on logic gates using 7 IC namely AND gate (IC 7408), OR gate IC (IC 7432), NOT gate IC (IC 7404), NAND gate IC (IC 7400), NOR gate IC (IC 7402), XOR gate IC (IC 7486), XNOR gate IC (IC 74266), resistors, led indicators, and switches, on Flip-Flops using 2 logic gate ICs namely NOT gate IC (IC 7404), NAND gate IC (IC 7400), and a JK Flip- Flops (IC 7476), and clocks that use push buttons that have been connected to Arduino, resistors, led indicators, and switches, from the designed modules, the results show that the logic gates and flip-flop experiments are by the experimental steps and the truth table his.
RANCANG BANGUN MONITORING PENGGUNAAN AIR DAN ESTIMASI TAGIHAN PDAM BERBASIS INTERNET OF THINGS (IOT) Ramadhani , Lalu Thoriq; Darmawan, budi; wrindi, Warindi
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 1 No. 2 (2023): Edisi Oktober 2023
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

Water is a very important source of life for survival on earth. Clean water services are generally carried out by the Regional Drinking Water Company (PDAM) which is distributed to each resident's house. The meter functions to measure and record how much debit has been used for the needs of each household. In addition customers feel that there is no cost transparency and cannot estimate the amount of fees that must be paid each month. The purpose of this study was to produce a system for monitoring PDAM water use and billing using the NodeMCU ESP8266 with the YF-S201 sensor. This digital water meter hardware is designed using a water flowmeter sensor (YF-S201) which will read the debit of water flowing from the customer's water meter, the results of reading the water flowmeter sensor in the form of pulses then by NodeMCU ESP8266 it becomes an accumulative debit with units of Volume Liters and Volume. Cubic meter. Displays on the LCD and on Telegram are in the form of flow, total liters, total cubic meters and costs. From the test results Based on the analysis of 10 samples the YF S201 sensor has the highest error of 3.00% and the lowest is 0.33% and the average error is 1.53% so that the accuracy of the YF-S201 sensor is 98%.
Performance Analysis of Cloud Computing Simulator CloudSim with Virtual Machine Configuration Changes giriwahyuwiriasto; M. Fajar Wirayudha; Ahmad Satriadi
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 1 (2024): Edisi Maret 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

In the era of digital transformation, cloud computing simulation plays a crucial role in understanding and optimizing system performance before implementation. This research focuses on the performance analysis of CloudSim simulation by varying virtual machine (VM) parameters. The altered parameters include processor speed (MIPS), RAM size, and the number of CPUs. The research objective is to comprehend the impact of these changes on overall cloud system performance. Experimental methods involve CloudSim initialization, datacenter, and broker creation, along with VM and cloudlet configuration. Simulation results are analyzed to unveil the relationship between VM parameters and cloudlet execution time. This study aims to provide practical guidelines for optimizing VM configurations in the cloud environment, enhancing system efficiency and responsiveness. The research findings have implications for the development of more adaptive and effective cloud systems in the future, serving as a foundation for further advancements in the field.
Rancang Bangun Prototipe Pengusir Hama Burung Dan Tikus Sawah Berbasis IoT Terintergrasi Aplikasi Android Ch, Syafarudin; Darmawan, Budi; rizky, Febrian
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 1 (2024): Edisi Maret 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

Pests are one of the scourges that often lead to crop failure. Some challenges faced by farmers in growing rice include rat and bird pests. Therefore, this study designs a system to repel pests. It uses an ESP32 microcontroller connected to a PIR (Passive Infrared Sensor) to detect pest movement. When pests are detected, the system will activate several pest repelling components, including a buzzer to produce a sound that scares rats, an electrified wire fence to repel rats, and a servo that moves to repel birds, where the servo will also be active if an anemometer detects winds of 3000-4000 m/s. The tool is monitored in real time using Arduino Cloud IoT software connected to the internet. The purpose of monitoring is to determine the success of the tool in repelling pests. This prototype system has been tested on a small scale, with separate tests for rat and bird pests. The PIR sensor successfully detected pest movement within a range of up to 4 meters. From the testing on 8 birds, 5 were successfully repelled by the servo movement. For rats, the buzzer effectively disturbed rats up to a distance of 40 cm, and with the support of a high voltage module kit, rats were successfully repelled up to a distance of 80 cm. Then the pests can be monitored in real time using Arduino Cloud IoT software. Then field testing was conducted on the prototype for 6 days, where the development of the success rate of the tool was observed from 3 days without repelling and 3 days of repelling to find out the difference in the number of pests repelled. The results of the testing showed a decrease in rat and bird pests, with a decrease in the number of rats and birds detected.
Penetration Testing untuk Menguji Sistem Keamanan pada Website Muhammad Arif Madani
JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC) Vol. 2 No. 1 (2024): Edisi Maret 2024
Publisher : Depertment of Electrical Engineering University of Mataram

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Abstract

The use of websites has a significant role in increasing efficiency, transparency, and public participation in public administration processes. Websites have become effective tools for providing accurate and up-to-date information about public policies, programs, and services. Although the use of websites has contributed positively, challenges such as website security need to be improved. The goal to be achieved in this study is to conduct penetration testing with the Black Box method by referring to the Open Web Application Security Project (OWASP) Top 10-2021. The number of subdomains tested was 3 identified subdomains. All vulnerability assessments are carried out in 4 stages consisting of footprinting, scanning, exploitation, and reporting. This penetration testing refers to Web Security Guide (WSTG) guidance document version 4.2. The result of this study was the discovery of 3 vulnerabilities with a distribution of 1 High, 1 Low, and 1 Informational. The final process of this research is in the form of recommendations that can be used as a reference for website application developers to deal with vulnerabilities, especially loss of service availability and data leakage.

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