JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC)
JEITECH : JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, and ROBOTIC is a journal in Electrical Engineering, Electronic Engineering, Telecommunications Engineering, Computer Engineering, Information Technology, Control and Robotic published by the Department of Electrical Engineering, University of Mataram. This journal is available to researchers who wish to improve their knowledge in a particular field, and intend to disseminate knowledge as a result of research.
Depertment of Electrical Engineering University of Mataram
Pelaksanaan Pemeliharaan Rutin Belt Conveyer untuk Meminimalkan Downtime pada UBP PLTU Jeranjang
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.
Hak Cipta (c) 2025 JEITECH (JOURNAL OF ELECTRICAL ENGINEERING, INFORMATION TECHNOLOGY, CONTROL ENGINEERING, AND ROBOTIC)
Analisis Perhitungan Tegangan Eksiter Untuk Menghasilkan Tegangan Generator 6,3 kV Kondisi Tanpa Beban Pada Mesin ZV PLTD Ampenan
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.
Analisis Tekno-Ekonomi dan Fraksi Energi Terbarukan pada Sistem Energi Hibrid Off-Grid Berbasis Potensi Energi Lokal Menggunakan Software HOMER
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 Hasil Commissioning Test Transformator Distribusi 100 kVA pada Rumah Sakit As Syifa
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.
Peramalan Permintaan Darah Menggunakan Backpropagation Neural Network di UTD PMI Kabupaten Lombok Barat |
In recent years, it noted that the number of requests for blood from hospitals in West Lombok and Mataram exceeded the bloodstock in the PMI Blood Transfusion Unit (UTD) in West Lombok Regency. The blood requests need predicting so there is no shortage of bloodstock. The model of the Backpropagation artificial neural network method is used to estimate the number of short-term blood requests. Predictive performance is analyzed based on the accuracy value based on the Absolute Maximum Percent Error (MAPE). The use of backpropagation neural networks can help respond to emergencies faster and predict more accurately. Accuracy rate prediction results for some type of blood component are: Whole Blood Bank Blood Hospital (WB BDRS) of 22%, BDRS Packet Red Cell blood of 78%, Thrombocyte Concentrate BDRS blood of 84 %, Fresh Frozen Plasma BDRS blood of 80%, WB NON-BDRS blood of 18%, PRC NON-BDRS blood of 66%, TC NON-BDRS blood of 55%, and FFP NON-BDRS blood of 47%. Based on these results, the JST backpropagation method can be used to predict TC BDRS blood and FFP BDRS blood with a good category.
Hak Cipta (c) 2025 JEITECH (JOURNAL OF ELECTRICAL ENGINEERING AND INFORMATION TECHNOLOGY)
MONITORING SPEKTRUM FREKUENSI RADIO RUTIN DI STASIUN TETAP PADA SITE LOMBOK TENGAH MENGGUNAKAN PERANGKAT TCI SCORPIO CLIENT
Monitoring spektrum frekuensi radio secara rutin sangat penting untuk menjamin efisiensi penggunaan spektrum serta mencegah terjadinya interferensi antar layanan komunikasi. Penelitian ini membahas hasil pemantauan spektrum di stasiun tetap pada site Lombok Tengah menggunakan perangkat TCI Scorpio Client pada tanggal 27 Februari 2025. Tujuan utama dari studi ini adalah menganalisis tingkat pemanfaatan spektrum serta mengidentifikasi potensi interferensi berdasarkan pengukuran yang dilakukan pada hari tersebut. Data dikumpulkan melalui metode pengukuran langsung dengan perangkat TCI dan dianalisis menggunakan parameter Frequency Band Occupancy (FBO%) dan spektrum yang terpakai (occupied spectrum). Hasil monitoring menunjukkan bahwa tingkat pemanfaatan spektrum pada tanggal tersebut hanya sebesar 5,854% dari total lebar pita frekuensi yang tersedia, yaitu 61,425 MHz. Pita ketiga menunjukkan tingkat pemanfaatan tertinggi (27,273%), sedangkan pita keempat terendah (0,039%). Hasil ini mencerminkan kondisi spektrum pada saat pengukuran serta menandakan adanya peluang untuk optimalisasi, baik melalui redistribusi pengguna maupun evaluasi kebijakan alokasi frekuensi. Studi ini memberikan kontribusi bagi pengelolaan spektrum yang lebih efisien dan dapat menjadi dasar pemantauan jangka panjang untuk mengamati tren penggunaan spektrum.
RANCANG BANGUN MODUL PERCOBAAN COUNTER DAN BINARY ADDER CIRCUIT DI LABORATORIUM ELEKTRONIKA DIGITAL
This study develops an experimental module for Counter and Binary Adder Circuit practicals to enhance Electrical Engineering students' understanding of logic circuits at the University of Mataram. The Counter circuit, a sequential circuit triggered by a clock signal, includes synchronous and asynchronous types. The Binary Adder Circuit performs binary addition. The module incorporates key components such as JK and D flip-flops, logic gates (AND, OR, XOR, NOT), a shift register, and a full adder. Design and testing confirm proper functionality. The Counter module operates correctly with LED indicators, and the Binary Adder produces accurate binary calculations. This module effectively supports practical learning in logic circuitsThis study develops an experimental module for Counter and Binary Adder Circuit practicals to enhance Electrical Engineering students' understanding of logic circuits at the University of Mataram. The Counter circuit, a sequential circuit triggered by a clock signal, includes synchronous and asynchronous types. The Binary Adder Circuit performs binary addition. The module incorporates key components such as JK and D flip-flops, logic gates (AND, OR, XOR, NOT), a shift register, and a full adder. Design and testing confirm proper functionality. The Counter module operates correctly with LED indicators, and the Binary Adder produces accurate binary calculations. This module effectively supports practical learning in logic circuits
Pendekatan Tekno-Ekonomi untuk Pengembangan Sistem Energi Hibrida Hidro-Biomassa untuk Pasokan Listrik Berkelanjutan di Daerah Pedesaan
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.
Pengaruh Metode Pengukuran Terhadap Akurasi Penentuan Daya Listrik
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.
Daya Listrik Metode Pengukuran Hukum Ohm
Pendekatan Regresi Linear untuk Mengkaji Pengaruh Induktansi pada Efisiensi dan Daya Keluaran Zeta Converter
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.
Hak Cipta (c) 2024 JEITECH (JOURNAL OF ELECTRICAL ENGINEERING AND INFORMATION TECHNOLOGY)
Perancangan Sistem Keamanan Sepeda Listrik Menggunakan Sensor Fingerprint
Sinkronisasi Data Server-Client dengan Network File System Berbasis BashShell melalui Jaringan Virtual Private Network
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.
Aplikasi Perhitungan Faktor Koreksi Kalibrasi Berbasis Android di Dinas Tenaga Kerja dan Transmigrasi
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.
Desain Sistem Pembangkit Listrik Hybrid Off-Grid Menggunakan Software HOMER Untuk Elektrifikasi Di Desa Suryawangi Kecamatan Labuhan Haji Kabupaten Lombok Timur
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 -8°39'49" S, 116°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.
Implementasi Sinkronisasi File Server Dengan Secure File Transfer Protocol
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.
Lalu A. Syamsul Irfan Akbar, ST., M.Eng.
PERENCANAAN PEMBANGKIT LISTRIK TENAGA SURYA ROOFTOP KAPASITAS 600 WP ON GRID
The increasing demand for electric power, along with an economic growth estimated at about 7%-10% per year, means that electricity consumption in Indonesia will rise. As a country with a tropical climate, Indonesia has the potential for renewable energy in the form of solar energy with an average irradiation of 4.5 – 4.8 W/m2. Therefore, the development of solar power plants (PLTS) is highly necessary, leading to the issuance of Ministerial Regulation ESDM Number 26 of 2021, which contains regulations on the installation of rooftop PLTS. This study aims to obtain a 600 Wp capacity on-grid rooftop PLTS system in accordance with Permen ESDM Number 26 of 2021. It also seeks to determine the energy production (kWh/day) and the efficiency of the 600 Wp on-grid rooftop PLTS system. The results obtained from this study include achieving an on-grid rooftop PLTS system with a 600 Wp capacity, obtaining a total production in 1 day over 3 days of 2.3 kWh on day 1, 2.1 kWh on day 2, and 2.2 kWh on day 3. Additionally, the average system efficiency was found to be 9.06% on day 1, 9.12% on day 2, and 8.85% on day 3. These results are based on measurements taken in August, when, according to the solar cycle, the sun is north of the equator, whereas the installation point of the PLTS is in the southern hemisphere.
Desain Sistem Pembangkit Listrik Optimal On-Grid Tenaga Surya Dan Bayu Menggunakan Software Homer Di Kecamatan Asakota, Kota Bima.
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.
Rancang Bangun Modul Percobaan Gerbang Logika Dan Flip-Flop Di Labolatorium Elektronika Dan Digital Fakultas Teknik Elektro Universitas Mataram
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.
PEMELIHARAAN SHUTDOWN MEASUREMENT PADA PERALATAN CURRENT TRANSFORMATOR DAN LIGHTNING ARRESTER PADA BAY LINE KUTA 2 GARDU INDUK 150kV SENGKOL.
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
Pemeliharaan Rutin Trafo Arus (Current Transformer) di Bay Line Kuta 2 Gardu Induk 150 kV Sengkol
PLN sebagai Perusahaan Listrik Negara berupaya memperoleh energi listrik seoptimal mungkin seiring dengan meningkatnya konsumen energi listrik. Untuk menjaga kualitas penyaluran energi dan mencegah kerusakan peralatan, diperlukan sistem pengamanan dan pemeliharaan instalasi gardu induk, termasuk trafo arus sebagai perangkat penting dalam mereduksi arus besar menjadi kecil untuk pengukuran, proteksi dan isolasi. Pentingnya perawatan rutin pada peralatan trafo arus di Gardu Induk Sengkol 150 kV. Melalui metode observasi langsung, studi literatur, wawancara, pengumpulan data, analisis data, dan penyusunan artikel. Perawatan Trafo Arus mempunyai standar pengujian berdasarkan KEPDIR 0520.K/DIR/2014 Manual Trafo Arus. Hasil perawatan pada pemeriksaan Current Transformer level 1, 2 dan 3 menunjukkan hasil yang baik dan sesuai dengan standar yang telah ditetapkan. Maka rekomendasinya adalah melakukan pemantauan rutin dan pengecekan ulang secara signifikan jika diperlukan untuk memperoleh hasil yang baik. Perawatan rutin trafo arus di Gardu Induk Sengkol 150 kV memenuhi standar dan handal untuk aplikasi proteksi dan pengukuran.
Electrical Energy; Maintenance; Inspection;
Pemerataan Beban Pada Gardu Distribusi GS 024 PT.PLN (Persero) UIW NTB
Praktik Kerja Lapangan (PKL) merupakan bagian penting dalam kurikulum Teknik Elektro S-1 Universitas Mataram, memberikan mahasiswa kesempatan langsung belajar tentang dunia kerja. PKL memungkinkan mahasiswa mengamati praktik, peraturan, dan standar kerja perusahaan, mempersiapkan mereka menghadapi tantangan di lapangan sesuai dengan bidang keilmuan atau peminatan mereka. Fokus pada PLN sebagai penyedia energi listrik, artikel ini menyoroti pentingnya pemerataan beban pada gardu, sehingga mengetahui perbandingan dari transformator sebelum dan sesudah dilakukan pemerataan beban di area kerja ULP Ampenan. Artikel ini memaparkan pemerataan beban pada gardu distribusi GS024 dan MM096 PT PLN (Persero) UIW NTB dari yang semulanya keadaan arus beban tiap fasa tidak seimbang menjadi seimbang .
Rancang Bangun Modul Percobaan Seven Segment Dan Shift Register Di Laboratorium Elektronika Dan Digital Fakultas Teknik Universitas Mataram
Design of the seven segment and shift register experimental module. The aim of designing this tool is to make it easier for Electrical Engineering students at Mataram University to retrieve data during practicum. Previously, students needed a long time to collect data, 20-30 minutes, after the existence of this tool, students only needed 10-15 minutes to collec data. In the data seven-segment experiment, the output displayed a seven segment display, while in the shift register experiment the output is shown by an LED indicator, including several subs such as the right shift register, left shift register, and circular shift register. This design uses IC MC14495, 7476, 7432, 7404 and 7408 equipped with several other components... so that output results are obtained that match the input provided.
Analisis pengaruh Co-firing biomasa terhadap kinerja peralatan boiler CFB pada PLTU Jeranjang OMU unit 3
Dalam upaya untuk meningkatkan efisiensi dan mengurangi dampak lingkungan negatif, Indonesia telah mengambil langkah maju dalam menerapkan Energi Baru dan Terbarukan (EBT) sebagai bagian dari matriks energi nasional, salah satu langkah tersebut adalah dengan melakukan co-firing biomassa pada pembangkit listrik tenaga uap (PLTU). Penerapan co-firing tersebut pasti akan berdampak secara langsung maupun tidak langsung pada peralatan boiler. Terdapat tiga pendekatan co-firing yaitu direct, indirect dan paralel, umumnya pendekatan yang sering digunakan adalah direct co-firing karena lebih ekonomis.Dari perbandingan yang dilakukan didapatkan hasil bahwa penerapan co-firing tidak mempengaruhi kinerja peralatan boiler, bahkan efisiensi PLTU semakin meningkat dani polutan yang dihasilkan oleh PLTU berkurang.
Rancang Bangun Prototipe Pengusir Hama Burung Dan Tikus Sawah Berbasis IoT Terintergrasi Aplikasi Android
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.
Pemeliharaan Shutdown Measurement di Bay Line Sengkol 2 Gardu Induk 150 KV Kuta
Praktek Kerja Lapangan merupakan bagian penting dari kurikulum S1 Teknik Elektro Universitas Mataram, memberikan kesempatan kepada mahasiswa untuk belajar langsung tentang dunia kerja. PKL memungkinkan mahasiswa mengamati praktik perusahaan, peraturan dan standar kerja, mempersiapkan mereka menghadapi tantangan di lapangan sesuai dengan bidang ilmu atau spesialisasinya. Berfokus pada PLN sebagai penyedia energi listrik, artikel ini menyoroti pentingnya sistem keselamatan, pemeliharaan, dan pengujian komponen dalam menjaga kualitas distribusi listrik. PT PLN memiliki pedoman pemeliharaan berdasarkan KEPDIR 0520.K/DIR/2014 yang mencakup lima klasifikasi pemeliharaan. Artikel ini menjelaskan studi kasus pemeliharaan pengukuran shutdown pada Gardu Induk 150 kV Kuta, dengan menggunakan Failure Mode Effect Analysis (FMEA) untuk mengevaluasi komponen peralatan primer. Hasilnya menunjukkan bahwa setelah pemeliharaan, kondisi peralatan utama normal dan siap dioperasikan kembali, menegaskan pentingnya pemeliharaan yang tepat dalam menjaga keandalan sistem. Gardu Induk sudah baik dan siap dioperasikan kembali.
Field Work Practices; Maintenance; Shutdown Measurement; Main Substation; Primary Equipment.
Sistem Keamanan Sepeda Listrik Menggunakan Fingerprint
Fingerprint sensor technology has been implemented in a security system for electric bicycles using Arduino IDE as the core of the system. The main components consist of a fingerprint sensor, relay, and buzzer. The fingerprint sensor is responsible for reading the enrolled fingerprint, while the relay serves as a switch to regulate the flow of electricity to the electric bicycle. This approach provides an innovative solution that enhances the security level of the electric bicycle by allowing users to only access the bicycle using an enrolled fingerprint. Thus, the system combines reliable security with user convenience. Based on this research, it was found that the security system using Arduino Uno ATMega328 microcontroller and fingerprint sensor works well, allowing only the registered owner to access the electric bicycle. This proves that the use of biometric technology such as fingerprint sensors can be an effective solution to improve the security of electric bicycles.
Sepeda Listrik; Arduino Uno; Fingerprint; Relay; Buzzer;
Penetration Testing untuk Menguji Sistem Keamanan pada Website
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.
Performance Analysis of Cloud Computing Simulator CloudSim with Virtual Machine Configuration Changes
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.
Analisa Perbandingan Throughput Komunikasi Data 4G Di Kota Mataram Menggunakan Wireshark
The public's need to get high-speed internet services that can be accessed anywhere is a current need. One of the internet network services that is often accessed by the public is video streaming. The emergence of cellular providers with various advantages, each of which is a challenge in choosing a reliable provider. To find out which telecommunications provider/organizer is good for use in an area, especially in the city of Mataram, throughput values were measured using the Wireshark application. The main goal is to find out the throughput value which is a comparison of the download and upload sides. The morning measurement results using provider A had an average value of 484.76 kbps, in the afternoon it was 493.97 kbps and in the evening 401.65 kbps. Meanwhile, measurements using provider B have an average value of 1187.13 kbps in the morning, 1280.04 kbps in the afternoon and 844.46 kbps in the evening. From the calculation results obtained, it was concluded that provider B was better than provider A.
Sistem Informasi Praktek Kerja Industri (Prakerin) Studi Kasus SMK Pariwisata Mataram
The Mataram Tourism Vocational High School still uses a manual system to process data internships for student, teacher, and Prakerin information. An information system is an essential instrumentation to monitor internship implementation. To overcome this problem, a Prakerin Information System was designed and built in this study to help simplify the administrative process of student internships while monitoring its implementation. The Prakerin information system also provides information about Prakerin needed by students and an application form for Prakerin online. In this study, the author uses several methods of data collection, namely observation with data objects, namely at Mataram Tourism Vocational High School, interviews with communication approaches that relate directly to data sources, and literature studies by collecting data by looking for literature about the task to this end. The authors used Python and MySql programming languages, the Bootstrap Framework, and the Django Framework in this study.. The results of testing using the Black box method with 93% success and the method of Mean Opinion Score (MOS) with a score of 4.01. This research resulted in an information system of Mataram Tourism Vocational Industry Practices that helped the administrative process of engineering, such as registration of internships, student data input, school supervisor data, field supervisor data, industrial input, daily activities, and other related to the internship.