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Jambura Journal of Electrical and Electronics Engineering
Published by Universitas Negeri Gorontalo
ISSN : 26547813     EISSN : 27150887     DOI : 10.37905/jjeee
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Jambura Journal of Electrical and Electronics Engineering (JJEEE) is a peer-reviewed journal published by Electrical Engineering Department Faculty of Engineering, State University of Gorontalo. JJEEE provides open access to the principle that research published in this journal is freely available to the public to support the exchange of knowledge globally. JJEEE published two issue articles per year namely January and July. JJEEE provides a place for academics, researchers, and practitioners to publish scientific articles. Each text sent to the JJEEE editor is reviewed by peer review. Starting from Vol. 1 No. 1 (January 2019), all manuscripts sent to the JJEEE editor are accepted in Bahasa Indonesia or English. The scope of the articles listed in this journal relates to various topics, including: Control System, Optimization, Information System, Decision Support System, Computer Science, Artificial Intelligence, Power System, High Voltage, Informatics Engineering, Electronics, Renewable Energy. This journal is available in online and highly respects the ethics of publication and avoids all types of plagiarism.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 20 Documents
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Search results for , issue "Vol 7, No 1 (2025): Januari - Juni 2025" : 20 Documents clear
Performance Analysis of Three Phase Cascaded H-Bridge Multilevel Inverter Design for Solar Power Plant Optimization Widagdo, Reza Sarwo; Slamet, Puji; Hariadi, Balok
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.28035

Abstract

An inverter is an electrical device that converts direct current (DC) into alternating current (AC). Typically, a standard inverter operates at three voltage levels: +Vdc, -Vdc, and 0. However, a multilevel inverter consists of several smaller inverters connected in a series to produce multiple voltage levels at the output. The primary advantage of this type of inverter lies in its ability to produce a much lower harmonic distortion compared to traditional, non-multilevel inverters. Additionally, the switching components of a multilevel inverter operate at lower frequencies, which makes it more suitable for highpower applications. This research focuses on a threephase cascaded multilevel inverter, specifically generating output waveforms with up to seven levels. The study involves conducting experiments using RL loads, to observe how these variations affect the output waveforms and their harmonic distortions. The result, THDi values are much lower, with the 3rd harmonic contributing 0.02%, the 5th contributing 0.006%, the 7th contributing 0.004%, the 9th contributing 0.002%, the 11th contributing 0.002%, and the 13th harmonic contributing just 0.001%. These results suggest that the voltage harmonic more significant harmonic distortion than the current, particularly at the 13th harmonic order. This increase highlights the effect of inductive loads on the performance of the inverter, particularly in terms of harmonic content. These findings are crucial for optimizing multilevel inverters in practical applications, ensuring improved performance and efficiency.
The Potential of Biogas from Organic Waste in the Talumelito Landfill as a Source of Renewable Energy Harun, Ervan Hasan; Ilham, Zul; Ilham, Jumiati; Yusuf, Taufiq Ismail
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.27968

Abstract

Environmental issues and the need for renewable energy sources have driven innovation in utilizing waste as a raw material for energy production. This study aims to assess the potential of organic waste from the Talumelito landfill in Gorontalo Regency as a source of electricity through biogas technology. The methods used involve a mixed approach, combining quantitative measurements of the amount of organic waste and qualitative analysis of the potential biogas and electricity that can be generated. The results show that in one week, a total of 587,427 kg of waste was disposed of at the Talumelito landfill, with 41,650 kg (7.1%) being organic waste. From this organic waste, an average daily biogas volume of 825.6 m³ was obtained, producing a weekly methane gas volume of 3,688.5 m³. The potential electricity generated from this organic waste is 34,634.9 kWh per week, or approximately 4,947.8 kWh per day. The study concludes that organic waste at the Talumelito landfill has significant potential to be developed as an environmentally friendly electricity source.Masalah lingkungan dan kebutuhan akan sumber energi baru terbarukan (EBT) yang ramah lingkungan mendorong inovasi dalam pemanfaatan sampah sebagai bahan baku energi. Penelitian ini bertujuan untuk mengkaji potensi pemanfaatan sampah organik dari Tempat Pembuangan Akhir (TPA) Talumelito di Kabupaten Gorontalo sebagai sumber energi listrik melalui teknologi biogas. Metode yang digunakan adalah pendekatan gabungan (mixed methods) yang melibatkan pengukuran kuantitatif terhadap jumlah timbulan sampah organik dan pendekatan kualitatif untuk menganalisis potensi biogas serta energi listrik yang dapat dihasilkan. Hasil penelitian menunjukkan bahwa dalam satu minggu, total sampah yang masuk ke TPA Talumelito adalah 587.427 kg, dengan jumlah sampah organik sebesar 41.650 kg (7,1%). Dari sampah organik ini, diperoleh volume biogas harian rata-rata sebesar 825,6 m³, dengan volume gas metana mingguan sebesar 3.688,5 m³. Potensi energi listrik yang dapat dihasilkan dari sampah organik tersebut adalah sebesar 34.634,9 kWh per minggu, atau sekitar 4.947,8 kWh per hari. Kesimpulan dari penelitian ini menunjukkan bahwa sampah organik di TPA Talumelito memiliki potensi signifikan untuk dikembangkan sebagai sumber energi listrik yang ramah lingkungan. 
Web Application Design for Service Quality Analysis with SERVQUAL method Febriansyah, Moh Fajar; Dako, Rahmat Deddy Rianto; Lahay, Idham Halid; Dako, Amirudin Yunus; Nasibu, Iskandar Zulkarnain; Musa, Wahab
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.28597

Abstract

Quality measurement consists of three stages: data collection, data testing, and data processing. In general, each of these stages requires a significant amount of time. The process starts with the data collection stage, which may involve questionnaires. Distributing, completing, and collecting questionnaires will take a considerable amount of time. Similarly, the second stage, data testing, is carried out to validate whether the data obtained in the previous stage is accurate or not. The third stage will only take place once the data from the first two stages is deemed valid. Data processing itself also requires a significant amount of time because the data must be entered individually. Based on this issue, a system is needed that can integrate all three stages to expedite the overall process. The objective of this research is to design a web-based service quality measurement application that can integrate all three stages simultaneously. The data processing stage in this research uses the Service Quality method, also known as the SERVQUAL method. The application design is carried out using the Systems Development Life Cycle (SDLC) development method with the prototype model. Application testing is conducted using three stages: alpha testing, beta testing, and usability testing. Alpha testing refers to internal testing of the application. Beta testing, using the black-box method, resulted in a score of 83.33%. Usability testing, using the System Usability Scale (SUS), obtained a score of 81, which falls within the Acceptability Range. In the Adjective Range category, the application was rated as excellent, and on the grade scale, it was rated as B.Pengukuran kualitas memiliki 3 tahapan, yakni pengumpulan data, pengujian data, dan pengolahan data. Secara umum, setiap tahapan ini dilalui dengan durasi waktu yang lama. Berawal dari tahapan pengumpulan data misalnya dengan kuesioner. Penyebaran, pengisian maupun pengumpulan kuesioner akan memerlukan waktu yang tidak singkat. Demikian pula, menuju ke tapanan yang kedua yaitu pengujian data, dimana tahapan ini dilakukan untuk menguji apakah data yang diperoleh pada tahapan sebelumnya valid atau tidak.  Tahapan ketiga akan dilakukan jika data yang diperoleh pada dua tahapan sebelumnya sudah valid. Proses pengolahan data pun akan memerlukan waktu yang cukup lama karena datanya akan dimasukan satu per satu. Berdasarkan permasalahan ini maka diperlukan sebuah sistem yang dapat mengintegrasikan ketiga tahapan tersebut untuk mempercepat keseluruhan proses. Tujuan penelitian ini adalah merancang sebuah aplikasi pengukuran kualitas layanan berbasis web yang dapat mengintegrasikan ketiga tahapan ini sekaligus. Tahapan pengolahan data pada penelitian ini menggunakan metode Service Quality atau lebih dikenal dengan metode SERVQUAL. Perancangan aplikasi dilakukan menggunakan metode pengembangan Systems Development Life Cycle (SDLC) dengan model prototype. Pengujian aplikasi dilakukan menggunakan tiga tahapan, yaitu alpha testing, beta testing, dan tes usabilitas. Alpha testing yaitu pengujian aplikasi secara internal. Beta testing menggunakan metode blackbox mendapatkan hasil sebesar 83,33%. Pengujian tes usabilitas menggunakan System Usability Scale (SUS) dan mendapatkan skor 81, yang masuk pada tingkat Acceptability Range. Pada kategori Adjective Range, aplikasi dinilai berada pada tingkatan excellent, dan pada grade scale berada pada tingkatan B. 
Smartphone-based Automatic Monitor Lizard Trap Prototype for Tilapia Fish Ponds Nanggala, Dikas Pandu; Sulistiyowati, Indah; Saputra, Dwi Hadidjaja Rasjid; Syahrorini, Syamsudduha
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.28309

Abstract

Nila merupakan ikan air tawar yang banyak dibudidayakan karena memiliki beberapa kelebihan dibanding jenis ikan lainnya, ikan ini unggul dalam pertumbuhan cepat, kemudahan berkembang biak, serta kemampuan adaptasi yang baik terhadap lingkungan. Meskipun demikian, budidaya ikan ini tidak lepas dari ancaman hama yang dapat mengganggu, khususnya predator biawak yang dapat menghancurkan populasi ikan dalam kolam dengan cepat. Kemajuan perkembangan teknologi IoT dapat dimanfaatkan dalam pembuatan prototipe perangkap otomatis dengan notifikasi berbasis smartphone. Dengan demikian, pemilik kolam dapat mengetahui jika biawak telah berhasil terperangkap tanpa harus berada di area kolam sepanjang waktu. Penelitian ini menggunakan metode eksperimen, metode ini melibatkan pengamatan dari suatu eksperimen dengan membuat suatu alat serta melakukan uji coba prototipe yang telah selesai dibuat. Alat ini menggunakan sensor PIR sebagai masukan yang akan diproses oleh mikrokontroller ESP32 dengan keluaran berupa pintu otomatis dan notifikasi aplikasi Blynk pada smartphone secara bersamaan. Hasil pengujian pertama menunjukkan penggunaan ESP32 dengan koneksi hotspot mendapatkan perolehan waktu rata-rata 0.76 detik yang dapat dikatakan sangat responsif. Sedangkan untuk pengujian kedua, yaitu  kecepatan reaksi setelah sensor berhasil mendeteksi objek hingga pintu tertutup secara otomatis memperoleh waktu rata-rata 2.33 detik yang tergolong cukup baik meskipun masih ada jeda waktu. Pada pengujian ketiga, perangkap ini berhasil menjebak biawak pada hari ke-3. Meskipun masih terdapat beberapa kekurangan, penelitian ini sangat bermanfaat bagi pembudidaya ikan, terutama pada kolam tanah karena perangkap ini membantu pemilik kolam mengatasi potensi kerugian akibat biawak yang kerap memangsa ikan  hasil budidaya. Selain itu, pemilik kolam juga mendapat penghasilan tambahan dari hasil menjual biawak hidup dibanding menjual biawak mati.Tilapia is a freshwater fish that is widely cultivated because it has several advantages over other types of fish, this fish excels in fast growth, ease of breeding, and good adaptability to the environment. However, this fish farming is not free from the threat of pests that can interfere, especially predatory lizards that can destroy fish populations in ponds quickly. The advancement of IoT technology development can be utilized in making automatic trap prototypes with smartphone-based notifications. Thus, the pond owner can know if the monitor lizard has been successfully trapped without having to be in the pond area all the time. This research uses the experimental method, this method involves observing an experiment by making a tool and testing the prototype that has been completed. This tool uses a PIR sensor as input that will be processed by the ESP32 microcontroller with the output in the form of an automatic door and notification of the Blynk application on the smartphone simultaneously. The first test results show the use of ESP32 with a hotspot connection getting an average time of 0.76 seconds which can be said to be very responsive. As for the second test, which is the speed of reaction after the sensor successfully detects the object until the door is automatically closed, the average time is 2.33 seconds which is quite good even though there is still a delay. In the third test, this trap successfully trapped monitor lizards on the 3rd day. Although there are still some shortcomings, this research is very useful for fish farmers, especially in earthen ponds because this trap helps pond owners overcome potential losses due to lizards that often prey on cultured fish. In addition, the pond owner also gets additional income from selling live monitor lizards instead of selling dead lizards.
Estimation of Electrical Power Needs at PT PLN UP3 Luwuk Using The Linear Regression Method Budianto, Budianto; Mohamad, Yasin; Wiranto, Ifan; Matoka, Arifin; Tolago, Ade Irawaty; Amali, Lanto Mohamad Kamil
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.26560

Abstract

Banggai Regency is one of the areas in Central Sulawesi experiencing rapid economic growth. This condition has led to an increased demand for electricity in the region. Therefore, accurate predictions of electricity demand are needed for proper planning in providing electricity in the future. This research aims to predict the electricity demand in Banggai Regency for the next three years (2024-2026). The research employs the Simple Linear Regression method using historical data on electricity consumption in Banggai Regency. The prediction results indicate that the electricity demand in Banggai Regency will continue to increase. The increase in customers is noted with a percentage increase in social (13,956%), households (12,222%), businesses (8,289%), industries (40,752%), and government (8,014%). The increase in connected power is recorded with a percentage increase in social (30,502%), households (18,315%), businesses (16,037%), industries (40,373%), and government (6,704%). This information is crucial for stakeholders to plan adequate and sustainable electricity infrastructure and policies in Banggai Regency in the future.Kabupaten Banggai merupakan salah satu daerah di Sulawesi Tengah yang mengalami pertumbuhan ekonomi yang cukup pesat. Hal ini menyebabkan peningkatan kebutuhan energi listrik di daerah tersebut. Untuk itu, diperlukan prediksi kebutuhan energi listrik yang akurat agar dapat dilakukan perencanaan yang tepat dalam penyediaan energi listrik di masa depan. Penelitian ini bertujuan untuk memprediksi kebutuhan energi listrik di Kabupaten Banggai dalam kurun waktu tiga tahun ke depan (2024-2026). Metode yang digunakan dalam penelitian ini adalah metode regresi linier sederhana dengan menggunakan data historis konsumsi energi listrik di Kabupaten Banggai. Hasil prediksi menunjukkan bahwa kebutuhan energi listrik di Kabupaten Banggai akan terus meningkat di masa depan Kenaikan pelanggan didapatkan kenaikan dengan persentase sebesar: sosial (13,956%); rumah tangga (12,222%); bisnis (8,289%); industri (40,752%); dan pemerintah (8,014%). Peningkatan daya tersambung tercatat dengan peningkatan persentase sebesar: sosial (30,502%); rumah tangga (18,315%); bisnis (16,037%); industri (40,373%); dan pemerintah (6,704%). Informasi ini penting bagi pemangku kepentingan terkait untuk merencanakan infrastruktur dan kebijakan kelistrikan yang memadai dan berkelanjutan di Kabupaten Banggai di masa depan.
Energy Consumption Monitoring of Solar-Powered Street Lighting Using LoRa and Fuzzy Inference System Rozie, Fachrul; Chandra, Yudi; Suwanda, Ivan
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.27571

Abstract

 Street lighting is a vital infrastructure requiring efficient energy management to reduce operational costs and environmental impact. The use of Internet of Things (IoT) technology like Long Range (LoRa) in energy monitoring systems for street lighting offers a solution for real-time monitoring and control of energy consumption with low cost and wide coverage. This research aims to develop and implement an energy consumption monitoring system for street lighting using LoRa technology, evaluating system performance in terms of monitoring accuracy, reliability, and energy efficiency. The research stages include literature review, system design, hardware and software development, as well as testing and validation. The system is tested in a controlled environment to ensure accuracy and reliability. Data analysis is conducted to identify energy consumption patterns and potential savings. Results show that the voltage of the solar panel system increases during the day with sunlight intensity, while current is utilized as the lights turn on towards the evening. At 19:30, maximum power consumption is within the ideal range, with voltage gradually decreasing as the lights are used. MATLAB analysis reveals a normal energy efficiency value of 50% for the system.Lampu Penerangan Jalan merupakan infrastruktur vital yang memerlukan energi pengelolaan yang efisien untuk mengurangi biaya operasional dan dampak lingkungan. Penggunaan teknologi Internet of Things (IoT) seperti Long Range (LoRa) pada sistem pemantauan energi LPJU menawarkan solusi pemantauan dan pengendalian konsumsi energi secara real-time dengan biaya rendah dan jangkauan luas. Penelitian ini bertujuan dan mengembangkan sistem pemantauan konsumsi energi LPJU menggunakan LoRa, serta menghasilkan sistem kinerja dalam hal pengukuran, pelaporan, dan efisiensi energi. Tahapan penelitian meliputi studi literatur, perancangan sistem, pengembangan perangkat keras dan lunak, serta pengujian dan validasi. Sistem ini diuji di lingkungan terkendali untuk memastikan akurasi dan resolusi. Analisis data dilakukan untuk mengidentifikasi pola konsumsi energi dan penghematan. Hasil penelitian menunjukkan bahwa tegangan sistem panel surya meningkat pada siang hari seiring intensitas sinar matahari, sementara arus digunakan saat lampu menyala menjelang malam. Pada pukul 19.30, konsumsi daya maksimum berada dalam kisaran ideal, dan tegangan menurun seiring penggunaan lampu. Analisis data menggunakan MATLAB menunjukkan nilai efisiensi daya normal sistem ini adalah 50%.
Automatic Depuration System for Green Mussels (Perna viridis) to Support Food Safety Syah, Syalahuddin Abdul Aziz; Suryo, Yoedo Ageng
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.28106

Abstract

The high content of heavy metals in green mussels necessitates the development of an effective depuration system. Automation of the depuration system becomes a crucial solution to optimize efficiency and effectiveness, both in terms of natural and human resource utilization. This research aims to develop an automated depuration system using an ESP-32 microcontroller integrated with digital filters EMA (Exponential Moving Average) and LPF (Low Pass Filter) to enhance sensor reading stability. The monitored water quality parameters include temperature (DS18B20), pH (4502C), TDS (V1.0), and salinity. Measurement data is displayed in real-time through LCD I2C and stored in an SD Card for continuous recording. System testing was conducted for 24 hours, focusing on sensor performance evaluation and pump activity. The results showed that the automated depuration system operated according to the set parameters without deviation. The sensors demonstrated high accuracy with low error percentages: temperature (0.34%), pH (2.02%), TDS (0.91%), and salinity (5.92%). Implementation of this system resulted in a high mussel survival rate of 95%, proving its effectiveness in the green mussel depuration process.Tingginya kandungan logam berat pada kerang hijau mendorong pengembangan sistem depurasi yang efektif. Otomatisasi sistem depurasi menjadi solusi krusial untuk mengoptimalkan efisiensi dan efektivitas, baik dari aspek pemanfaatan sumber daya alam maupun sumber daya manusia. Penelitian ini bertujuan mengembangkan sistem depurasi otomatis menggunakan mikrokontroler ESP-32 yang diintegrasikan dengan filter digital EMA (Exponential Moving Average) dan LPF (Low Pass Filter) untuk meningkatkan stabilitas pembacaan sensor. Parameter kualitas air yang dipantau meliputi suhu (DS18B20), pH (4502C), TDS (V1.0), dan salinitas. Data pengukuran ditampilkan secara real-time melalui LCD I2C dan disimpan dalam SD Card untuk pencatatan berkelanjutan. Pengujian sistem dilakukan selama 24 jam dengan fokus pada evaluasi kinerja sensor dan aktivitas pompa. Hasil penelitian menunjukkan sistem depurasi otomatis beroperasi sesuai dengan parameter yang ditetapkan tanpa penyimpangan. Tingkat akurasi sensor terbukti tinggi dengan persentase error yang rendah; suhu (0,34%), pH (2,02%), TDS (0,91%), dan salinitas (5,92%). Implementasi sistem ini menghasilkan tingkat kelulushidupan kerang yang mencapai 95%, membuktikan efektivitas sistem dalam proses depurasi kerang hijau.
Reliability Analysis of 20kV Distribution System SRN 02 Transmission Line of PT PLN (Persero) UP3 Surakarta Rifa'i, Muhammad; Kanata, Sabhan; Muntasiroh, Laily
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.26291

Abstract

PT. PLN (Persero) Customer Service Implementation Unit (UP3) Surakarta handles customer service and maintains distribution networks in smaller areas such as the SRN 02 Repeater. The repeater serves some areas in Sragen Regency which include agricultural areas, food centers and some industries. With the large number of consumers in SRN 02, making reliable electricity distribution such as the voltage supplied in accordance with the standard and reducing the number of blackouts due to interference. The methods used for reliability analysis are RIA and FMEA methods. Several indices are analyzed, namely the average failure frequency or SAIFI, the average outage frequency or SAIDI, the average customer outage frequency or CAIDI and the frequency of interference to customers or CAIFI. The results of the calculation of the reliability index of SRN 02 in 2023 RIA method for SAIFI 7,256 times / year, SAIDI 21,906 hours / year, CAIDI 3,018 hours / year, and CAIFI 0.325 times / year. While the calculation results with the FMEA method for SAIFI 0.016 times / year, SAIDI 0.487 hours / year, CAIDI 29,609 hours / year, and CAIFI 0.033 times / year. The results of the calculation of SAIFI and SAIDI in the RIA method are not normal in accordance with SPLN 68-2: 1986. While the results of SAIFI and SAIDI calculations in the FMEA method are normal in accordance with SPLN 68-2: 1986.PT. PLN (Persero) Unit Pelaksana Pelayanan Pelanggan (UP3) Surakarta menangani layanan pelanggan dan menjaga jaringan distribusi di wilayah yang lebih kecil seperti pada Penyulang SRN 02. Penyulang tersebut melayani sebagian wilayah di Kabupaten Sragen yang meliputi wilayah pertanian, pusat pangan dan sebagian industri. Dengan banyaknya jumlah konsumen pada Penyulang SRN 02, membuat penyaluran listrik yang handal seperti tegangan yang disalurkan sesuai dengan standar dan berkurangnya jumlah pemadaman akibat gangguan. Metode yang digunakan untuk analisis keandalan yaitu metode RIA dan FMEA. Beberapa indeks yang dilakukan analisis yaitu frekuensi kegagalan rata-rata atau SAIFI, frekuensi pemadaman rata-rata atau SAIDI, frekuensi pemadaman rata-rata pelanggan atau CAIDI dan frekuensi gangguan pada pelanggan atau CAIFI. Hasil perhitungan indeks keandalan Penyulang SRN 02 tahun 2023 metode RIA untuk SAIFI 7.256 kali/tahun, SAIDI 21.906 jam/tahun, CAIDI 3.018 jam/tahun, dan CAIFI 0.325 kali/tahun. Sedangkan hasil perhitungan dengan metode FMEA untuk SAIFI 0.016 kali/tahun, SAIDI 0.487 jam/tahun, CAIDI 29.609 jam/tahun, dan CAIFI 0.033 kali/tahun. Hasil perhitungan SAIFI dan SAIDI pada metode RIA tidak normal sesuai dengan SPLN 68-2:1986. Sedangkan hasil perhitungan SAIFI dan SAIDI pada metode FMEA normal sesuai dengan SPLN 68-2:1986.
Measurement and Monitoring System for Agricultural Soil Environmental Parameters Based on the Internet of Things Amir, Ashadi; Suwardoyo, Untung; Pratami Irwan, Irninthya Nanda
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.27691

Abstract

Measurement and monitoring of environmental parameters in agricultural soil are needed to understand the condition of agricultural land. The measurement of agricultural land is mostly still done manually, resulting in low accuracy levels, requiring significant time and effort, and not providing periodic measurement results. The variation in soil characteristics and the limitations of tools also hinder the effectiveness of measurements, making the use of modern technology increasingly important. In this research, a system has been designed to measure environmental parameters of agricultural soil in real-time. The designed system consists of soil moisture sensors and soil pH sensors integrated with the ESP32 microcontroller. The system comprises of two main parts: a sensor node that have functions to acquire sensor data and a web application that displays the measurement results. Initial testing was conducted by calibrating and validating data for each sensor used. Subsequent testing involved sending the measurement data of environmental parameters of agricultural soil to a database for display on an Internet of Things-based application. The test results showed that the agricultural soil was read as wet when the soil moisture sensor readings indicated values of 78–100%. For the pH sensor testing, the average error was found to be 5.67%.Pengukuran dam pemantauan parameter lingkungan tanah pertanian dibutuhkan untuk mengetahui kondisi tanah pertanian. Pengukuran tanah pertanian sebagian besar masih dilakukan secara manual sehingga tingkat akurasi pengukuran masih rendah, membutuhkan waktu dan tenaga yang besar dan tidak mendapatkan hasil pengukuran secara berkala. Variasi karakteristik tanah dan keterbatasan alat juga menghambat efektivitas pengukuran, sehingga penggunaan teknologi modern menjadi semakin penting. Pada penelitian ini dirancang sebuah sistem yang dapat melakukan pengukuran parameter lingkungan tanah pertanian secara real-time. Sistem yang dirancang terdiri dari sensor kelembaban tanah dan sensor pH tanah yang terintegrasi dengan perangkat mikrokontroler ESP32. Sistem terdiri dari dua bagian utama yaitu sensor node yang berfungsi untuk melakukan akuisisi data sensor dan aplikasi web yang berfungsi untuk menampilkan hasil pengukuran. Pengujian awal dilakukan dengan melakukan kalibrasi dan validasi data untuk setiap sensor yang digunakan. Pengujian selanjutnya dilakukan dengan menguji pengiriman data hasil pengukuran parameter lingkungan tanah pertanian ke database untuk ditampilkan pada aplikasi berbasis Internet of Things. Hasil pengujian menunjukkan bahwa tanah pertanian terbaca basah ketika hasil pembacaan sensor kelembaban tanah menunjukkan nilai 78 – 100%. Untuk pengujian sensor pH menghasilkan nilai error dengan rata-rata sebesar 5.67%.
Implementing AES-RSA Hybrid Encryption to Enhance the Security of Salary Slip Distribution Information System Abdullah, Riska Kurniyanto; Azhar, Nur Fajri; Mujahidin, Syamsul; Hoan, Richard Owen
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.28737

Abstract

This study aims to enhance security and efficiency in the digital distribution of salary slips within the XYZ Higher Education environment. The proposed method combines hybrid encryption using the Advanced Encryption Standard (AES-128) and Rivest–Shamir–Adleman (RSA) algorithms, as well as integrates Time-Based One-Time Password (TOTP) for two-factor authentication. This approach ensures the confidentiality of sensitive data while minimizing the potential for data leakage or unauthorized access to employee salary information. In its implementation, the system is designed using the Laravel framework and the Scrum software development methodology, enabling an iterative, measurable, and easily adaptable development process. Testing results indicate that the system can distribute salary slips with an average data encryption time of 0.15 milliseconds per slip (using AES-128), and an average AES key decryption time with RSA of 5 milliseconds per operation over 100 test iterations. Furthermore, when two-factor authentication (TOTP) was applied, the rate of unauthorized access attempts dropped to 0% across 50 brute force attack simulation attempts. Thus, the hybrid encryption approach is proven effective in maintaining data integrity, and the integration of TOTP enhances user authentication security. These quantitative findings establish the system as a more measurable reference model for other institutions seeking to manage sensitive data securely, efficiently, and reliably.Penelitian ini bertujuan untuk meningkatkan keamanan dan efisiensi dalam pendistribusian slip gaji secara digital. Metode yang diusulkan yaitu memadukan enkripsi hibrida menggunakan algoritma (Advanced Encryption Standard) AES-128 dan (Rivest–Shamir–Adleman) RSA, serta mengintegrasikan Time-Based One-Time Password (TOTP) sebagai autentikasi dua faktor. Pendekatan ini memastikan kerahasiaan data sensitif, sekaligus meminimalkan potensi kebocoran atau akses tidak sah terhadap informasi gaji karyawan. Dalam implementasinya, sistem dirancang menggunakan kerangka kerja Laravel dan metodologi pengembangan perangkat lunak Scrum, sehingga memungkinkan proses pengembangan yang iteratif, terukur, dan mudah diadaptasi. Hasil pengujian menunjukkan bahwa sistem dapat mendistribusikan slip gaji dengan rata-rata waktu enkripsi data sebesar 0,15 milidetik per slip (menggunakan AES-128) dan waktu dekripsi kunci AES menggunakan RSA rata-rata 5 milidetik per operasi, pada skenario 100 percobaan. Selain itu, saat pengujian autentikasi dua faktor (TOTP) diterapkan, tingkat kegagalan akses tidak sah menurun hingga 0% pada 50 percobaan simulasi serangan bruteforce. Dengan demikian, enkripsi hibrida terbukti efektif dalam menjaga integritas data, dan integrasi TOTP meningkatkan tingkat keamanan autentikasi pengguna. Hasil kuantitatif ini dapat dijadikan sebagai model acuan yang lebih terukur bagi institusi lain yang ingin mengelola data sensitif secara aman, dan andal.

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