cover
Contact Name
Dessy Ana Laila Sari
Contact Email
joresd.lontaradigitech@gmail.com
Phone
+6285656227888
Journal Mail Official
fakhri.miftach@gmail.com
Editorial Address
JALAN ABDULLAH DG. SIRUA; KOMPLEKS BTN CV DEWI BLOK B6 NOMOR 12, Makassar
Location
Kota makassar,
Sulawesi selatan
INDONESIA
Journal of Renewable Energy and Smart Device
ISSN : 3031173X     EISSN : 3026216X     DOI : https://doi.org/10.61220/joresd
Journal of Renewable Energy and Smart Device (JORESD) is a journal that publishes high-quality scientific articles in Indonesian or English in the form of research results (top priority) and or reviews in the field of electronics, engineering and renewable energy. This journal covers, but is not limited to the following areas: Computer Engineering Computer Architecture, Parallel and Distributed Computer, Pervasive Computing, Computer Network, Embedded System, Human—Computer Interaction, Virtual/Augmented Reality, Computer Security, VLSI Design-Network Traffic Modeling, Performance Modeling, Dependable Computing, High Performance Computing, Computer Security Control and Computer Systems Optimal, Robust and Adaptive Controls, Non Linear and Stochastic Controls, Modeling and Identification, Robotics, Image Based Control, Hybrid and Switching Control, Process Optimization and Scheduling, Control and Intelligent Systems, Artificial Intelligent and Expert System, Fuzzy Logic and Neural Network, Complex Adaptive Systems. Electronics To Study Microelectronic System, Electronic Materials (semiconductors and optics), Design and Implementation of Application Specific Integrated Circuits (ASIC), System-on-a-Chip (SoC) and Electronic Instrumentation Using CAD Tools, Sensors Information technology Digital Signal Processing, Human-Machine Interface, Stochastic Systems, Information Theory, Intelligent Systems, IT Governance, Networking Technology, Optical Communication Technology, Next Generation Media, Robotic Instrumentation Informatics Information Search Engine, Multimedia Security, Computer Vision, Information Retrieval, Intelligent System, Distributed Computing System, Mobile Processing, Next Network Generation, Computer Network Security, Natural Language Processing, Business Process, Cognitive Systems. Data and Software engineering Software Engineering (Software: Lifecycle, Management, Engineering Process, Engineering Tools and Methods), Programming (Programming Methodology and Paradigm), Data Engineering (Data and Knowledge level Modeling, Information Management (DB) practices, Knowledge Based Management System, Knowledge Discovery in Data) Biomedical Engineering Biomedical Physics, Biomedical Transducers and instrumentation, Biomedical System Design and Projects, Medical Imaging Equipment and Techniques, Telemedicine System, Biomedical Imaging and Image Processing, Biomedical Informatics and Telemedicine, Biomechanics and Rehabilitation Engineering, Biomaterials and Drug Delivery Systems. Power Engineering Electric Power Generation, Transmission and Distribution, Power Electronics, Power Quality, Power Economic, FACTS, Renewable Energy, Smart Grid, Electric Traction, Electric Vehicles, Electromagnetic Compatibility, Electrical Engineering Materials(Conductors, Superconducors, Dielectrics and Magnetics), High Voltage Insulation Technologies, High Voltage Apparatuses, Lightning Detection and Protection, Power System Analysis, Power System Protection, SCADA, Electrical Measurements Telecommunication Engineering Antenna and Wave Propagation, Modulation and Signal Processing for Telecommunication, Wireless and Mobile Communications, Information Theory and Coding, Communication Electronics and Microwave, Radar Imaging, Distributed Platform, Communication Network and Systems, Telematics Services, Security Network, and Radio Communication. JORESD publishes original empirical research (e.g., quantitative, qualitative, and mixed methods designs), project descriptions/evaluations, systematic literature reviews (including meta-analyses), methodological reviews, policy analyses, and theoretical or conceptual positions related to the use and innovative applications of technology in education. JORESD publishes the latest research and critical analysis on technology in education for educational theorists, researchers, practitioners, and policy makers.
Articles 29 Documents
Analisis Perbandingan File Sharing Pada Sistem Terdistribusi Berbasis Cloud Hasana, Uswatul; Massikki, Massikki; Azzahra, Isna Aulia
Journal of Renewable Energy and Smart Device Vol. 2 No. 2 Mei 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v2i2.253

Abstract

This study examines the performance and features comparison of three cloud-based file sharing services Google Drive, Dropbox, and OneDrive within the context of distributed systems. The primary objective is to analyze upload and download speed, security features, collaboration ease, and free storage capacity of each platform. A comparative method with direct experimentation was employed, where files sized 10 MB, 50 MB, and 100 MB were tested on each platform to obtain average transfer times. The results indicate that  Dropbox excels in data transfer speed, Google Drive offers larger free storage and superior real-time collaboration features, while OneDrive stands out for its integration with Microsoft Office applications. All three services demonstrate high levels of data security and availability due to the implementation of distributed systems supporting data encryption, replication, and load balancing. This study provides insights for users to choose a storage platform that suits their needs and encourages further development of more efficient and secure cloud systems.
Perancangan Modul Keamanan Website dan Basis Data dalam Lingkup Sistem Terdistribusi dengan Strategi Pembelajaran Berbasis Case Method Ramli, Hartini; Kadir, Muh. Yasin; Hatima, Husnul; Dini, Juliano Nufiansyach; Al'Safinat.R, Reyna Buryani; Azhari, Reynaldi Nafzal
Journal of Renewable Energy and Smart Device Vol. 2 No. 2 Mei 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v2i2.254

Abstract

In today's digital era, information systems have evolved from centralized models to distributed systems that span across various platforms and geographic locations. While this transformation enhances efficiency and scalability, it also increases security risks, particularly concerning websites and databases, which are core components of digital services. This module is designed to provide in-depth understanding of information security within distributed systems, focusing on the protection of websites and databases. The learning approach applies the case method, placing students in real or simulated scenarios to analyze, solve problems, and design security solutions based on the principle of defense in depth. This module aims to enhance students' critical thinking and technical skills in addressing ever-evolving information system security threats.
Analisis Performa Load balancing pada Web Server Menggunakan Nginx Khaidir; Prasojo, Kholik; Herlina; Fadhlurrahman, A. Muhammad Fuad
Journal of Renewable Energy and Smart Device Vol. 2 No. 2 Mei 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v2i2.255

Abstract

The rapid development of information technology, particularly in the use of web-based services, has resulted in increased data traffic to servers. Without proper management, this may lead to decreased system performance. Load balancing is an approach introduced in technology education to teach technical solutions for server load management. This study aims to analyze the impact of implementing load balancing using Nginx software on web server performance. The method applied is a quantitative experiment involving two testing scenarios: before and after the implementation of load balancing using the Round Robin algorithm. The testing environment was built using virtualization with the Ubuntu Server operating system, and performance measurements were conducted using Apache Benchmark and JMeter. The analyzed parameters include latency, throughput, and response time. The findings show that implementing load balancing can significantly improve system efficiency, making it a relevant learning case in computer networking and system administration courses..
Implementasi dan Evaluasi Sistem Keyword Spotting Real-Time berbasis Google Speech API pada Asisten Cerdas Sederhana di Google Colaboratory Singgih Astaguna T; Muhammad Fauzan Yusuf; Izza Etthiyyah RN; Sari, Dessy Ana Laila
Journal of Renewable Energy and Smart Device Vol. 2 No. 2 Mei 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v2i2.256

Abstract

The development of voice recognition technology, particularly Keyword Spotting (KWS) , offers significant potential for critical applications such as emergency response systems in the healthcare sector. The use of cloud-based Application Programming Interfaces (APIs) like the Google Speech API provides an accessible development pathway for these applications , but its performance in specific contexts, such as for the Indonesian language, requires thorough evaluation. This study aims to implement and evaluate the performance of a real-time KWS system based on the Google Speech API within a simple smart assistant prototype designed for healthcare emergency scenarios. The system was implemented on Google Colaboratory using a Text-based KWS approach. Quantitative testing was conducted with two male participants who uttered five Indonesian target keywords ("Hi", "Tolong", "Aduh", "Oke", "Salam") , with 25 repetitions for each keyword, resulting in a total of 250 test samples. System performance was measured using the Success Rate metric, calculated from the classification of True Positives (TP)  and False Negatives (FN). The results show that the system was functionally implemented with a combined detection success rate of 62.8%. Significant performance variation was found both among keywords (highest success rate for 'Tolong' at 72.0% ) and between participants (77.6% vs. 48.0% ), highlighting speaker dependency. It is concluded that the Google API-based KWS approach is feasible for rapid prototyping, but the current accuracy and performance variability indicate the need for more robust and specific model development before it can be relied upon for critical healthcare applications.
Analisis Potensi PLTS di Pantai Losari Makassar Menggunakan HOMER Muhammad Rifai N; Sulistiyono
Journal of Renewable Energy and Smart Device Vol. 3 No. 1 November 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v3i1.251

Abstract

Penelitian ini bertujuan untuk menganalisis potensi pengembangan Pembangkit Listrik Tenaga Surya (PLTS) di Pantai Losari, Makassar, sebagai solusi untuk mengurangi ketergantungan pada energi fosil dan meningkatkan ketahanan energi lokal. Dengan menggunakan perangkat lunak HOMER, penelitian ini mensimulasikan berbagai konfigurasi sistem pembangkit listrik on-grid untuk mengevaluasi efisiensi teknis dan ekonomis. Lokasi penelitian memiliki potensi energi terbarukan yang signifikan, dengan rata-rata radiasi matahari 5,87 kWh/m²/hari. Hasil simulasi menunjukkan bahwa skenario optimis mampu menghasilkan 386.832 kWh energi per tahun dengan biaya energi Rp408,23/kWh dan Net Present Cost (NPC) Rp1.929.310.277, memberikan potensi keuntungan yang tinggi. Namun, skenario pesimis menunjukkan biaya energi Rp941,45/kWh, yang kurang layak secara ekonomis. Rancangan sistem menggunakan panel surya, baterai, dan konverter dengan total kebutuhan energi harian 276,7 kWh. Penelitian ini menyimpulkan bahwa PLTS di Pantai Losari berpotensi menjadi solusi energi berkelanjutan yang efisien dan ekonomis, terutama dalam skenario optimis, serta dapat mendukung upaya pelestarian lingkungan dan pemenuhan kebutuhan energi lokal.
ANALISIS KELAYAKAN SISTEM PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) ON-GRID PADA KOS DENGAN SIMULASI APLIKASI HOMER DI KELURAHAN KARUNRUNG Humam Maghfirrahman; A. Muh. Zulfajriawan; Massikki
Journal of Renewable Energy and Smart Device Vol. 3 No. 1 November 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v3i1.252

Abstract

Penelitian ini mengkaji potensi Pembangkit Listrik Tenaga Surya (PLTS) untuk satu unit kos di Kelurahan Karunrung, Makassar, dengan menggunakan software HOMER. Fokus utama dari penelitian ini adalah untuk menganalisis kelayakan teknis dan ekonomis dari pengembangan PLTS dalam memenuhi kebutuhan energi penghuni kos. Data radiasi matahari harian menunjukkan bahwa Kelurahan Karunrung memiliki potensi yang baik dengan rata-rata radiasi sekitar 5,5 kWh/m². Dengan asumsi kebutuhan energi untuk satu unit kos mencapai 4 .109 kWh per tahun, hasil analisis teknis menunjukkan bahwa kapasitas sistem PLTS yang diperlukan dapat dicapai dengan pemasangan panel surya yang sesuai, dengan efisiensi di atas 85%. Dari segi ekonomi, total biaya investasi awal untuk sistem PLTS diperkirakan mencapai Rp 70.000.000,lebih dengan potensi penghematan biaya listrik dan pendapatan dari penjualan surplus energi. Simulasi menggunakan HOMER menunjukkan bahwa sistem PLTS on-grid dapat memberikan keuntungan yang signifikan bagi pemilik kos. Hasil penelitian ini merekomendasikan langkah-langkah edukasi tentang energi terbarukan dan insentif dari pemerintah untuk mendorong adopsi PLTS di sektor perumahan, sehingga dapat meningkatkan akses energi berkelanjutan dan mengurangi biaya operasional.
Load Shedding Analysis using Under Frequency Relay (UFR) at Bolangi Substation using ETAP Software Rezky Ramadhani; Yunus Tjandi; Zulhajji; Muh. Iswal Burhan
Journal of Renewable Energy and Smart Device Vol. 3 No. 1 November 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v3i1.253

Abstract

This study aims to analyze the performance of the load shedding system using Under Frequency Relay (UFR) at the Bolangi Substation as an effort to maintain the stability of the power system frequency. A supply disruption from Bayline Daya Baru (#2) occurred, namely a disturbance due to a lightning strike, which is an important background in this study. A decrease in frequency due to power imbalance can cause a total power outage (blackout), so a responsive UFR protection system is needed. Simulations were carried out using ETAP 19.0 software with a bayline release scenario to analyze the frequency response and effectiveness of automatic load shedding. The simulation results show that a frequency decrease of up to 48.60 Hz can be restored to 50 Hz in 2.47 seconds through gradual load shedding of 13.34 MW by UFR stages 2 and 4. This study provides an overview of the load shedding stages based on the frequency setting values ​​and periodic UFR working times as well as the use of ETAP for continuous evaluation of the protection system at the substation.
Perencanaan Sistem Pembangkit Listrik Tenaga Surya pada Desa Andau di Polewali Mandari Nurul Tisya Febriati; Khairil Anwar; Prasojo, Kholik
Journal of Renewable Energy and Smart Device Vol. 3 No. 1 November 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v3i1.254

Abstract

Solar Power Plants (PLTS) are a renewable energy solution that is very relevant in Indonesia, especially in areas with high solar radiation intensity such as Sulawesi. This study evaluates the PLTS system in Andau Village by highlighting the efficiency of solar panels which is influenced by temperature and intensity of solar radiation. Based on data, the average daily radiation in the region ranges from 3.8 to 6.7 kWh/m², making Sulawesi a strategic location for PLTS development. Solar cells, or photovoltaics, are devices that can directly convert sunlight energy into electricity. As the main component, solar cells have an important role in utilizing the enormous potential of solar energy that reaches the earth's surface. Apart from producing electricity, solar energy can also be optimized to produce heat energy through a solar thermal system.
ANALISIS KOORDINASI SETTING PROTEKSI OCR PADA KUBIKEL INCOMING DENGAN OUTGOING 20 kV DI GARDU INDUK LANNA MENGGUNAKAN SOFTWARE ETAP Indah Safirah; Ruslan; Al Imran
Journal of Renewable Energy and Smart Device Vol. 3 No. 1 November 2025
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/joresd.v3i1.255

Abstract

Peningkatan kebutuhan akan energi listrik menuntut sistem distribusi yang andal, selektif, dan aman dari gangguan. Salah satu komponen penting dalam sistem proteksi adalah Over Current Relay (OCR), yang berfungsi untuk mendeteksi dan memutus aliran arus lebih akibat gangguan hubung singkat. Pada Gardu Induk Lanna 150 kV, koordinasi OCR antara kubikel incoming dan outgoing 20 kV belum menunjukkan kinerja yang optimal. Berdasarkan hal tersebut, penelitian ini dilakukan untuk menjawab dua rumusan masalah: bagaimana koordinasi proteksi OCR saat terjadi gangguan hubung singkat, dan bagaimana menentukan nilai resetting yang tepat agar sistem proteksi bekerja secara selektif. Penelitian ini menggunakan metode perhitungan arus gangguan 3 fasa, penentuan setting OCR menggunakan karakteristik kurva Standard Inverse, dan simulasi fault insertion dengan software ETAP 19.0.1. Hasil simulasi menunjukkan bahwa pada kondisi existing, seluruh nilai Δt berada di atas standar minimum selektivitas (0,2 detik), dengan nilai terkecil 0,605 detik. Meskipun sudah memenuhi syarat selektivitas, nilai Δt pada kondisi existing dianggap kurang optimal karena menunjukkan variasi yang tidak seragam dan waktu kerja cadangan yang relatif lambat pada beberapa titik (melebihi 1 detik), sehingga mengurangi efisiensi proteksi. Setelah dilakukan resetting, diperoleh nilai Δt antara 0,709 hingga 0,829 detik, dengan pola waktu kerja yang lebih seimbang antar titik gangguan. Hal ini membuktikan bahwa resetting setting OCR dapat meningkatkan selektivitas, efisiensi waktu, dan keandalan sistem proteksi sesuai dengan standar IEEE 242-1986 dan IEC 60255.

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