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ELPOSYS: Jurnal Sistem Kelistrikan
Published by Politeknik Negeri Malang
ISSN : 2407232X     EISSN : 24072338     DOI : https://doi.org/10.33795
Core Subject : Science, Engineering,
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering
ELPOSYS adalah jurnal nasional yang menyediakan sumber informasi ilmiah bagi peneliti dan akademisi, lembaga penelitian, lembaga pemerintah, dan industri. Kami menerbitkan research papers, review articles, dan case studies yang berfokus pada bidang ketenagalistrikan serta topik yang terkait. Semua makalah di-review oleh setidaknya dua reviewer. ELPOSYS diterbitkan oleh UPT – P2M Politeknik Negeri Malang dan diterbitkan tiga kali setiap tahun, yaitu Bulan Februari, Juni, dan Oktober. Artikel yang dipublikasikan bidang ilmunya sesuai atau relevan dengan topik-topik Jurnal ELPOSYS yang meliputi bidang (namun tidak terbatas pada): - Pembangkit, - Distribusi dan Transmisi Daya, -Konversi Daya, - Sistem Proteksi, - Transformator, - Teknologi Instalasi Listrik, - Kualitas Daya, - Aplikasi Teknologi Informasi pada Sistem Daya, - Aplikasi Kontrol Cerdas pada Sistem Daya, - Teknologi Pembangkitan berbasis Energi Terbarukan, - Mesin-mesin Listrik, - Pemodelan dan Simulasi Sistem Daya, - Elektronika Daya, - Pengukuran Besaran Listrik, - Kestabilan Sistem Daya, - Topik lain yang terkait.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 184 Documents
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Optimalisasi Konfigurasi Fasa Vertikal Pada Saluran Udara Tegangan Ekstra Tinggi Ruwah Joto; Dhesah Kharisma, Dhimas; Mochammad Mieftah; Aly Imron
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 1 (2025): ELPOSYS vol. 12 no. 1 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i1.6848

Abstract

The dangers arising from the 500 kV extra high voltage overhead lines to the surrounding environment can actually be minimized in several ways. One of the methods is to change the configuration of the conductor arrangement. Based on the laws in field theory which state that the magnitude of the field quantity on a charged conductor can differ depending on the distance, area, or volume, an analysis was carried out to understand the effect of the phase arrangement on the electric field intensity under the 500 kV overhead transmission line. The Finite Difference Method uses a numerical approximation to the partial derivative of the differential equation describing the electric field. The use of the Hybrid Tower combines vertical and horizontal designs to achieve a balance between low electric fields and land efficiency. Of the 36 combinations of phase arrangements on transmission lines with a double-circuit vertical configuration, there is a large variation in the resulting field intensity. Information on the phase arrangement that produces the smallest field intensity is very important. The arrangement of 36 (arrangement T1-S1-R1: T2-S2-R2) produces the lowest electric field intensity. Compared with the super bundle arrangement (arrangement R1-S1-T1: R2-S2-T2), there is a decrease in field intensity of up to 45.842%, while compared with the low reactance arrangement (arrangement R1-S1-T1: T2-S2-R2), there is a decrease in field intensity of up to 33.374%.
Implementasi Sistem Proteksi Arus dan Tegangan Lebih pada PLTS 10x100 Wp Djulihenanto , Saddani; Saputra, Masramdhani; Hermawan, Satria Luthfi; Akbar, Divac Nabiel; Gumilang, Binar Surya; Putri, Amala Wicaksana
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 1 (2025): ELPOSYS vol. 12 no. 1 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i1.6849

Abstract

The increasing adoption of solar power systems has highlighted the need for effective overcurrent and overvoltage protection to ensure operational reliability and safety. This study aimed to implement and evaluate a protection system for a 10 × 100 Wp solar power plant at PPYD Al-Ikhlas, Singosari, Indonesia. The research employed an experimental approach, including testing Miniature Circuit Breakers (MCBs), Surge Protection Devices (SPDs), and grounding systems. MCBs were evaluated using an injection current tester to assess their tripping characteristics, while SPDs were tested for continuity using a multimeter. The grounding system was examined with an earth tester to measure its resistance before and after implementing a parallel electrode configuration. The results indicated that the installed protection system significantly enhanced safety, with MCBs effectively disconnecting excessive currents as per IEC 60898-1 standards. The SPD successfully mitigated transient voltage surges, and the grounding system reduced resistance below 5 Ω, complying with PUIL 2020 standards. These findings support previous studies on electrical protection and grounding efficiency, emphasizing the need for tailored solutions in small-scale solar systems. Future research should explore real-time monitoring with IoT-based systems and optimize grounding configurations for high-resistivity soils. The proposed protection approach contributes to enhancing the resilience of distributed solar power installations.
Optimasi Sistem Pengisian MPPT Berbasis Fuzzy logic Pada Panel Surya Zuroida, Afidah; Irwan Heryanto/Eryk; Alfina Salsabella Ramandhani
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 1 (2025): ELPOSYS vol. 12 no. 1 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i1.6852

Abstract

The transition to renewable energy is a crucial step in achieving sustainable development. However, the efficiency of Photovoltaic (PV) systems remains a challenge due to fluctuations in solar irradiation, which affect power generation. This study aimed to enhance Maximum Power Point Tracking (MPPT) performance by integrating Fuzzy logic Control (FLC) into the charging system of a solar power plant. The research employed an experimental approach involving the testing of a 100 Wp PV module and a 44 Ah battery, where data collection was conducted at 10-minute intervals from 10:30 AM to 3:00 PM. The proposed FLC-based MPPT system was compared with a conventional MPPT system to evaluate charging efficiency, power stability, and response time. The findings indicated that the FLC-based MPPT exhibited superior stability, maintaining output voltage within 12V to 12.5V, whereas the non-Fuzzy MPPT showed wider voltage variations. Additionally, the FLC-based system achieved an average charging current of 2.05 A, reducing the full battery charging time to 21 hours 46 minutes, compared to 46 hours 31 minutes for the conventional MPPT system. These results confirm that FLC enhances MPPT performance, particularly in optimizing power output and reducing charging time. However, efficiency trade-offs were observed due to step-down losses in the buck converter. Future research should focus on hybrid MPPT approaches, parameter optimization, and large-scale implementation, potentially integrating Artificial Intelligence (AI) techniques to further improve efficiency. This study contributes to advancing intelligent MPPT systems for renewable energy applications.
Implementasi Relai Low Impedance Pada Gardu Induk 150 kV Lengkong Lama Hermawan, Ahmad; Harijanto, Priya Surya; Wiguno, Fadhil; Hermawan, Satria Luthfi
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.7234

Abstract

The substation played a vital role in the distribution of electrical power from the generator to end users, requiring a reliable protection system to ensure continuity and safety. At the 150 kV Lengkong Substation, the existing busbar protection system used an electromechanical high impedance relai, which lacked the sensitivity, selectivity, and reliability demanded by current operational standards. This research aimed to improve the reliability of the substation’s protection system by replacing the high impedance relai with a digital low impedance numerical relai (GE P746). The method involved direct field observation, data collection, and system testing, including individual relai tests, functional evaluations, and differential current calculations. Tap settings and wiring integration were adjusted to accommodate the new relai's configuration and performance standards issued by PT PLN (Persero) UIT JBB. The findings showed that the new relai functioned well in normal operation, block trip, and block all modes. The differential current (Idiff) calculations at Busbar 1 and Busbar 2 yielded 9.32 A and 28.25 A respectively—both well below the 80 A protection threshold, indicating system stability and correct operation. These results confirmed that the upgraded relai system operated within the safe zone and did not trigger false trips. This study highlighted the necessity of modernizing protection systems across substations and recommended further integration with digital communication protocols such as IEC 61850 to enhance future grid reliability and responsiveness.
Solar Tracking System Pada Panel Surya dengan Metode Optimum Tegangan Menggunakan Mikrokontroler Habsari, Kumala Mahda; Arwin, Zawatan; Ningrum, Hanifah Nur Kumala; Prakoso, Dimas Nur
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.7269

Abstract

This study examines the application of a Solar Tracking System on photovoltaic panels using the Optimal Voltage Method controlled by an Arduino Mega 2560 microcontroller. The system is designed to dynamically optimize the panel's position to continuously face the sun, thereby increasing radiation absorption and improving electrical energy conversion efficiency. Testing was conducted by comparing the output voltage of the panel with and without the tracking system. The measurement results showed an average increase of 1.51% in the output voltage when the tracking system was activated. Analysis of solar irradiation data and light intensity further supports the system's effectiveness in maximizing solar energy utilization throughout the day. With the Arduino Mega 2560's ability to process data in real-time and control linear actuators, this system has proven to be effective in enhancing photovoltaic panel performance. This research is expected to lead to significant changes. The innovation made can improve solar energy efficiency, reduce costs, and expand global access to clean energy. Furthermore, this innovation contributes to achieving sustainability goals set by various countries, creating a positive impact on economic growth, job creation, and environmental health. With ongoing technological advancements, the solar tracking system has the potential to play a key role in realizing a more sustainable and environmentally friendly future in the energy sector.
Implementasi CUK Inverting Konverter Pada Battery Charging Terintegrasi Fotovoltaik Berbasis PID Amalia, Rahma Nur; Syamsiana, Ika Noer; Madani, Lingga Ahadian; Widhi, Tri Warisaning
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.7286

Abstract

This study aims to test the performance of PWM, voltage sensors, ACS712 current sensors, and the efficiency of the inverting CUK converter in an energy conversion system. PWM testing showed a stable output frequency of 31.250 Hz across various duty cycles. Voltage sensor testing resulted in an average error of 1.2% for the solar panel sensor and 2.2% for the battery sensor, indicating good accuracy. ACS712 current sensor testing showed an average error of 1.5% at the solar panel input and 9.7% at the converter output to the battery. The inverting CUK converter achieved a maximum efficiency of 89% at a 14% duty cycle. These results indicate that the developed system has high accuracy and efficiency in power conversion. Paying attention to efficiency and accuracy will bring great benefits, such as cost efficiency, system stability, high energy quality. An important contribution of this research is to improve the efficiency and stability of renewable energy systems, especially those integrated with solar panels and batteries, and to support the development of more environmentally friendly and sustainable energy solutions.
Pemodelan Kurva Pembebanan Transformator Distribusi Berdasarkan Variasi Penetrasi PLTS Atap Galuh Prawestri Citra Handani; Rahman Azis Prasojo; Nurfi Fuad Al Azah; Salman Alfarisi; Anang Dasa Novfowan; Afidah Zuroida; Rahma Nur Amalia; Rhezal Agung Ananto; Arinalhaq Fatachul Aziiz
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.7326

Abstract

Transformers are considered important equipment in the power distribution system. Determining the state of the distribution network loading curve a network model to analyze the impact of the rooftop PV system penetration level. The assumption of penetration is 10% - 100% and based on the amount of transformer power according to the nameplate, which is 160 kVA. The transformer that used is GTT BB1215, which is one of the distribution transformers in the PT PLN (Persero) UP3 South Surabaya. The loading curve modeling uses DIgSILENT PowerFactory 2021 software with the Quasi-Dynamic Simulation feature. Based on the average loading curve of GTT BB1215 for 14 days, there is a fluctuation, starting at 00.00 a.m - 06.00 a.m the load will decrease, the load will increase again at 06.00 a.m – 07.00 p.m, and the peak load at 06.00 p.m - 07.00 p.m with a current of 140 A (96 kW) or 60% of the transformer capacity load. The lowest load occurs at 06.00 a.m with a current of 94 A (65 kW) or 40% of the transformer capacity load. At a penetration level of 10% - 40%, the transformer load decreases significantly. However, when the penetration level exceeds 40%, there is a reverse power flow from the rooftop PV system to the transformer. This condition make the current to continue flowing even though the load on the transformer has reached 0, because the current represents the power flow from the rooftop PV system to the network, not from the customer load.
Potensi dan Perbandingan Turbin Crossflow dengan Turbin Kaplan PLTMH Wisata Telaga Muhammad Syafiudin; Resi Dwi Jayanti Kartika Sari; Rahman Arifuddin
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.7221

Abstract

Microhydro power plants present a sustainable energy solution, especially for rural and remote areas like Telaga Jiwa in Sumber Porong Village, Malang. This study aims to evaluate the site's hydro energy potential and determine the most efficient turbine type between Kaplan and Crossflow for application in a small-scale MHP system. Field measurements of water discharge were conducted using the float-area method, while head elevation was obtained through Google Earth data combined with direct site verification. The analysis revealed an average discharge of 0.354 m³/s and an effective head of 9.35 meters, producing a theoretical power output of 24.13 kW. Based on performance analysis, the Kaplan turbine achieved an efficiency of 83%, slightly higher than the 80.5% efficiency of the Crossflow turbine, indicating Kaplan’s suitability for relatively stable flow and medium head conditions. The total system efficiency, accounting for turbine, generator, and transmission losses, reached 72%. This output is sufficient to provide electricity to approximately 86 households with an average daily consumption of 4.7 kWh. The study concludes that implementing an MHP at this location is technically feasible and can contribute significantly to rural electrification, reducing fossil fuel dependency, and supporting national energy resilience. The findings also offer a technical reference for future microhydro development in similar geographic and hydrological conditions.
Proteksi Arus Netral dan Suhu Transformator Berbasis IoT Dampak Beban Tidak Seimbang Pratama, Rafiif Ariesandi Rola; Indhana Sudiharto; Suhariningsih
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.6207

Abstract

Current imbalance results in neutral current and an increase in the temperature of the distribution transformer body. Due to the large number and scattered locations, maintenance of the transformers is carried out at least three times a year. Therefore, the authors developed a laboratory-scale device, which is a miniature neutral current and temperature increase protection system based on the Internet of Things (IoT). The results from the laboratory-scale testing of this protection system will disconnect the load when the current imbalance reaches ≥25% and the body temperature reaches ≥90˚C. Notifications will be sent to Telegram if the load current imbalance is in the range of 10%-14% (sufficient), 15%-24% (insufficient), and ≥25% (poor), and temperatures of 83-84℃ (sufficient), 85-89℃ (insufficient), and ≥90℃ (poor). The miniature protection can disconnect the load when the imbalance value is 25.92% and the temperature reaches 90˚C. Monitoring data is stored in a logger and can be downloaded. Thus, this tool can enhance reliability and help PLN personnel work more effectively.
Sistem Monitoring PLTS pada Miniatur PLTH berbasis Mikrokontroler Permana, Bharata Sena Indra; Aji, Anicetus Damar; Muchlishah; Dezetty Monika
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 2 (2025): ELPOSYS vol. 12 no. 2 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i2.6230

Abstract

This study focused on the development of a monitoring system for a solar power plant within a miniature hybrid power system, utilizing the ESP32 microcontroller. The system was designed to enhance the efficiency and reliability of solar power monitoring by integrating sensors for light intensity, temperature, and humidity. Sensor data were analyzed and displayed in real time through the Blynk application, enabling practical remote monitoring via mobile devices. The results indicated a significant positive correlation between light intensity and temperature with the electrical power output. The system recorded a maximum voltage of 21,42 V, a maximum current of 1,95 A, and a peak power of 27,2 W from a 50 Wp solar panel measuring 40 cm × 62,5 cm × 2,5 cm, under peak light intensity and temperature conditions. Furthermore, the system effectively identified daily patterns in output power variability. In conclusion, the microcontroller-based monitoring system developed in this study offered an efficient and cost-effective solution for solar power plant management, significantly improving data acquisition and system performance monitoring. These findings contributed meaningfully to the advancement of more efficient and reliable photovoltaic (PV) technology.

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