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INDONESIA
Jurnal Teknologi dan Vokasi
Published by Institut Teknologi Padang
ISSN : 29858690     EISSN : 29643694     DOI : https://doi.org/10.21063/jtv
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering
Jurnal Teknologi dan Vokasi (JTV) mengakomodasi pemaparan informasi ilmiah dalam bentuk artikel penelitian, artikel teknis, artikel konseptual, ataupun artikel laporan studi kasus yang sesuai dengan fokus dan ruang lingkup jurnal ini. Ruang lingkup JTV mencakup semua masalah di bidang Teknologi Rekayasa Listrik, Rekayasa Kontruksi Bangunan, dan Teknik Mesin, tapi tidak terbatas pada topik: Sistem tenaga listrik, Mesin-mesin listrik dan sistem konversi energi, Mikrokontroler dan arduino, Teknologi informasi dan sistem kontrol, telekomunikasi, Teknik elektromedik Transportasi Jalan dan Jembatan Manufaktur Material Energi Baru dan Terbarukan Go Green
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 141 Documents
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ENHANCING VOLTAGE STABILITY AND ENERGY OUTPUT OF PLTM SALIDO IN THE PLN DISTRIBUTION NETWORK Bandri, Sepannur; Alfith, Alfith; Indriani, Rani
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.79-86

Abstract

Distributed generation (DG) integration in PLN’s extended distribution network often encounters voltage instability issues due to high voltage drops. These challenges restrict power delivery and can lead to disconnection, particularly during peak load conditions. This study investigates methods to enhance voltage stability and optimize the energy output of PLTM Salido. Using ETAP Power Station software, various operational schemes were simulated to address the problem of low terminal voltage. The study focused on the impact of reactive power injection and governor settings optimization to maintain generator performance under high demand. Results indicate that reactive power injection significantly improves terminal voltage, ensuring continuous power delivery. Adding a third generator unit further increased energy supply capacity, leveraging the full potential of available hydropower. The optimized operation of PLTM Salido with two generators increased daily energy output by 32.2%, while introducing a third generator boosted energy delivery by 107%. This research highlights the critical role of reactive power management and system configuration in enhancing the performance of small-scale hydropower plants in rural distribution networks.
PERANCANGAN SISTEM KENDALI HEXACOPTER MENGGUNAKAN FUZZY LOGIC CONTROL Al, Al; Saputra, Arifwindi; Premadi, Aswir; Effendi, Asnal; Dasman, Dasman
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.87-95

Abstract

The development of hexacopters has progressed significantly in both hardware and software, leading to increased complexity. Despite these advancements, several challenges remain. The nonlinear, multivariable, and dynamic nature of hexacopter systems often results in flight instability, suboptimal precision in movements, and reduced flight duration. To address these issues, this study proposes the implementation of a fuzzy logic control (FLC) system to enhance the performance and stability of hexacopters during flight. The control system aims to minimize rise time, settling time, and overshoot. The research methodology involves developing a mathematical model of the open-loop system using the System Identification Toolbox in MATLAB, optimizing PID values through the PID Tuner, and designing the fuzzy control system based on error and delta error. The open-loop system demonstrates performance metrics of rise time (Tr) 4.60 s, delay time (Td) 2.76 s, peak time (Tp) 6.50 s, settling time (Ts) 5.91 s, and overshoot (Mp) 1.29%. With PID control, the performance improves to rise time (Tr) 3.24 s, delay time (Td) 1.85 s, peak time (Tp) 10.00 s, settling time (Ts) 9.55 s, and overshoot (Mp) 0%. Furthermore, the fuzzy logic controller achieves superior results with rise time (Tr) 3.19 s, delay time (Td) 1.53 s, peak time (Tp) 4.64 s, settling time (Ts) 3.37 s, and overshoot (Mp) 0%.
STUDI GANGGUAN TRANSFORMATOR DISTRIBUSI PADA JARINGAN DISTRIBUSI 20 KV DI PT PLN (PERSERO) RAYON NATAR Khalifah K, Siti; Anasta, Nambi
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.96-100

Abstract

The use of distribution transformers has a very important role in the distribution of electrical energy in a distribution system.  The transformer used must be maintained properly so that its reliability is maintained stable, so as to avoid the form of interference. If a disturbance occurs, it will result in a break in the continuity of electricity distribution to consumers and also losses for consumers and PLN itself. Some disturbances that often occur are due to overloads, unbalanced loads, lightning strikes and internal disturbances in the transformer (disturbances originating from the transformer itself). Through this research, a case study will be taken on the 20 kV distribution network at PT PLN (Persero) Rayon Natar.   Keywords : Distribution System, Transformer, PLN, Rayon Natar
STUDI NUMERIK ALIRAN 3D INTERAKSI AIRFOIL DAN PLAT DATAR Rachman, Arfidian; Yuana Dewi, Arfirta; Effendi, Asnal
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.101-107

Abstract

The effect of secondary flows in the wing-body configuration on aircraft—that is, the presence of wingtip-vortex on the tip region and the creation of multiple elements of the vortex flow on the endwall region—is the basis for studies of the existence of these secondary flow structures. These two factors combined will obstruct the main flow. The presence of this blocking effect will have an impact on the lift and drag aerodynamics, which directly impacts the wing's efficacy and efficiency. The saddle point's position shifting toward the pressure side is a phenomenon that can be seen in the endwall area. On the other hand, the area of maximum pressure on the lower surface travels towards the press side, and the movement of the minimum pressure point on the upper surface is found to be closer to the leading edge based on the isobar contour. The study will be carried out experimentally on a flat plate model with a wing shape change with an angle of attack variation (α) = 0o.
PENGARUH VARIASI CaCo3 TERHADAP ARANG AKTIF PADA PROSES PACK CARBURIZING TERHADAP PENINGKATAN KEKERASAN BAJA KARBON RENDAH DITINJAU DARI STRUKTUR MIKRO DAN KEKERASAN Hafni, Hafni
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.108-115

Abstract

Because of its soft, ductile and easy-to-work nature, steel is widely used as a material in making a product. To obtain hard properties on the surface and remain soft at the core, a surface hardening process is carried out, so that the product can function according to its design objectives. One way to do this surface hardening is with solid carbon media or pack carburizing. To carry out this carburizing process, a furnace is required that is designed to be heat resistant and easy to operate. safe with coal fuel. for the furnace tester that has been designed, testing was carried out on low carbon steel using 1000 grams of activated charcoal carburization media with variations: 200 grams, 100 grams, 66.7 grams of Calcium carbonate (CaCo3) at a heating temperature of 950 0C and a holding time of 4 hours. Then continued with the quenching process. The test results show that the test material with a composition of 1000 grams of activated charcoal with 200 grams of calcium carbonate is better with the addition of carbon elements so that when quenching is carried out, a martensite microstructure is formed.
PENINGKATAN SIFAT GLASS-CERAMICS FLY ASH TERVITRIFIKASI DENGAN PENAMBAHAN 30 WT.% ALUMINIUM SILIKAT DAN PENGATURAN SUHU SINTER Nurzal, Nurzal; Pratiwi, Putri; Handra, Nofriady; Perdana, Mastariyanto; Hafni, Hafni
Jurnal Teknologi dan Vokasi Vol 3 No 1 (2025): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2025.3.1.116-121

Abstract

This study investigates the effects of adding 30 wt.% aluminum silicate and varying sintering temperatures on the density and hardness of vitrified fly ash glass ceramics. Fly ash, a waste by product from coal combustion at the Suralaya thermal power plant has long posed environmental challenges. To mitigate these impacts, this research explores its utilization in producing glass ceramics. The samples were prepared as cylindrical samples with a diameter of 15 mm and thickness of 5 mm, and were fabricated using uniaxial pressing at 120 MPa. The samples were sintered at 1050, 1100, and 1150 °C with a heating rate of 5 °C/min. Experimental results reveal that adding 30 wt.% AS significantly improves the density from 2.31 to 2.51 g/cm³ and hardness from 443 to 2418.55 MPa compared to 100 wt.% fly ash. Optimal density and hardness were achieved at a sintering temperature of 1150 °C.
PENGGUNAAN ABU BATU DAN SPLIT DALAM PEMBUATAN PAVING BLOCK Mulyati, Mulyati
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.1-5

Abstract

This study used stone ash and split as a mixture in the manufacture of paving blocks.  The purpose of this study was to determine the compressive strength and water absorption of paving blocks from the use of stone ash and split.  The mixed ingredients for making paving blocks as a comparison are cement and sand with a composition of 1:8, and the use of cement, stone ash, split with a composition of 1:6:4, 1:8:4, 1:8:8.  Making paving block specimens using a machine with a mold size of 21 cm x 10.5 cm x 6 cm.  Testing of the compressive strength and water absorption of paving blocks was carried out at 28 days of age.  The results of the study used sand and stone ash and split in the manufacture of paving blocks with a ratio of 1:8 and 1:6:4, 1:8:4, 1:8:8, obtained an average compressive strength of 5,.29 and 5.07 MPa, 7.99 MPa, 4.51 MPa respectively, and for water absorption an average of 10,64% and 7.14%, 9.70%, 9.87% respectively. 
KAJIAN KELAYAKAN SISTEM PENTANAHAN PADA TRAVO AUXILIARY CONTROL BUILDING PADA PEMBANGKIT LISTRIK TENAGA AIR (PLTA) SINGKARAK Yan Putra, Dodi; Asrul, Junaidi; Firmansyah, Firmansyah; Roswaldi, Roswaldi; Julsam, Julsam
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.6-11

Abstract

The grounding system at the Singkarak Hydroelectric Power Plant (PLTA) uses the Grid Grounding system. In this study, we re-checked the grounding value at the Travo Auxilary Building control PLTA Singkarang, where the existing results during commissioning during the initial installation of the Travo Auxilary grounding system obtained a value of 1.22 Ohm. While the results of measurements again to carry out the feasibility of the grounding value on the Auxilary building control transformer are obtained the average value of measurements carried out with the ear tester brand Koriyutsu 4106 with a variable auxiliary electrode distance of 5 meters, 10 meters obtained a grounding value on tarvo 1 Auxilary Building 1 of 1.2 Ohm and also on transformer 2 Auxilary building control obtained a grounding value of 1.2 Ohm while the calculation results obtained a grounding value by calculating the Grid method obtained a grounding value of 0.26 Ohm. So from the results of measurements and calculations, a difference of 0.94 Ohm is obtained. From the measurement results and also the calculations, the grounding of the auxiliary building control transformer is still in very proper condition according to SPLN T5.012. year 2020 and PUIL 2011.
PERANCANGAN ALAT MONITORING SISTEM KERJA SOLAR PANEL BERBASIS IoT (INTERNET OF THINGS) Kurnia Putra, Dian; Alfith, Alfith; Shaliha Rosa, Amila
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.12-20

Abstract

Creating a system that can track the position of sunlight to increase the efficiency of receiving light by solar panels, as well as monitor the power generated by solar panels based on the internet of things. The results of this study indicate that increasing solar panel power using a solar tracking system for static solar panels can optimize the output power of solar panels by 27.4%, while increasing solar panel power using a solar tracking system for solar tracking with a fresnel lens can optimize power. solar panel output by 14%.
PENGARUH PENAMBAHAN SERAT KAWAT BENDRAT TERHADAP KUAT TEKAN DAN KUAT TARIK BETON NORMAL A, Arman; Sanjaya, Faldi; Wardi, Syafri
Jurnal Teknologi dan Vokasi Vol 1 No 1 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.1.21-30

Abstract

Along with the progress of the times, technology in the field of building construction has also experienced rapid development, including concrete technology, almost every aspect of human life is always related to concrete. The use of added materials has been widely used in the concrete mix process. Based on this, this study aims to determine the increase in the compressive strength and optimal split tensile strength of concrete with added material of bendrat wire fiber, and the percentage addition of 0%, 4%, 5%, 6%, the tensile strength of concrete is only around 9% - 15 % of compressive strength. The approximation value obtained from repeated testing reaches a strength of 0.50 – 0.60ƒ????′, so for zero-mal concrete a value of 0.57ƒ????′ can be used. The analysis review of this research is the compressive strength and split tensile strength, with a concrete cylinder test object with a diameter of 15 cm and a height of 30 cm. The results obtained from normal concrete with a compressive strength of 9,62 N/mm2, and a compressive strength of 4%, with a result of 13,01 N/mm2, and a compressive strength of 5%, with a result of 12,45 N/mm2, and a compressive strength of 6 %, with a yield of 11,03 N/mm2. The quality of the concrete planned for K 225 which was tested at the age of 3 and 28 days was 48 samples and consisted of 3 variations, each variation of 6 samples. From the research, it was found that the highest compressive strength of concrete at the age of 3 days was 12,45 Mpa with, at the age of 28 days the highest compressive strength of concrete was 22,08 Mpa. The lowest compressive strength value of concrete at the age of 3 days is 9,62 Mpa with the lowest value of concrete compressive strength at the age of 28 days is 14,72 Mpa. It can be concluded in this study that the more wire fibers used, the higher the value of the compressive strength of concrete. From the research, it was found that the highest split tensile strength of concrete at the age of 3 days was 13,01 Mpa with, at the age of 28 days the highest value of the split tensile strength of concrete was 22,08 Mpa. The value of the lowest split tensile strength of concrete at the age of 3 days is 9,62 Mpa with the lowest value of split tensile strength of concrete at the age of 28 days is 14,72 Mpa. It can be concluded in this study that the more wire fibers used, the higher the value of the compressive strength of concrete.

Page 11 of 15 | Total Record : 141

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