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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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ANALISIS PUSAT LISTRIK MINIHIRO (PLTM) STUDI KASUS : SALIDO KECIL PESISIR SELATAN SUMATERA BARAT Indriani, Rani; Alfith, Alfith
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.39-46

Abstract

In this research, we used a variety of methods that can be applied to the PLTM Salido to address the very low voltage terminal problem of the generator. This is especially true in situations where peak loads occur, which requires these plants to be removed from the system. The power flow analysis is performed using the ETAP Power Station program to simulate the search for operating schemes that can fix the situation. The results of the analysis show that through the injection of reactive power from the generator to the PLN network and the optimization of the governor settings, PLTM Salido can generate more energy by supplying power to PLN networks, even under peak load conditions. This allows PLTM Salido to increase the amount of energy sent from the power plant to the South Coast distribution network. After optimization, the value increased to 14.06 MWh per day from the previous 10.64 MWh By adding one more power plant unit, the energy supply of the PLTM salido could increase to 22 MWh a day.
ANALISIS ARUS HUBUNG SINGKAT DI PT PLN NUSANTARA POWER UP GRESIK PADA MOTOR BOILER FEED PUMP Harista Rahman, Alvin; Budiyanto, Maun
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.78-84

Abstract

Reliability is the main characteristic that must be maintained in power generation units in line with the increase in electricity consumption in Indonesia. If this reliability cannot be maintained, it will damage the generating equipment and disrupt the distribution of electricity supply to the loads. Failure in the reliability of the power generation unit can be caused by short circuit fault current conditions. In this study, an analysis was carried out regarding the condition of the short circuit current in the electricity network at the load of the 4A boiler feed pump (BFP) motor PT PLN Nusantara Power UP Gresik. Analysis was carried out to determine the maximum and minimum short circuit current conditions using ETAP 12.6 software. There are two bus bars that are used as simulation objects when experiencing disturbances, namely the 15 kV busbar and the 4.16 kV M/C switchgear busbar. The simulation results obtained are the maximum and minimum short circuit values. The maximum value is obtained from transient conditions in the form of a three-phase fault and one phase to ground. While the minimum value is obtained from the steady state condition in the form of an inter-phase fault current.    
ANALISIS PEMODELAN PRILAKU STABILITAS LERENG DENGAN MENGGUNAKAN APLIKASI GEOSLOPE Nofrizal, Nofrizal; Farhan, Muhammad
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.47-55

Abstract

Sitinjau Laut is an area of ​​Bukit Barisan rock which is dominated by the weathering of volcanic rocks in the form of clay, sandy clay with pebble-sized rocks to large chunks of clay and sandy clay which are very plastic, if exposed to water on the cliffs it will easily trigger ground movement (Ade Edwar, 2022). In 2019, natural disasters frequently occurred on the Sitinjau Laut km 23 road section. Landslides occurred due to high rainfall and steep cliff structures and made the road impassable (DIBI, 2019). The Sitinjau Laut road is an important means of transportation in the city of Padang. The impact of the landslide that occurred on the Sitinjau Laut road section resulted in disruption of traffic flow on the road. The aim of this research is to determine the value of the safety factor (Factor of Safety) of the slope of the research location using the Geo - Slope/W 2012 program. W 2012 is 0.581. From the results obtained it can be said that the slopes of the research area are unsafe because the Factor of Safety (FoS) value is less than 1. Simulations using several angle variations of 30 ̊, 45 ̊, 60 ̊ and 90 ̊ obtained the minimum and maximum Factor of Safety (FoS) values.) is less than 1. Thus, slope stability using several angle variations is unsafe.
ANALISA KEBUTUHAN MATERIAL DAN RANTAI PADA PROSES PRODUKSI MESIN TEKUK PLAT HIDROLIK Eka Putra, Ismet; Wardianto, Dedi; Juliantoni, Juliantoni
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.56-68

Abstract

A plate bending machine or what is called a bending machine, is the process of forming sheet metal (plate) so that it conforms to the planned shape and size. This research applies hydraulic technology to the plate forming and bending process. This bending machine applies a clamping mechanism to the plate and applies a load using hydraulic power to bend the plate. In making this bending machine, it is necessary to analyze the material requirements and the production process chain for an effective hydraulic plate bending machine. Making a hydraulic plate bending machine is divided into several steps that must be carried out and prepared first, namely: Identifying work drawings, planning material selection, preparing materials, preparing tools and machines, carrying out work and finishing processes. The materials used to make components of the hydraulic plate bending machine are 0.6 mm thick ST37 plate with components in the form of clamp parts measuring 1400mm X 196mm 250mm x 95mm, Frame part measuring 1000mm x 600mm. The transmission system used is a hydraulic system to push the bending part. Then, to lift the plate clamp part, use the lever system on the left and right of the hydraulic plate bending machine. The machines and equipment used in making hydraulic plate bending machines are measuring equipment, volume reduction equipment, welding equipment, assembly equipment and finishing equipment.
PERFORMANSI ALAT PENGASAPAN IKAN DENGAN SISTEM ROTARI HORIZONTAL Perdana, Mastariyanto; Hafni, Hafni; Yulianti, Lusi; Romi, Romi; Alfith, Alfith; Pratiwi, Putri; Nurzal, Nurzal
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.69-77

Abstract

One of the fish preservation techniques that are widely used today is the smoking technique. In general, the smoking process was still traditional and used a conventional oven. This method is an easy way to smoke fish. The purpose of this study was to determine the efficiency of the fish smoking device using a horizontal rotary system. This smoking device consists of a smoking chamber, a furnace, a rotary catfish holder, a DC motor, gears, and a chain. The capacity of this rotary system smoker is 9 kg of wet fish. The fish used in this study were catfish and skipjack fish. This smoking uses the result of burning cinnamon. Cinnamon will produce smoke which is useful for smoking fish. The weight of wet fish in one smoke in this study was 8 kg. The smoking method has a standard ratio of wet fish weight to dry fish weight of 4: 1. For smoking catfish, after smoking for 2 hours at a temperature of 80 oC - 90 oC, the weight of catfish becomes 2 kg. For smoking skipjack tuna, after smoking for 2.5 hours at a temperature of 80 oC - 90 oC, the weight of skipjack tuna becomes 2 Kg. From the test results, it can be concluded that the rotary smoking system is very good for use as a fish smoking tool because it has a high enough efficiency compared to traditional tools such as ovens where the traditional smoking method takes 36 hours and the oven system smoking method takes as long as 12 hours.
PENGGUNAAN PASIR SILIKA SEBAGAI BAHAN PEMBUATAN PAVING BLOCK Mulyati, Mulyati; Fakhri Jovari, Ibrahim
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.85-91

Abstract

This research uses silica sand as a material for making paving blocks.  The aim of this research is to determine the compressive strength and water absorption values of paving blocks from the use of silica sand as a partial replacement for sand in making paving blocks.  The mixture for making paving blocks uses a ratio of 1 part cement and 3-part sand, with variations in the use of silica sand being 0%, 5%, 10%, 15%, and 20%.  Making paving block test specimen was done manually with a mold size of 21 cm x 10.5 cm x 6 cm.  Tests for compressive strength and water absorption of paving blocks were carried out at the age of 28 days.  The results of research on making paving block test specimens using sand obtained an average compressive strength of 8.81 MPa and an average water absorption of 15%, using 5%, 10%, 15% and 20% silica sand were obtained, the average compressive strength is 9.56 MPa, 11 MPa, 13.5 MPa, 14.93 MPa, and the average water absorption is 13%, 10.1%,9.5%, 9.2% respectively.  Thus, using silica sand as a substitute for sand in making paving blocks can increase the compressive strength and reduce the water absorption of paving block.
EXPERIMENTAL ANALYSIS OF HEAT RECOVERY WHEEL FOR TROPICAL CLIMATE Rachman, Arfidian; Yuana Dewi Rachman, Arfita; Effendi, Asnal; Nesti, Lisa
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.92-96

Abstract

This paper presented and used experimental analysis to examine design that integrates an active heat recovery wheel mechanism into a windcatcher. A rotational thermal heat recovery is incorporated into the windcatcher channel of the proposed system. An experiment was conducted to examine how the heat recovery mechanism affected the windcatcher performance, demonstrating the system ability to provide the necessary fresh air rates. A test room model, measuring 4x4x3 meters and depicting a small classroom, was integrated with the windcatcher model. Ventilation rates managed to supply sufficient ventilation even with the rotational heat recovery wheel blocked. This active recovery has the potential to lessen the demand on space heating systems in addition to providing enough ventilation. The heat in the exhaust airstreams was caught and transferred to the incoming airstream, boosting the temperature between 7-9oC depending on the indoor/outdoor conditions. This indicates that there is a great deal of room for further development of the idea, allowing for larger-scale testing and investigation of the system's heat transfer characteristics.
PENINGKATAN AKURASI PENGAMBILAN FOTOGRAMETRI DENGAN JALUR TERBANG AUTOPILOT HEXACOPTER Al, Al; Fajrin, Fajrin; Karim, Abdul
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.97-104

Abstract

The utilization of Hexacopters represents a method for large-scale mapping that is faster and more efficient, allowing for time savings compared to conventional survey methods. With GPS/GLONAS support, mapping data collection becomes easier and safer, facilitated through the design of flight paths using compatible software. The real-world flight safety of Hexacopters is crucial, especially in close encounters with other aircraft. In photogrammetry tasks, careful flight path planning is necessary to ensure high-quality photo outcomes. Designing flight paths using autopilot and adjusting the aircraft's speed control parameters are essential for facilitating identification and obtaining more accurate data. This approach aims to achieve stability and efficiency in photogrammetry flight missions.To evaluate the accuracy of the Hexacopter imaging mapping system, flights are conducted independently with an RGB camera flown at the testing location. Flight missions and data acquisition are meticulously planned in the laboratory, covering the area of interest (AOI), Ground Sampling Distance (GSD), and understanding the intrinsic parameters of the installed digital camera. By setting the image scale, camera focal length, and flight height, the nadir perspective of the camera is calculated to rectify overlapping longitudinal and transversal lines. The presence of GNSS/IMU is typically utilized to guide image acquisition. Test results indicate that the Ground Sampling Distance for each flight is below 1 cm/pixel.
PELACAKAN TITIK DAYA MAKSIMUM PHOTOVOLTAIC DC-DC BOOST CONVERTER DENGAN ALGORITMA P&O Matalata, Hendi; Wustha Johar, Leily; Eka Yandra, Fadli
Jurnal Teknologi dan Vokasi Vol 2 No 1 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.1.105-115

Abstract

Photovoltaic (PV) is an environmentally friendly renewable energy source. When Photovoltaics are connected directly to a load, the power delivered to the load is not optimal power. Therefore, it is important to get maximum power from the PV system thereby increasing efficiency. Various maximum power point tracking (MPPT) techniques of PV systems are proposed, such as Perturb and Observe (P&O) algorithm. MPPT techniques are usually limited to uniform weather conditions. This research presents an MPPT system with a series of DC-DC Boost converters under conditions of changes in solar irradiation, each change is assumed to last 5 hours and a temperature of around 250C, while the amount of solar irradiation is 300 W/m2, 500 W/m2, 700 W/m2 and 1000 W/m2. From the results of research carried out with the help of MATLAB simulations, it was found that the average efficiency was 95.6% and obtained low oscillation MPP tracking as well as fast and dynamic response during stable weather conditions.
EVALUASI KEBUTUHAN JARINGAN IRIGASI (STUDI KASUS DAERAH IRIGASI BATANG ANAI) SUB-DI LUBUK ALUNG MENGGUNAKAN PROGRAM CROPWAT 8.0 DAN HEC-RAS 5.0.1 Afandi, Ahmad; Nofrizal, Nofrizal; Yulan Nifen , Silta; Agus, Agus
Jurnal Teknologi dan Vokasi Vol 2 No 2 (2024): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2024.2.2.1-12

Abstract

The Lubuk Alung Irrigation Area is a grouping of the large Batang Anai Irrigation Area, generally most of the population are farmers, so the need for water for agricultural land is very necessary, if there is a lack of water supply for irrigation it can hamper the pace of the planting season. The aim of this research is to calculate the need for irrigation water in rice fields and plantations in the Lubuk Alung irrigation area and determine the exiting dimension. Calculation of irrigation water requirements using the KP-01 method and Cropwat 8.0 software, to find the exiting dimensions using HEC-RAS 5.0.1 software. From the results of calculating irrigation water requirements using the KP-01 method, the value was 1.42 l/sec/ha in April and the results of calculating irrigation water requirements using the Cropwat 8.0 program obtained a value of 0.36 l/sec/ha in March. . In the cross section calculation using HEC-RAS 5.0.1 software, the discharge used is in the primary channel BLS.1-BLS.2, namely 21,566 m3//s with data on the dimensions of the upstream channel (P0) with channel width (b) = 11 m , channel height H = 2.87 m and downstream channel height (P16) (H) = 3.14 m, from the results of running with HEC-RAS 5.0.1 software it is found that the water level upstream is (P0) (h) = 1.2 m and the water level downstream (P16) (h) = 1.13 m, while from field survey data it was found that the water level upstream (P0) (h) = 1.23 m and downstream (P16) (h) = 1.15 m. From the results seen in the cross section image, it can be concluded that the channel dimensions are not the same height. In overcoming this problem, an attempt was made to recreate an efficient channel cross-section design. The results obtained from exiting channel dimensions with channel bottom width (b) = 8 m, channel top width (B) = 17.76 m, water level height (h) = 1.56 m, channel height (H) = 2.44 m , and guard height (w) = 0.88 m.

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