Jurnal Pendidikan Teknologi dan Kejuruan
Aims and scope: Aims Jurnal Pendidikan Teknologi Kejuruan aims to present high-quality and relevant scientific articles in the form of original research results in the field of Technical and Vocational Education and Training. By showcasing the latest teaching techniques, effective instructional methods, and recent advancements in relevant technologies, this journal provides a significant contribution to the enhancement of superior vocational education and engineering development. The journal strives to become a reliable reference source for researchers, academics, and practitioners worldwide. All articles published undergo a rigorous process of selection and peer review, ensuring that the information presented in this journal maintains a high level of credibility. Scope The scope of research in the field of Technical and Vocational Education and Training (TVET) encompasses a wide range of topics related to the education and training provided for various technical and vocational skills. This field involves the study and improvement of educational programs, training methodologies, and strategies that prepare individuals for specific careers and industries. The scope of TVET research includes, but is not limited to, the following areas: Curriculum Development: Research focuses on designing and updating curricula that align with industry needs, technological advancements, and job market demands. Teaching and Learning Methods: Studies explore effective pedagogical approaches, instructional techniques, and innovative technologies that enhance the teaching and learning experience in vocational settings. Technology Media: Leveraging these technology media resources can enhance the vocational education experience by providing diverse learning materials, facilitating collaboration, and keeping learners informed about the latest developments in their chosen field. (Online Courses and Platforms, YouTube Channels and Tutorials, Podcasts, Tech Blogs and Websites, Interactive Learning Platforms, Educational Apps, Virtual Reality (VR) and Augmented Reality (AR), Webinars and Online Events, Social Media Communities, and E-books and Digital Publications) Workforce Development: Research examines strategies to bridge the gap between education and the workforce, ensuring graduates possess the skills and competencies required by industries. Skill Assessment and Certification: Investigations into valid and reliable methods for assessing vocational skills, as well as the development of certification standards that validate individuals' proficiency. Industry-University Collaboration: Studies analyze partnerships between educational institutions and industries to ensure that educational programs remain up-to-date and relevant. Apprenticeships and Internships: Research into structured on-the-job training experiences that allow students to acquire practical skills and experience real work environments. Lifelong Learning and Continuing Education: Exploration of strategies for ongoing skills development and training for individuals to adapt to changing job market requirements. Gender Equality and Inclusivity: Investigations into promoting gender-balanced participation and inclusivity in traditionally male-dominated vocational fields. Technological Advancements: Research on the integration of emerging technologies, such as digital tools and Industry 4.0 concepts, into vocational training programs. Quality Assurance: Studies on mechanisms to ensure the quality of vocational education and training programs, including accreditation and evaluation processes. Policy and Governance: Examination of policies and regulations that shape TVET systems and their effectiveness in promoting skill development and employability. Socio Economic Impact: Research into the influence of TVET on economic growth, social mobility, and addressing unemployment challenges. Engineering (miscellaneous) encompasses a diverse range of topics that contribute to the advancement and application of engineering principles across various disciplines, providing valuable learning opportunities in vocational education. Overall, research in the field of TVET contributes to improving the quality and relevance of vocational education, addressing skills gaps, and fostering the successful transition of individuals into the workforce, thereby promoting economic development and societal well-being.
Articles
358 Documents
Harmonic distortion characteristics generated by heating ventilation air conditioning system case study in PCR Laboratory
Setyadi, Reza Andika;
Setiabudy, Rudy
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i1.31323
Good power quality is required in health facilities since the increasing use of microprocessor-based equipment. Poor power quality in the electric power system can cause medical equipment in health care centers to malfunction and give incorrect medical diagnoses. Since 2020 we are facing a new type of Virus (Covid-19), this virus requires special laboratory construction with specific air conditioning systems (temperature, humidity, and pressure) to process specimens. This paper presents measurement results of harmonic distortion characteristic by Variable Frequency Drive (VFD) of Heating Ventilation Air Conditioning (HVAC) system in PCR Laboratory at Clinic A. The VFD in this system is used to adjust the rotation of the exhaust fan and outdoor unit. The measured voltage, current and power are used to assess power quality. The main power quality problems found in medical facilities are voltage flicker, neutral currents, and total harmonic distortion (THD) values. The measurement of total harmonic distortion (THD) is used to find the source of the harmonics. Potential problems can be identified within the facility. The results of this study can be used to develop, test, and validate the system that has been used.
Evaluation of microstructure high chrome austenitic stainless-steel grade 253MA after creep test at temperature of 700°C
Alviana, Rifda Muthia;
Anwar, M Syaiful;
Siradj, Eddy S
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i1.31523
High Chrome Austenitic Stainless-Steel grade 253 MA is a material that widely used for high temperature. This is due the fact this material has excellent mechanical properties and creep resistance. However, changes in microstructure can occur in long-term use, which will affect the creep resistance (shortened service life of the material). The microstructure of High Chrome Austenitic Stainless-Steel 253 MA creep test specimens was investigated. Creep testing at a temperature of 700 °C with a loading of 150 MPa was carried out. The cold rolling process with 53% reduction in thickness was applied followed by annealing at 900°C, 1000°C, and 1100°C for 3600s to obtain different grain size. Grain size after annealing and after creep test was measured to see the effect of annealing temperature on the grain size of tested steel and to see its effect on creep resistance based on the creep test conducted. Grain size and morphology of the phase after creep test were observed by scanning electron microscope and optical microscope
Design analysis configuration and capacity of off-grid with implementation of photovoltaic (PV) and battery energy storage system (BESS) as power supply for shipping activities at ports
Mutiah, Fiqi;
Sudiarto, Budi
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i1.31623
The government of Indonesia developing mitigation for climate change and achieving decarbonization in the sea transportation sector by encouraging increased use of onshore power supply for ships when berthing at ports. Off-Grid is one of the green transition technologies that provide great benefits to ports for the mitigation of environmental. To ensure optimal system operation, determining the proper configuration and component sizes is an important decision at the design stage. One of the important activities at the port is the transportation of mining products, B3 waste, and others by using ships operated with diesel engines which are known to be expensive and not environmentally friendly. The configuration consists of a photovoltaic system and an energy storage system as well as land electricity support at the port then optimized by considering solar radiation, temperature, and data component specifications to supply power to the ship so that do not use diesel generators on board. From the calculation results it is known that when the ship is anchored it requires 3,310.34 kWh/day of electrical energy. To meet electricity needs, 3,200 units of PV modules are designed with a power output of 1,216 kW peak and a BESS capacity of 4,064 kWh.
Batang bayang river flood modeling based on rain return period
Mardizal, Jonni;
Arbi, Yaumal;
Akmal, Ikhsanul
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i1.31723
West Pasaman Regency is one of the regencies in West Sumatra that experiences flooding the most. In 2020, in April and September, floods occurred in the West Pasaman district, more precisely around the Nagari Ujung Gading area, Lembah Melintang District. Floods most often inundate the Jorong Lombok and Jorong Irian areas. The flood that occurred was caused by the overflow of the Batang Bayang river. Puddles of water inundated at least 150 residents' houses until the water level reached a height of 1 meter. The problem of flooding almost every year is felt by residents who live near the location of the Batang Bayang river. This study aims to determine the flood discharge of the Batang Bayang river with return periods of 2, 5, 10 and 25 years. Then this study also aims to determine the ability of the Bayang Bayang River to flow flood discharge for 2, 5, 10 and 25 years return periods. The results show that the 2-year return period produces a maximum flood discharge of 47.2 m/s3. In the 5-year return period it produces a flood discharge of 110 m/s3, in the 10-year return period it produces a flood discharge of 143.6 m/s3 and at the return period of 25 years resulted in a flood discharge of 189.2 m3/s. The cross section modeling in the 2 year return period resulted in a water elevation of 21.07 meters. The 5-year return period modeling results in a water level elevation of 22.4 meters. The 10-year return period models the water at an elevation of 23.01 meters and the 25-year return period produces a water level of 23.72 meters.
Analysis of production and potential utilization as electricity methane gas air dingin landfill
Pratama, Dedy Aulya;
Raharjo, Slamet;
Aziz, Rizki
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i1.31823
This study intends to analyze methane gas emissions resulting in landfill procedures. The magnitude of the impact of methane gas emissions on global warming from the waste sector, it is necessary to calculate the potential amount of methane gas emissions of Padang city waste in the Air Dingin Landfill so that it can be used for new energy potential as an alternative energy to replace fossil fuels no longer as a contributor to global warming. In this study, the methodology contains systematic steps in researching to achieve research objectives, namely conducting preliminary studies and literature studies, formulating problems, and setting research objectives as well as how to collect and obtain research data. The result of this study is that the Air DIngin Landfill in Padang City is still processing open dumping, with land that has been operated around 50% of the existing land area. The high operational costs are one of the reasons the sanitary landfill system cannot be done by the Padang City Government. Methane gas produced from 2020 - 2031 in the Air Dingin Landfill is produced from scenario 1 (waste directly landfilled) which is 43,289 gigagrams of CH4 or 43,289 tons of CH4 emissions. CH4 emission scenario 2 (waste reduction by waste pickers in landfill) produced 43,267 gigagrams or 43,267 tons of CH4. CH4 emission scenario 3 (Reduction of waste at source, in the region, and in landfill) produced 40,944 gigagrams CH 4 or 40,944 tons of CH4. After converting methane gas into electrical energy, the potential electricity in scenario 1 is 84.15 megawatts, scenario 2 is 84.10 megawatts and scenario 3 is 79.59 megawatts in 2031.
Optimization and short-circuit analysis of photovoltaic penetration in off-grid system – A case study in newmont suriname gold mine
Agustinus, Alpha;
Sudiarto, Budi
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i2.32023
Mining companies are highly dependent on fossil fuels to meet their electricity needs and mining activities such as the use of heavy equipment. Therefore, the greenhouse gas emissions due to burning of fossil fuels have become a major issue related to the impact on the environment due to mining activities. Renewable energy such as Photovoltaic (PV) can be an alternative solution to overcome this problem. This study aims to examine the optimal penetration of Photovoltaic (PV) at Processing Plant Newmont Suriname gold mine. HOMER software is used to design the most optimal Photovoltaic (PV) penetration. ETAP software is used for technical validation through load flow and short-circuit analysis.
Economic analysis of variable speed drive control through profinet technology on distributed control system: A case study in essential oil processing factories
Alim, Adhipa Tri Setyawan;
Sudiarto, Budi
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i2.32123
Electrical equipment in essential oil processing plants is generally dominated by electric motor loads. In today's digital era, global competition and technological advances encourage factories to increase the efficiency and reliability of their production equipment. One way of efficiency is to use a variable speed drive (VSD). The existence of Profinet technology as a network protocol between the control equipment and the VSD allows users to increase system reliability while increasing energy use efficiency. Even so, there are still many factories that are hesitant to use this technology in their automation systems. Many low to medium-sized factories still use traditional control methods such as hardwired. This method is considered more reliable, and inexpensive compared to using Profinet technology. Cost-benefit analysis is carried out to prove this paradigm. At the same time provides certainty that the investment costs incurred in building the system provide added value for production equipment. From this research, it is proven that the use of Profinet technology in addition to providing savings on investment costs also provides benefits from a technical perspective. This technology also allows the implementation of condition-based monitoring systems for electric motors in production equipment. Which in turn can increase the performance and service life of the machine.
Stakeholder opinions of the student’s abilities during the research internship program
Romadhoni, Ita Fatkhur;
Susila, I Wayan;
Rijanto, Tri;
Miranti, Mauren;
Megasari, Dindy Sinta
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i2.32223
Recently, there has been a gap between the skills needed by industry and learning materials in schools that still need to meet expectations. Research internship programs (RIP) viewing as a link that can eliminate these disparities. However, there is no conclusive proof of the learning results of the program. This study seeks to dig deeper into information based on a stakeholder's point of view on the quality of skills demonstrated by students in research internship programs. This research is qualitative. The case study method approach analyzes phenomena in the workplace according to assessment reporting in terms of stakeholder perceptions. Research informants consist of primary, supporting, and critical stakeholders. This paper uses triangulation techniques to reduce data, present data, and draw conclusions. The results of this study indicate that students' readiness and skills affect hard-skill performance but do not significantly affect the results of the research conducted. Stakeholder perception states that schools need more time to be ready to implement research internships based on Ministerial Decree Number 123/M/KPT/2019.
Testing of palm oil-based electric power transformer insulation oil as a renewable energy source
Hendri, Hendri;
Arief, Yanuar Zulardiansyah;
Syukur, Abdul
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v6i1.32323
Reducing petroleum resources and environmental problems, alternative insulating oils with biodegradable characteristics have become an alternative. Esterification of palm-based oil is expected to provide better and optimum electrical properties. The esterification of palm oil will be carried out as a test sample and observed for its electrical, physical and chemical properties such as PD characteristics, breakdown voltage, dissipation factor, viscosity, flash point, etc. The effect of thermal aging on oil samples will also be carried out to simulate real situations in power transformer applications. Then after obtaining the best formulation from the sample it will be used as insulating oil in electric power transformers (100kVA). The purpose of this research is to apply esterified palm oil as an electric power transformer oil. The method used in this research includes field research. Field research includes taking oil samples, measuring the breakdown voltage of transformer oil, and the color of transformer oil. The results obtained are insulating oil for electric power transformers based on palm oil. Palm oil has the advantage of being an environmentally friendly, biodegradable and renewable oil compared to the transformer oil used today which is based on petroleum. With the realization of transformer oil based on palm oil, it is hoped that it can provide great economic opportunities for Indonesia as one of the largest palm oil producers in the world and can also provide added value and increase the competitiveness of the palm oil industry in the future.
Suitcase security system using Android and GPS
Hendri, Hendri;
Rosyinta, Rosyinta
Jurnal Pendidikan Teknologi Kejuruan Vol 5 No 4 (2022): Regular Issue
Publisher : Universitas Negeri Padang
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DOI: 10.24036/jptk.v5i4.32423
Technological progress is something that cannot be avoided in line with the development of science. Technology provides many benefits because technology is present to facilitate human work. One of the technological advances is the presence of airplanes. To go wherever humans are not restricted by distance and time. Generally, people will use a suitcase to store their luggage when they travel because it is easier to carry. But the theft of items in the suitcase is rampant. For this reason, a security system can be made that can inform the owner that the suitcase has been forcibly opened. The PIR sensor installed in the suitcase will detect if there is movement and temperature of the human body heat in the suitcase. Then GSM SIM900A will send a notification to the owner and the buzzer will sound. If the suitcase has been stolen and taken away then we can see the location of the suitcase in the application that has been made with coordinates obtained from the GPS module installed in the suitcase. In addition, we can activate or deactivate the sensor through an application that has been made with the aim that when the owner opens the suitcase there will be no notification that the suitcase has been forced open and the buzzer will not ring.