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All Journal Britain International of Exact Sciences Journal (BIoEx Journal) Cendikia : Media Jurnal Ilmiah Pendidikan
Agus Junaidi
Universitas Negeri Medan, Indonesia
Biochemistry, Genetics & Molecular Biology Chemistry Education Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Physics Other

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Modeling and Analysis of Asymmetrical Faults for Relay Settings in Electric Power Protection System Learning Abd. Hakim Butar-Butar; Agus Junaidi; Marwan Afandi; Sempurna Perangin-Angin; Rahmaniar
Britain International of Exact Sciences (BIoEx) Journal Vol 4 No 3 (2022): Britain International of Exact Sciences Journal, September
Publisher : Britain International for Academic Research (BIAR) Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/bioex.v4i3.757

Abstract

This study examines the analysis of Asymmetrical fault, namely single-phase ground faults for e-jobsheet products based on Information and Communication Technology (ICT) or utilizing computer programs for study. A study of short-circuit faults in the electric power system, is used to solve problems in the field of reliability and protection. the electric power system, namely the handling of single-phase short-circuit faults to ground which, if not neutralized, cause equipment damage to the electric power system. Parameters from modeling and analysis of asymmetrical faults are used for setting the Ground Fault Relay or often known as the Ground Fault Relay (GFR). The research study begins with modeling the interconnection system in the form of a reactance diagram, then modeling it with the bus impedance matrix equation, to determine the magnitude of the short circuit impedance value on the diagonal matrix. Then calculate the fault current of a single-phase short circuit to ground. From these results it is determined to determine the amount of the relay setting. The results showed that the asymmetrical fault current was 3.0 Pu with a setting time value of 2,45 seconds. The results of the study are used for learning relay settings. The simulation program was validated by experts, with a very good category with an Aikensv index of 0.872.
Systematic review of literature: Advantages and challenges in implementing the Project-Based Learning (PjBL) Wita Ferwati; Agus Junaidi; Efendi Napitupulu; Abdul Hamid
Cendikia : Media Jurnal Ilmiah Pendidikan Vol 14 No 2 (2023): November: Education Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/cendikia.v14i2.4453

Abstract

This research aims to explore the advantages and challenges of the Project Based Learning (PJBL) learning model in developing higher-order thinking skills among students. This research uses the Systematic Literature Review (SLR) method. This research analyzes search results originating from the Scopus, Erics, and Google Scholar databases, spanning the last 10 years. The limitation of this research is that the articles used consist of a period of 10 years. It is hoped that in future research the data can be further improved. Based on the article data that was searched, 10 articles were taken which were used as study material. The results of the analysis of the review of this article can draw conclusions and findings that the learning model (PjBL) has the following advantages: 1) can increase student motivation and involvement in the learning process, 2) develop real skills, 3) increase learning outcomes and collaboration and communication skills, critical thinking, and creative thinking; 4) active and student-centered learning. Meanwhile, the weaknesses of the Project Learning Model (PJBL) are: 1) implementing PjBL the teacher must prepare a project that will be used in learning so it requires a lot of time; 2) This PjBL requires complete facilities to be implemented well so several schools have limited resources; 3) in implementing PjBL, it is difficult to involve all students in group work because not all students are active; 4) the costs of implementing PjBL require a lot of money so the use of this PjBL learning model needs to be considered.
Co-Authors Abd. Hakim Butar-Butar Abdul Hamid Efendi Napitupulu Marwan Afandi Rahmaniar Sempurna Perangin-Angin Wita Ferwati