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Jurnal JEETech
Published by Universitas Darul Ulum
ISSN : 29647320     EISSN : 27225321     DOI : https://doi.org/10.32492/jeetech.v6i1
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Jurnal JEETech: Journal Of Electrical Engineering And Technology. Electrical Engineering. Journal of Darul Ulum University Jombang in collaboration with the Faculty of Engineering, Darul Ulum University Jombang with the Indonesian Electrical Engineering Higher Education Forum (FORTEI). Region VII. East Java. This journal contains research results in the fields of Power Engineering, Telecommunication Engineering, Computer Engineering, Control and Computer Systems, Electronics, Information Technology, Informatics, Data and Software Engineering, Biomedical Engineering. All submitted articles must report original, previously unpublished, experimental or theoretical research results that are not published and are being considered for publication elsewhere. Submissions must be made online through the JEETech submission site. Published twice a year in May and November p-ISSN: 2964-7320 (Print); e-ISSN: 2722-5321 (Online)
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 102 Documents
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Coordination and Setting of Overcurrent Relays on The PLTMG BMPP Nusantara 1 Generator Ronal Siregar; Marceau Haurissa; Marselin Jamlaay
Jurnal JEETech Vol. 7 No. 1 (2026): In Progress
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v7i1.71001

Abstract

The electrical power system can distribute electrical energy optimally if power plants generate electrical energy with high reliability. However, disturbances in the electrical system can affect reliability. Therefore, safety equipment is necessary. In electrical power systems, protection devices are used to minimize disturbances, and protection relays must function properly. One of the protection devices used in generators is an overcurrent relay. To avoid relay failure, it is important to evaluate the overcurrent relay and test the reliability characteristics of the relay. Based on the overcurrent relay coordination test results, the calculation settings show that the relay is capable of handling maximum and minimum short-circuit currents, but with the existing settings, the relay does not function properly at minimum short-circuit currents. The maximum short-circuit current is 17.185A, and the minimum fault current is 13.828A. Comparing the calculation results with the existing settings, there are differences: for the inverse relay, the primary setting current is 494A and the secondary setting current is 0.988A, while for the definite time relay, the primary current is 3.666A and the secondary current is 7.3A with a relay operating time setting of 0.5 seconds. Meanwhile, the primary setting current value for the definite time relay is 526A and the secondary current is 1.05A, while the primary setting current for the definite time relay is 1.173A and the secondary current is 2.34A with an operating time of 0.6s. In the inverse relay, the calculated setting current value is lower than the existing setting. For the definite-time relay, the test results show a faster operating time and a higher setting current compared to the existing conditions, so the calculated results have the potential to improve the reliability of protection against overcurrent faults. By evaluating existing relay settings against calculated minimum and maximum short circuit currents, this study identifies critical gaps in generator protection. The data suggests that current settings lack the necessary sensitivity for low level fault detection. Consequently, we developed more responsive inverse and definite time relay configurations. This approach enhances the overall dependability of the protection scheme and serves as a vital technical guide for engineers tasked with optimizing overcurrent relay coordination in complex power grids."
Implementation of Tsukamoto Fuzzy Logic in IoT Based Dam Water Level Measuring System Using Nodemcu ESP8266 Sofyan Sofyan; Siti Nur Asia; Muh Imam Quraisy; Irfan Irfan
Jurnal JEETech Vol. 7 No. 1 (2026): In Progress
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v7i1.71002

Abstract

The measurement of dam water level is an important aspect in water resource management and flood risk mitigation. Conventional monitoring systems still have limitations in terms of accuracy, efficiency, and the availability of real-time information. This study aims to implement the Fuzzy Logic Tsukamoto method in an Internet of Things (IoT)-based dam water level measurement system using the ESP8266. The research method employed is a descriptive method, which includes system design, water level sensor data collection, data processing using the fuzzy method, and system testing. In this study, the fuzzy input variable is the water level with linguistic sets of low, medium, and high, while the output variable is the dam status with the sets of safe, alert, and danger. Based on the test results, at a water level value of 40 cm, the membership degrees obtained were μ_low = 0.3, μ_medium = 1.00, and μ_high = 0.22. The fuzzy inference process produced a crisp output value using the Tsukamoto defuzzification method of 87.45, which is categorized as an alert condition. The test results indicate that the system is capable of processing sensor data accurately and providing real-time information on water level conditions through the internet network. Therefore, the implementation of Fuzzy Logic Tsukamoto in an IoT-based system using ESP8266 can be an effective and reliable solution for monitoring dam water levels and supporting fast and accurate decision-making.

Page 11 of 11 | Total Record : 102

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