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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Teknologi
M. Fitra Waldi
Universitas Malikussaleh
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering

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Prototype of Detector for Metal Content in Packaged Drinks Using Salinity Sensor Based on Arduino Uno Mauliddin Mauliddin; Muhammad Daud; Teuku Multazam; Ainal Mardhiah; M. Fitra Waldi
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8891

Abstract

This research aims to design and build a prototype device for detecting iron (Fe) and manganese (Mn) metals in packaged drinks using a salinity sensor processed using the Kalman filter method. Packaged drinks are a popular choice due to their convenience and variety of flavors, but their metal content needs to be monitored to prevent health risks. This system was designed using an Arduino Uno microcontroller as the main controller, with a salinity sensor to detect Fe and Mn levels, and an LCD as the data display. Testing was conducted by comparing the device's detection results with laboratory data obtained from the Banda Aceh Industrial Standardization and Services Center. The results showed that the device was able to detect Fe with an accuracy of 98.48% and Mn with an accuracy of 100%. The average measurement error for Fe was 1.52%, while for Mn, the error was 0%. These results demonstrate that the designed device functions well and has high accuracy, thus potentially being used as an independent test tool for the suitability of packaged drinks.
Evaluation of Staged Under Frequency Load Shedding Strategy for Generator Trip Events at Arun Substation Using DIgSILENT Powerfactory M. FITRA WALDI; MUHAMMAD DAUD; SELAMAT MELIALA; SALAHUDDIN SALAHUDDIN; TEUKU MULTAZAM
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 2: Published April 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i2.231

Abstract

Frequency stability is a key indicator of power system reliability, as disturbances such as generation loss can cause rapid frequency decline and potentially lead to a blackout. This study evaluates the effectiveness of a load shedding scheme using an Under Frequency Relay (UFR) at the Arun Substation through dynamic simulation in DIgSILENT PowerFactory. The scenario involves a sudden loss of generation, comparing conditions without and with UFR. Results show that without UFR, a 48.421 MW power loss causes the frequency to drop below 42 Hz in less than 16 seconds, leading to system failure. With a two-stage UFR scheme (27.6 MW at 49.5 Hz and 28.4 MW at 49.2 Hz), the frequency decline is arrested and the system stabilizes at 50.12 Hz within about 3 seconds. Thus, the UFR scheme is effective in maintaining system stability.
Co-Authors Ainal Mardhiah Mauliddin Mauliddin Muhammad Daud Salahuddin Salahuddin Selamat Meliala Teuku Multazam