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All Journal Journal Electric Field
Adi Mulyadi
Program Studi Teknik Elektro, Fakultas Teknik, Universitas PGRI Banyuwangi, 68416, Indonesia
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Rancang Bangun Sistem Monitoring PLTS Off-Grid Pada Mobile Tower Berbasis Internet of Things Trisuyono Suparmin; Adi Mulyadi; Widhi Winata Sakti
Journal Electric Field Vol. 3 No. 1 (2026): Journal Electric Field
Publisher : CV. Sekawan Siji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63440/jef.v3i1.126

Abstract

This research developed and tested an Internet-of-Things-based off-grid solar power plant monitoring system on mobile towers using the Telegram platform as the monitoring medium. The objective of this research was to create an efficient and real-time mobile tower performance monitoring system based on temperature, current, power, light intensity, voltage, latency, and error percentage. The experimental method, using hardware (ESP32, RS485, LM2596) and software (Telegram) for data monitoring, was tested in the field. Testing was conducted twice on different dates, weather conditions, and for different durations. The results showed a system efficiency of 84.68%, error below 5%, accuracy of 99.54% for temperature, 98.52% for current, 98.7% for power, and 99.33% for voltage, with latency of 89-267 ms. The system was deemed to meet the criteria for a sustainable mobile tower monitoring solution.
Analisis Daya Listrik Total Harmonic Distortion Terhadap Efisiensi Energi di PT. Indonesia Chemical Alumina Hisyam Abdullah; Adi Mulyadi; Ratna Mustika Yasi
Journal Electric Field Vol. 3 No. 1 (2026): Journal Electric Field
Publisher : CV. Sekawan Siji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63440/jef.v3i1.127

Abstract

This study analyzes the relationship between Total Harmonic Distortion (THD) and electrical energy efficiency in medium-voltage distribution panels at PT Indonesia Chemical Alumina. Measurements were conducted using the ABB ANR96 power analyzer connected via RS485 communication and monitored using ABB SW01-128 software for seven days. The observed parameters include THDv, THDi, power factor (PF), and kW/kVA ratio. The results show that the average THDv in all panels is 0%, indicating voltage distortion within standard limits. THDi values vary across panels, with the highest value recorded at 3.60% and the lowest at 0%. The average PF ranges from 0.66 to 0.72, indicating moderate efficiency conditions. Correlation analysis shows a negative relationship between THDi and energy efficiency with a correlation coefficient of −0.2329 and a determination coefficient of 24.73%, categorized as low correlation. These findings indicate that although THDi values are relatively small, they still directly influence energy efficiency in medium-voltage distribution systems.
Co-Authors Hisyam Abdullah Ratna Mustika Yasi Trisuyono Suparmin Widhi Winata Sakti