Monitoring voltage, current, and frequency in electrical
systems is essential to ensure optimal performance and equipment safety. This
research aims to design and build a monitoring system that is capable of
measuring voltage, current, and frequency on 3-phase electrical panels for audio-sound
systems. This system uses an ESP32 device as a microcontroller and Ubidots as a
cloud platform for visualization and real-time data storage. Measurements are
carried out with voltage, current, and frequency sensors connected directly to
the electrical panel using the PZEM-004t power sensor. The measured data is
sent wirelessly via Wi-Fi protocol to the Ubidots server to be displayed via an
online dashboard.
The designed monitoring system provides accurate and
real-time monitoring of electrical parameters. Analysis of this system
considers its ability to be accessed remotely over a network, enabling
efficient remote monitoring. Apart from that, this system is also equipped with
notification integration via the Telegram application, allowing users to receive
direct notifications regarding disturbances in the electrical panel. System
testing was carried out in three stages: mean absolute percentage error (MAPE)
testing, telegram notifications, and usability testing. MAPE testing was
carried out by comparing this system with existing electrical panel boxes,
while observations were carried out by five sound engineers to evaluate the
system's performance in monitoring voltage, current, and frequency accurately
and stably.
The test results show that the system can measure and
monitor electrical parameters well, providing useful information for the
maintenance and management of the electrical system. From MAPE testing, the
average error results for voltage testing were 0.4%, current 10%, and frequency
0.6%. In usability testing, the system showed excellent results, with a
learnability of 98%, flexibility of 94%, effectiveness of 98%, and attitude of
100%. Thus, the implementation of this system is expected to increase the
operational efficiency and stability of the audio-sound system.
Keywords : Monitoring,
voltage, current, frequency, electrical system, ESP32, Ubidots, sensor, Wi-Fi,
real-time, online dashboard, audio sound system, efficiency.