Through IoT technology, essential operational data is collected and displayed locally on an LCD interface. Additionally, this data is transmitted remotely to cloud platforms like Adafruit.io for analysis, allowing for proactive maintenance. The system’s architecture incorporates sensors interfaced with a microcontroller, ensuring seamless data acquisition and transmission. This system empowers utilities to optimise power distribution networks and enhance operational reliability cost-effectively.
In the system design, the ACS712 current sensor detects the transformer’s current and identifies overload conditions, while the DHT humidity and temperature sensor monitors the temperature of both the transformer and its surroundings. The ultrasonic sensor tracks the transformer’s oil level. The Adafruit IO dashboard enables data monitoring on an IoT platform. The ESP32 board connects the system to a Wi-Fi network, sending data to the IoT dashboard. The authors’ prototype is shown in Fig. 1, and the required components are listed in the Bill of Materials table.
Prerequisite
The Arduino IDE is used to write the software, and the ESP32 board must be installed on the IDE. Follow the steps provided on the ESP website to add the ESP32 to the Arduino IDE. After installation, the libraries for the DHT sensor, ACS712 current sensor, and LCD display must be added via the Arduino Library manager.
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