Prototipe Sistem Monitoring Temperatur, Tekanan dan Level Minyak Transformator Berbasis Internet of Things

Abstract

Transformers function to convert high-voltage electricity into medium or low voltage, playing a critical role in electrical energy transmission systems to meet society's electricity demands. Transformer oil is vital in maintaining the transformer's performance; however, changes in temperature, air pressure, and oil levels can affect its operation and potentially cause damage if not promptly addressed. This study aims to design a real-time monitoring system for transformer temperature, air pressure, and oil levels using the NodeMCU ESP8266 and the Blynk IoT application. The system utilizes a DS18B20 sensor to measure temperature, a pressure transmitter for air pressure, and a float level sensor to monitor oil levels. The first alarm is triggered when the oil temperature is between 60°C and 80°C or when air pressure reaches 12.32 psi. The second alarm activates when the oil temperature is between 80°C and 100°C or when air pressure reaches 12.87 psi. The third alarm sounds when the oil level falls below 10 cm from the bottom of the tank. This monitoring system is applicable to transformers because the existing electric and magnetic fields do not affect the performance of the sensors used. Additionally, these sensors do not negatively impact the transformer's performance, allowing the system to function effectively without interfering with the transformer's operations. The results of the study demonstrate that this system can effectively monitor transformer conditions in real-time through a smartphone using the Blynk IoT application. As a result, potential issues can be detected earlier, enabling faster corrective actions.