IoT Based Three Phase Voltage Monitoring for Protection of Load

Abstract

This system is presented to live track the three-phase connection and trip the relay according to the three-phase supply voltage variation. The device makes use of voltage sensors to monitor the voltage in every section it additionally allows the system to sense any odd circumstance in any of the phases like low voltages, high voltages. Most of the time the voltage varies over the threshold limits which may damage the working of the whole system as a load. To avoid such damages voltage must be monitored and measured using a voltage sensing circuit.
Based on the output of the voltage sensor the Arduino controller will decide the tripping of the relay circuit. A threshold value of under-voltage, over-voltage, is set by the user according to the application. By Using the ESP8266 Wi-Fi module we can also save the data of voltage on the cloud. The sensor voltage is also displayed on the LCD which is interfaced with an Arduino board.