IOT Based Three Phase Over Voltage and Under Voltage Protection and Alert System

ABSTRACT The main aim of the thesis is to acquire real time fault monitoring of transmission lines remotely over the internet falling under the category of the internet of things (IOT). For this real time aspect we take one temperature sensor, one potential transformer, and one current transformer for monitoring V,I, over voltage, under voltage, short circuit, open circuit data of the line and then send them to a remote location. This five analog values are taken in multiplexing mode and connected to a programmable microcontroller of AVR ATMEGA 328p-pu families through an ADC inbuilt. They are then sent directly to a Wi-Fi module under TCP IP protocol to a dedicated IP that displays the data in real time chart form in any web connected PC/Laptop for display in 3 different charts. So, this transmission line Health Measuring will help to identify or recognize unexpected situations before any serious failure which leads to a greater reliability and significant cost savings. Keyword: Transistor, Relay, Transformer, Diode, Capacitor, Resistor, Sensing Unit, etc….