Abstract: Underground cables are prone to a wide variety of faults due to underground conditions, wear and tear, rodents etc. Diagnosing fault source is difficult and entire cable should be taken out from the ground to check and fix faults. The project work is intended to detect the fault in underground cable lines from the base station to another substation using a Microcontroller. To locate a fault in the cable, the cable must be tested for faults and fault creation is made by a set of switches at every known distance between two substations. In case of fault, the voltage drops and changes accordingly, which is then fed to a programmed microcontroller IC that further displays on IoT fault. IoT is used to display the information over Internet using the Wi-Fi module ESP8266. A webpage is created using HTML coding and the information about occurrence of fault is displayed in a webpage or also can use android application for same.

For the real worldwide operated voltage distribution lines underground cables have been used from many years. In order to reduce the sensitivity of distribution networks to environmental influences underground voltage cables are highly used. Underground cables have been widely used in power distribution networks due to the advantages of underground connection. Underground cable system is a common practice followed in urban areas. While a fault occurs due to many reasons in the cable, at a time of removing or repairing process, there is difficulty in locating also nearby location of the fault. The system proposed in this project is used to find out the sub area location of the fault and display it to the dedicated application over internet using Wi-Fi module.

Keywords: HTML, IoT, Microcontroller, Wi-Fi.

| DOI: 10.17148/IARJSET.2020.7604