Paper Details

Nowadays underground cables are used over than overhead lines in urban areas. Locating the fault in theunderground (UG) cable is tedious and there is a probability of damaging the insulation while digging the cable. Theproposed system offers easy and smart fault detection by automating it using a ATmega16 controller. The basic concept ofOhm’s law is applied at the feeder end though a series resistor. In case of short circuit of LL or LLG or LG the currentflowing in the faulty sections will vary depending on the length of the line. This paper aims at estimating the location offault distance and intimate. It is predictable to find a serious solution in maintenance environment of electric powerapplications to find extensive length of power cables using electrical means. This paper clarifies about lengthmeasurement of cable which can be lengthy for finding the location of open circuit point on a power cable using passiveelectrical parameters like capacitance. For the parameter calculation micro controller helped with display devices andresistive circuit are used. The microcontroller use algorithm to find the capacitance of the underground cable. Thealgorithm also computes the time charge ratio, with the help of passive parameters like current limiting resistance anddefinite capacitance of cable. The time charge ratio thus services the microcontroller to estimate the length of the cable.

Shraddha Shelar, Amruta Chabukwar, Mohini Yadav, Swapnil Narkhede, “Distance Calculation for Underground Cable Fault”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 7, Issue 6, pp. 18-23, June 2020.