Abstract
Abstract: A fault can be defined as any event that interferes with the normal flow of current. Generally, electrical power systems are exposed to the occurrence of any type of contingency, which may be external or internal. Underground cables are commonly used for transmission and distribution of power particularly in cities. Faults in underground cables hamper the continuous supply of power to industrial facilities and households. This paper details different types of faults commonly occur in underground cables and a device has been developed and tested, using ohm’s law principle, for detecting underground faults. This system uses an Arduino microcontroller board and a rectified power supply. Here the current sensing circuits, made with a combination of resistors, are interfaced to Arduino microcontroller board to help of the internal ADC device for providing digital data to the microcontroller representing the cable length in kilometers and displayed on LCD display. Keywords: Underground Cable, Fault Location, Fault Detection, Microcontroller, Power Transmission
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