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determine the distance of underground cable fault
03:50
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03:50
PROJECT DESCRIPTION
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The objective of this project is to determine the distance of underground cable fault from base station in kilometers. The underground cable system is a common practice followed in many urban areas.
While a fault occurs for some reason, at
that time the repairing process related to that particular cable is
difficult due to not knowing the exact location of the cable fault. The
proposed system is to find the exact location of the fault.
The project uses the standard concept of
Ohms law i.e., when a low DC voltage is applied at the feeder end
through a series resistor (Cable lines), then current would vary
depending upon the location of fault in the cable.
In case there is a short circuit (Line
to Ground), the voltage across series resistors changes accordingly,
which is then fed to an ADC to develop precise digital data which the
programmed microcontroller of 8051 family would display in kilometers.
The project is assembled with a set of
resistors representing cable length in KM’s and fault creation is made
by a set of switches at every known KM to cross check the accuracy of
the same. The fault occurring at a particular distance and the
respective phase is displayed on a LCD interfaced to the
microcontroller.
Further this project can be enhanced by
using capacitor in an ac circuit to measure the impedance which can even
locate the open circuited cable, unlike the short circuited fault only
using resistors in DC circuit as followed in the above proposed
project.
