Fault location is finding exact fault position of cable when
there were any unwanted accidents like short circuit, open
circuit, insulation breakdown, etc.
Because of large damage and inference of power cable
accident, power authorities want to have exact fault
detection method to recover power lines as soon as
possible. Various methods have been developed to reduce
damage and inference.
But most of fault detection methods have shortcomings.
Some have low accuracy, some are difficult to apply
because of surrounding environment, some give unwanted
damage to healthy neighboring cable and facilities.
Among these fault location methods, pulse echoing
method are regarded as most useful ones. This method
use time difference between incident and reflected pulse
to calculate fault location detection .
When short periods pulse injected onto power line, there
will be reflected waves according to the status of power
cable. For example, short, open, joint power lines reflect