الفهرس 
Importance of Fault Location
SYNCHRONIZED SAMPLES AND PHASOROnly 14 pages are availabe for public view
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Abstract
Following the occurrence of a fault, the utility tries to restore service as
quickly as possible. Rapid restoration of service reduces customer complaints,
outage time, loss of revenue, and crew repair expense. To aid in rapid and
efficient service restoration, algorithms have been developed to provide an
estimate of the fault location. These algorithms have been developed on a
variety of principles utilizing information available in the substation.
The objective of this thesis is to develop an unsynchronized/synchronized
two terminal fault location estimation algorithms, this algorithms allows for
accurate estimation of the fault location irrespective of fault type, fault
resistance, load currents, and source impedance. A computer simulation using
EMTDC program of the transmission line under study with various fault events,
different locations and synchronizing errors are performed. Four different
modal transformations are tested to find out which one gives the closest
location to the simulated location to be used to design and implement the
algorithm on a microcontroller board.
The 68HC12 microcontroller unit IS used to implement an assembly
language program utilizing the algorithm with synchronized data. This thesis
gives a hardware proposal for a stand alone fault location device which uses the
Global Positioning System (GPS) as the source for synchronizing data between
the two ends of the transmission line.