الفهرس 
GENERATION OF MINIMAL PATHSOnly 14 pages are availabe for public view
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Abstract
The focus of this research work is on the reliability evaluation of
distribution substations using an analytical approach. Basic load point
reliability indices are to be evaluated at various load points in a substation
taking into account both passive and active failures, malfunction of normally
closed circuit breakers, and scheduled maintenance. Then, additional system
reliability indices for the whole substation are to be evaluated, which can be
used in comparing substation designs based on their reliability. Besides, this
research work allows developing a reliability model for distribution
substations to be utilized in HL-III adequacy assessment.
This thesis recognizes the need for an appropriate modeling for
various components used in substations. This permits the inclusion of all the
realistic component failure modes in the reliability prediction, and appeared
through two categories of minimal cutsets; basic and non-basic. The
analytical approach utilized here for reliability evaluation is based on a
Failure Modes and Effects Analysis (FMEA) which employs the technique
of minimum cutsets to compute the frequency and duration of a fault with
respect to the criterion of continuity of electric service.
In addition, a computer program is described for generation of
minimal paths, generation of minimal cutsets, and evaluation of reliability
indices. The application of this program is illustrated by considering a
practical substation example