Resumo:
The purpose of this dissertation is the presentation and application of a method for estimating
reliability indicators for energy subtransmission systems, also known as high voltage
distribution systems. The methodology must associate the topology of the distribution lines
with the substation arrangements, thus being able to determine the reflection of this set on the
continuity indicators of the final consumers. The motivation for this study will be given by the
peculiarity of the subtransmission system, as they are few redundant, with many cases whose
system is radial. This portion of the electrical system is the beginning, in fact, of energy
distribution to most customers and has strong interaction with the distribution networks and
substations. As are the points of supply of the distribution systems, they have a direct impact
on the indicators of continuity of their customers and, consequently, of their own concession.
This work proposes the use of some statistical and physical tools that simulate the operation of
energy distribution systems and, consequently, estimate their performance through their
regulated indicators. Graph models are presented in 4 operational circumstances: Normal
operation; post-maintenance; post-defect and post-maneuver. The methodology proposes the
use of linear programming to identify the transition between these states, being the great
differential presented in this work, as it allows an intelligent algorithm, associated with the
component models presented here, to determine which equipment must be effectively
maneuvered to isolate the defect, directing the solution to the lowest possible load shedding.
