Dissertação
Metodologia para análise da confiabilidade no planejamento de sistemas de distribuição utilizando matrizes lógicoestruturais
Fecha
2016-08-19Registro en:
MARQUES, Leandro Dutra. Metodologia para análise da confiabilidade no planejamento de sistemas de distribuição utilizando matrizes lógicoestruturais. 2016. 91 f. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Federal de Santa Maria, Santa Maria, 2016.
Autor
Marques, Leandro Dutra
Institución
Resumen
With the constant requirement for improving the levels of quality and reliability
in the power distribution systems, especially with regard to the quality of service
(duration and frequency of outages), it has intensified the need for a better planning
and operation of the electrical grids in all voltage levels. One of the main challenges
in the distribution systems is the balance between customer satisfaction, regulation
(legislation) of power sector and the return on the capital invested by the utilities.
Often this search for resource optimization ends up being hampered by process
problems, lack of tools, few experts, among other issues, in most cases favoring a
poor planning of electrical system reliability. In many cases the planning criteria used
by the distribution companies are related only to the equipment load, voltage level
control and new customer access, so it seldom has the reliability among the
elements. Even when reliability is part of these criteria it's usually based just on the
assessment of historical outages. Due to this deficiency, the subject of this
dissertation is the use of a method for forecasting reliability in the electrical planning
stage, i.e., it will be proposed actions such as installation of new switches, use of
different network topologies, reduction of failure rates and recovery times, and finally
calculated the impact of these actions on the reliability KPIs. The methodology for
forecasting the indicators is based on logical-structural matrix, which use information
such as failure rates and mean time to restore the power to different network
segments. It will also be presented a case study proposing planning actions in a real
distribution grid with subsequent evaluation of the impact on reliability KPIs of an
electrical utility.