Coordination and Selectivity of Protection Devices with Reliability Assessment in Distribution Systems

Abstract

This chapter provides an overview of the reliability of electricity distribution networks, and its evaluation that is linked with the protection system. In this way, the characteristics of network protection are presented, along with the peculiarities in coordination and device selectivity adjustments. For the assessment of the reliability, we have the methodology of logic-structural matrix (LSM) that integrates the constitution of the network with historical data of faults, so that with this, a model can be elaborated that can evaluate the impact of changes in the system directly on the reliability indicators.

Índice para Avaliação da Coordenação e Seletividade da Proteção em Sistemas de Distribuição

“…Os sistemas elétricos de distribuição de energia são compostos de longas redes, em sua maioria aéreas e empregando cabos nus. Devido ao tamanho e a exposição podem sofrer faltas de diversas naturezas, o que torna crucial o uso de dispositivos de proteção (Boaski et al 2017). Os dispositivos mais utilizados são religador e elo fusível, que são discutidos nas próximas subseções.…”

Unconventional Backup Structures Used in Smart Microgrids

“…Finally a study about the implementation of recloser devices for autoconfiguration and automatic connecting/disconnecting decisions, in order to switch to the backup power supply, was initiated. Also, taking into account a series of scientific, technological, or socioeconomic aspects in terms of importance, the implementation of smart power grids is proposed [3]. This smart grids show auto-reconfiguration characteristics, by using recloser devices [4].…”