Proposta de um modelo de automação para proteção de uma subestação elétrica em 69kv/13.8Kv utilizando o protocolo de comunicação IEC 61850 como padrão para gerenciamento de mensagens e diagnose de falhas do sistema elétrico

Abstract

This work aims to propose the modernization project of an electric substation with 69Kv supply and distribution to seven branches in 13.8 kV. This is because the gift installations are discontinued in relation to the automation network, referring to digital relays, communication protocol and physical medium. These difficulties and instabilities of the electrical system automation network motivated this new communication platform for automation of the new substation, intelligent devices (Digital relays) will be used with the IEC 61850 standard communication protocol, ensuring interoperability between all the installed devices, enabling command Remote, oscillograph, history, fault diagnosis and real-time events that will be monitored by the supervisory interface used Elipse Power and extraction of this data through the interface of engineering through the tool Asceleration Quick Set of SEL. The IEC 61850 protocol has great improvement when it is applied to the automation to protect electrical systems, because in addition to being scalable allowing future extensions, it allows segmentation for message traffic between MMS and GOOSE due to the high speed of the messages GOOSE exchanged among the IEDs, Reason will be used in the GPS automation architecture to synchronize the entire network, to capture status, oscillography and historicity be in real time so there is no delay in the network events.