Aplicação da técnica de self healing na reconfiguração automática de redes elétricas utilizando o padrão IEC 61850

Abstract

This work aims to propose a Smart Grid composed of two substations for the implementation of the self healing technique using Real Time Digital Simulator (RTDS) and IED (Intelligent Electronic Devices) protection relays with communication through standard IEC 61850 between them. In distribution networks, self healing techniques can be used in order to reduce the times with the loss of electricity supply to consumers caused by a short circuit, thus reducing the losses to consumers and due to fines. The methodology applied is based on the proposed circuit modeling in the RTDS, which is monitored in real time. Several types of short circuits are simulated at different points in the system and, in each fault generated, the program developed analyze the pre and post fault system data, isolating the section affected and automatically reconfiguring the circuit to restore the power supply to the affected loads. The choice of the final network arrangement, after the automatic reconfiguration process, is based on an optimization process called Reconfiguration by Power Addition - RPA .Communication between RTDS and IEDs (which protect part of the system) use the IEC 61850 standard with GOOSE (Generic Object Oriented Substation Event) message exchange applying the relevant aspects of this standard.