In recent years, the installation of wind farms, mainly in the Northeast region of Brazil, has shown strong growth, requiring the expansion of the transmission system along with the implementation of a new remedial action scheme (RAS), which involves 15 different transmission companies. This paper discusses the difficult operating scenarios that this new RAS solves in the Brazilian power system, the design criteria and challenges, the deployment of such a system, and the wide-area communications system configuration and test results to accomplish a fast and reliable tunnel for the IEC 61850 Generic Object-Oriented Substation Event (GOOSE) messages, as well as how the cybersecurity requirements were fulfilled.
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