This video isn’t available to you right now
Login to check your access and watch the full session.
To redeem an access code, first log in.
About the session
This presentation will explain the last major power outage case in the Brazilian interconnected power transmission system, addressing causes and consequences of the disturbance. The event discussed in the presentation started at 8:30 am on August 15, 2023, due to an automatic shutdown of a 500 kV/60 Hz transmission line in the Northeast Region of Brazil, when the region was exporting energy predominantly from wind and photovoltaic generations. Severe voltage variations were observed in the region, leading various transmission lines to open. It caused the separation of the macro-regions of the National Interconnected System leading 23,368 MW of the total load in Brazil to be interrupted (about 34.5%). Great efforts were made to quickly restore the system, which was accomplished with an average time of about 197 minutes in the North/ Northeast macro-region and 35 minutes in the South/Southeast/Midwest macro-region. Given the great proportions of this event, several lessons were learned, and interesting conclusions were drawn on the system inertia, stability, reference models and protections. All these lessons learned have been useful to improve the operation of the Brazilian interconnected system, and these aspects are addressed in this presentation. Felipe Lopes, Professor, Federal University of Paraíba
