Blackout in the South and Southeast was ‘controlled action’ after problem generating ‘electrical separation’ between regions of the country, says ONS

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Blackout affected at least 18 states and the DF, in the five regions of the country, this Tuesday morning. Outages stopped subway lines in Belo Horizonte, Salvador and São Paulo. ONS graph shows sudden drop in power generation around 8:40 am this Tuesday (15) which affected at least 18 states and the Federal District involved a “controlled action” – that is, purposeful – to prevent the network problem from spreading. According to the agency’s explanation, an “occurrence” at 8:31 am led to an “electrical separation” in the interconnected system. In practice, it is as if the North and Northeast regions of the country had become disconnected from the South and Southeast regions. The causes of the problem, according to the ONS, are still being investigated. “There were at least 16,000 MW of power outages. The outage in the South and Southeast was a controlled action to prevent the occurrence from spreading”, says the ONS. Also according to the agency, of the 16,000 megawatts (MW) interrupted, 7,000 MW had already been recomposed by 10:09 am – and the restoration had already been completed in the South and Southeast by the same time. The g1 found that there are also reports of power outages in the South (SC and PR) and Midwest (DF, MT and MS) regions. These regions are not mentioned in the ONS note. Ministry monitors the case Also in a note, the Ministry of Mines and Energy reaffirmed the ONS information and declared that Minister Alexandre Silveira determined the creation of a “situation room” to monitor the case. Silveira is in Asunción, Paraguay, where he is accompanying President Luiz Inácio Lula da Silva to the inauguration of the new president of Paraguay, Santiago Peña. Brazil and Paraguay share the management of the Itaipu hydroelectric plant, on the border between the countries. National blackout leaves at least 19 states and the DF without power states in the North and Northeast of Brazil. Southeast states were also affected. The interruption occurred due to the opening, at 8:31 am, of the North / Southeast interconnection. The causes of the occurrence are still being investigated. The recomposition has already started in all regions and by 9:16 am, 6 thousand MW have already been recomposed. Ministry of Mines and Energy The Ministry of Mines and Energy (MME), based on data from the National System Operator (ONS), informs that an occurrence in the operation network of the National Interconnected System (SIN) interrupted 16 thousand MW of load in states in the North and Northeast of Brazil, this Tuesday (15/8). Southeast states were also affected. The interruption occurred due to the opening, at 8:31 am, of the North / Southeast interconnection and the causes of the occurrence are still being investigated. The recomposition has already started in all regions and by 9:16 am, 6 thousand MW have already been recomposed. The MME team is working so that the load is fully restored as soon as possible. Minister Alexandre Silveira has already determined the creation of a situation room and is monitoring the resumption process, as well as determining the investigation of the causes of the incident.

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