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Os tipos de chave seccionadora em subestações de alta e extra alta tensão​

A chave seccionadora proporciona o isolamento do equipamento de uma fonte de energia, abrindo e fechando circuitos por meio de operação manual ou automática para ...
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A importância de realizar ensaio de resistência ôhmica de enrolamentos

Teste verifica a integridade do enrolamento, identificando possíveis problemas, como curtos-circuitos ou conexões soltas, garantindo que a resistência esteja dentro das especificações do projeto.  ...
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The installed capacity in the National Interconnected System

In the Brazilian hydro-thermal-wind system, hydroelectric plants are responsible for most of the generation, with more than 60% of the installed capacity.
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The basic power transmission grid in Brazil

In a continental country, in which a large part of the energy generation is distant from the consumer units, having a basic transmission grid in full operation is not an easy task.
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How does the communication between the Operations Center and ONS take place

 The communication of an Operations Center with agents of the National Electric System Operator (ONS) and with the assets themselves is carried out through ground links and satellites, and is always registered through ...
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Anomalies in solar plants generated losses of US$ 435 million in 2021

According to the Global Solar Inspection Report, failures from photovoltaic plants will cause $435 million in potential losses to the world market by 2021.
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Environmental audit is performed without non-compliance at UHE Dona Francisca

The audit was conducted in June by a company approved by the responsible environmental agency, which verified the asset's structure, analyzed 41 documents, and four areas.
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COTESA carries out O&M of 7 thousand km of Transmission Lines

Present in 21 states, COTESA has direct communication, via hotline, with all ONS centralized dispatching centers in Brazil.
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Washing of insulator bays in substations

COTESA Engenharia carried out the washing of two isolator bays in two 500kV substations, in an action that involved 11 employees and lasted five days. Before starting the washing period, the professionals received training on electrical criteria, equipment characteristics, problem identification, methodologies adopted and safety aspects.
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