Understand How Latin America’s Largest Thermoelectric Plant, Porto de Sergipe I, Will Contribute to Energy Transmission Security and Reducing Blackouts in Brazil
The construction of the new thermoelectric plant Porto de Sergipe I, by the company Centrais Elétricas de Sergipe S.A. (CELSE), is in full swing, and now it’s time to discuss more details of the project that are fundamental for the plant’s full potential to connect to the grid. After the arrival of the world’s most efficient gas turbines, high-voltage equipment is being installed at the plant’s substation. These are the tools that will perform the invisible work of electrical protection and the transmission of electricity at 500kV to the Basic Network of the national electrical system.
Grid Solutions, GE’s transmission and distribution division, has the Porto de Sergipe plant as one of its largest contracts. Responsible for the project, supply, and installation of all high-voltage equipment, it will also create a transmission line and two substations intended for transformation, measurement, protection, and handling of the electricity produced by the plant.
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The newly arrived high-voltage equipment, all manufactured in Brazil, will elevate the voltage of the electricity produced by the plant, as well as potentially ensure the safe transmission of energy.
Installation of the Electrical Network

UNVEILING THE OPERATION
The Porto de Sergipe plant could quadruple energy production in Sergipe, potentially making it the second-largest state in generation in the Northeast. The energy produced by the plant at an average voltage of 25kV is transformed by the step-up transformers supplied by GE into high voltage of 500kV, allowing it to be safely transported to the point of connection to the national grid.
The transmission line, which is still under construction, will feature a double circuit to provide greater operational security for energy transmission, potentially significantly reducing blackout risks. It will extend 35 km to a new connection bay, composed of protection equipment, interconnecting the plant with the Basic Network.
Later this July, four new members will arrive to complete the high-voltage equipment team in Sergipe: the step-up transformers. We will continue sharing more about the Sergipe project! For these stories, enable notifications and stay tuned to our social media. Source GE
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