WEG, in collaboration with COPEL, UFSM, and VEGOOR Tecnologia Aplicada, has implemented hybrid paper technology in transformers through an innovative R&D project. The initiative, part of the ANEEL Research and Development program, focused on replacing traditional Kraft paper with NOMEX 910® hybrid paper in transformer insulation.

The project involved a complete upgrade of a 1969 three-phase step-up transformer (70 MVA, 13.8/230 kV) at the Governador Parigot de Souza Hydroelectric Plant in Paraná, Brazil. By modernizing the high-voltage windings with hybrid paper and switching from mineral oil to a sustainable vegetable insulating liquid, WEG achieved significant enhancements, including:

• Increased transformer capacity to 73.6 MVA.
• Improved thermal monitoring with 16 optical fiber sensors for precise temperature tracking.
• Enhanced sustainability by reducing environmental impact and costs, such as oil containment during leaks.

This development not only boosts reliability at the hydroelectric plant but also aligns with sustainable energy goals. The advanced materials and monitoring systems contribute to a longer transformer lifespan and optimized operations.

Source: weg.net