Utilização de Tecnologia Híbrida para compactação de subestações elétricas

Abstract

In recent years, with the increase of urban areas and the consequent reduction of the available space for the construction of electrical substations near the load centers, a great challenge was initiated looking for ways to make the structures of the substations more compact and to adapt them to reduced spaces. In this sense, hybrid technology has become a viable option technically and economically, used by power concessionaires throughout Brazil, to compact their substations allowing flexibility to their arrangements. This paper aims to present the hybrid technology and its applications, showing its main aspects and components. In the course of this work, concepts and definitions about hybrid technology were presented, as well as its main facilitating agent, the SF6 gas, showing the equipment currently commercialized using this technology, and the theory behind the technology of such equipment. In addition, applications of this solution were presented, where compactness and adequacy of substations were sought in a reduced space, without losing the criteria of reliability and operational safety. At the conclusion of the presentation, a technical proposal of 72.5 / 15 kV industrial substation was prepared as an alternative solution for a project that needed electrical infrastructure to be serviced at high voltage, but had little space available for deployment. After a brief comparison with the conventional solution, it is concluded that the use of the hybrid technology, with compact module to SF6, provides compaction around 20% of the area of impact of the substation, reducing civil works and electromechanical materials, besides guaranteeing greater reliability the visual aspect of the substation.