Projeto malha de aterramento de uma subestação: um estudo de caso.

Abstract

This report presents the design and development of design ground grid to be applied in the protection of a medium voltage substation (69/13, 8 kV) at the industrial Polo Petrobras located in the city of Guamaré-RN, which meets the standards in Brazil Petrobras and existing standards, ensuring a satisfactory safety equipment and people who have contact with it. The equipment and software used in the measurements and analysis of the measures were the terrômetro and software Microsoft Excel 2010. For stratification of soil and ground resistance measurement methods were used and the Wenner method Megger respectively. With these materials and methods is obtained and analyzed field data, which enable the development and implementation of ground grid as setting specifications for soil and configuration of the substation. With the results of measurements performed in the mesh fitting is implemented within the expected values, it is concluded that the calculations were done well and meet all criteria established for the project, and that no obstacles as to derail the study.