Geometria de malha de aterramento elétrico otimizada

• Autor(a) principal: Silva, Carlos Leandro Borges da
• Data de Publicação: 2022
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/001300000bstx
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/12558
• topic: Aterramento elétrico; Otimização; Grounding grid; Optimized; ENGENHARIAS::ENGENHARIA ELETRICA::TELECOMUNICACOES

This work presents a methodology for calculating earth resistance, grid potential elevation, soil surface potential, touch voltage and step voltage in ground grids with optimized geometry in two-layer stratified soils. The values of the potential and touch and step voltages are obtained at any point on the grid. The proposed equation uses the methods of images and an average potential. The main characteristic of this model in relation to the others is the possibility of calculating grounding grids containing horizontal and vertical electrodes positioned at any distance and at any angle. The results obtained with the proposed methodology are presented and discussed. The results show a reduction of approximately 60% in the amount of horizontal conductors and approximately 30% in the amount of vertical rods in electrical grounding grids. The optimization of the grounding grids geometry presented in this work allows the creation of electrical grounding grids that meet the safety criteria with lower cost compared to traditional methods, in addition to allowing the reduction of the inductive effect due to a smaller amount of conductors in the grounding grids.