Avalição de Segurança de Pessoas em Redes Rurais que Utilizam o Solo como Meio Condutor

Abstract

Electrical grounding is essential for an electric power distribution system, even more so in networks with the ground return. Amid the expansion of rural power systems, the cost of a three-phase network can make the project impossible, restricting the consumer to a SWER system. Recent studies have proposed the construction of a three-phase network from a SWER system. In this case, the earth is used with a phase conductor. This would make the installation of three-phase networks in rural areas financially viable. However, security issues still need to be evaluated for this type of structure. This work aims to study the security characteristics to implement such a network. The equations and safety assessments were performed in a virtual environment, but the soil stratification was based on results measured in a test terrain that proved to be safe in its operation even with several rods.