Utilização do OPENDSS para análise em sistemas de proteção de circuitos em instalações elétricas consumidoras

Abstract

The design of the protective system of a consumer electrical installation involves a large sequence of stages and for this it is necessary to determine the short circuit currents at the installation places of the protective devices. The calculation of short-circuit currents is

something complex and it is often neglected by designers. This creates a critical point be- cause a protection system can cause technical, financial and, in particular, personal safety

damage if poorly designed. Considering the relevance of this topic, this course completion work aims to verify the feasibility of using the software OpenDSS, which enables the study

of faults, as a complementary tool for estimating short-circuit currents for the design of pro- tection systems in consumer electrical installations. To develop this work, an example of a

case study was used by a plastic manufacturing company. The required parameters for the simulation were based on the installation’s electrical schematic and calculation according to current norms and the local power dealer. The results of the simulations were compared to the data from the electrical design of the installation and the calculation of the assumed short circuit currents by the simplified method.