Análise dos efeitos da integração da geração distribuída na proteção de sobrecorrente de um sistema teste de distribuição

Abstract

The growth of distribution systems with the inclusion of distributed generators (DGs) is a reality that is taking place in several countries. The use of DGs in these systems brings benefits and challenges. One of these challenges is the effect of DGs on overcurrent protection. This paper contains simulation results when inserting DG in a test system - IEEE 13 bars. For this, overcurrent protection devices were incorporated into the original system, in the places where DGs were inserted, for an evaluation of the network's behavior. The impact of these DGs was evaluated in the application of symmetrical three-phase faults in specific locations of the system, for a given DG size. An analysis of current variation, selectivity and protection coordination was performed in numerical and graphical form, in 2 different scenarios. From the results obtained, it was observed that new adjustments for the protection devices must be considered, so that the system remains correctly protected with the inclusion of DGs.