The Effect of Various Types of DG Interconnection Transformer on Ferroresonance

When switching occurs in a distribution network, in the presence of distribution generators, overvoltage is a possibility due to ferroresonance especially in unbalanced switching. This paper focuses on ferroresonance phenomenon in distribution networks in the presence of Distributed Generation (DG). The main goal of this article is to determine the effect of various types of DG interconnection transformers on balanced and unbalanced ferroresonance. The studies are performed based on a digital computer simulation approach using the PSCAD/EMTDC software package.

Keywords:

Distributed generation , ferroresonance , interconnection transformer , island , overvoltage