Review of the Effects of Transformer Configuration on Distributed Generator Interconnection

This paper reviews and discusses the effects of interconnection transformer configuration on distributed generator (DG) interconnection. Transformer is the key component of the interconnection of DG installation whenever a transformer is required. Further, proper grounding of the transformer and reliable coordination for protection and control are areas that need to be reviewed carefully and applied appropriately. This paper discusses various system grounding options, merits and applications in DG system. The paper also suggests suitable protection system that are required to overcome operational failures and damages to both the utility and DG due to abnormal conditions. This paper, however, does not present any case study evaluations, but an analysis reviewing literatures, including a few latest publications and reports.