MV microgrids –case study

Abstract

Distributed Energy Resources (DERs) are now a reality for every DSO. During previous years a sustained effort has been made to accommodate the distribution network operational requirements to new challenges. Papers presented at CIRED 2015 Conference covered some topics related to the DER impact on MV distribution network such as unwanted islanded operation or optimal penetration degree. This led to discussions about those issues for two case studies: the first case concerning three micro hydroelectric power plants and the second case about photovoltaic generation combined with wind generation.One very interesting aspect emerged: if certain conditions exists both areas could operate in islanded mode for definite time intervals.This paper continues previous studies from a different point of view, considering both areas as potential microgrids operated by DSO at MV level and needing SCADA observability for the microgrid operation.