Assessment on Technical Impacts Regarding the Massive Penetration of Nanogrids in Electric Power Distribution Systems

The adoption of nanogrids by electricity consumers has been increasing in many countries. Consumer units have been deploying small-scale renewable energy generation with or without energy storage systems (ESS). Electrical distribution system (EDS) operators will have to adapt their networks in order to fulfill the needs regarding a rising insertion of grids in nano scale. In this context, knowing the effects of a massive nanogrid penetration is fundamental for proper power system planning and operation. In the light of such need, this paper presents a methodology to model the massive integration of different nanogrid topologies into distribution systems. Considering seasonality and different penetration scenarios, nanogrids are allocated on a secondary distribution system which are connected to a primary system. Results show that the primary feeder may have a daily consumption reduction of up to 15% while its technical losses may decrease by 23 %.