Ricerc@Sapienza

The paper proposes real case of application of a smart integration of Electrical Vehicles (EVs) charging stations with Dispersed Generation (DG) that can guarantee the maximum exploitation of the system and its sustainability. The case study is a real distribution grid of e-distribuzione, the main Italian Distribution System Operator (DSO). Different kinds of EVs charging systems and spread scenarios are hypothesized and different Optimal Power Flow (OPF) models, with different objective function, reflecting different needs of DSO, have been implemented and tested.

In many applications, like hospitals, the reliability of the emergency electrical supply is a critical issue, since the continuity has to be guaranteed at any time. The backup system usually consists of gensets and electrical starters (DC motors), supplied by lead-acid batteries. It is a fact that the latter are responsible for most genset cranking failures occurring in hospitals. Therefore, the reliability of the storage system should be improved to increase the Overall Mean Time Between Failures (MTBF) of the whole backup system.