PERFORMANCES COMPARISON INSIDE THE ELECTRIC ENERGY STORAGE SYSTEMS OF ENEL DISTRIBUZIONE

The Enel vision of Smart Grid include the Electric Energy Storage Systems as a fundamental component of the future distribution networks. Four Electric Energy Storage Systems (1 ÷ 2 MVA – 1 ÷ 2 MWh) were recently build and connected on the MV Italian distribution network by Enel Distribuzione in cooperation with technology supplier; these four installations follow the first Enel Distribuzione Electric Energy Storage Systems connected on an MV Italian distribution network (1 MVA – 0.5 MWh) on 2012. This paper presents a comparison of the results of the main site acceptance tests performed on these systems, detailing the adopted procedures.