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Energetic and economical analysis for a LVDC residential district

pubblicazioni - Memoria

Energetic and economical analysis for a LVDC residential district

Oggigiorno molte risorse sono collegate alla rete elettrica tramite convertitori di potenza. Questo articolo valuta i risparmi energetici ed economici ottenibili con l’adozione di una rete in corrente continua BT al fine di sostituire la rete tradizionale CA per alimentare un distretto residenziale.

Distributed generation, energy storage systems and a growing number of loads are interfaced to the grid through power electronic converters. In this context, a distributed system in direct current could guarantee advantages from different points of view. This paper assesses, through an analytical study, the energetic and economic savings achievable by the adoption of a low voltage direct current distribution grid in order to replace the traditional grid in alternating current to supply a residential district. According to the analyses carried out appears that the benefits achievable by the adoption of distributed grids in direct current are reduced from energy and economic point of view.

The economic benefits occur for the single user when the distribution grid, starting from secondary substation, is completely in direct current. This causes an higher cost for the distribution system operator in the realization of the secondary substation, where must be installed a suitable power converter. The distribution system operator could however achieve many benefits from technical point of view because the adoption of distributed grids in direct current allows a better and simple integration of renewable sources and storage systems.

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