Supervision and control of inverters for ancillary services in MV distribution networks

In this paper, a converter control strategy able to provide ancillary services implemented for the Italian MV distribution Networks has been presented. A three stage system composed by several boost converters, a VSI Active Front End and a transformer has been considered as interface between distribution grid and DERs. The proposed control strategy operates jointly to the DMS. Simulations have been performed and the system seems to work properly, well following DMS reactive power reference and preventing DC bus voltage large variations.