Economic Evaluation of Flexible Interconnection Device in Distribution Network

This paper proposed a multi-terminal MV converter system for flexible interconnection of distribution networks, in order to solve the problems arisen from distributed PV, electrical vehicle charging infrastructures, and increased power consumption in the distribution network. The application scenarios of the proposed MV converter system were described based on investigation of typical architecture of an urban distribution network. The released additional power for the distribution network as an important benefit of the proposed MV converter system was analyzed and derived. Based on the analysis, economical evaluation of MV converters in the proposed system was performed from two aspects, theoretical comparative cost of AC substation with FID and theoretical payback time.