Research on the economic impact of users' capacity on connection modes of medium-voltage distribution network

This paper establishes an economic analysis method of medium voltage distribution network connection mode, which considers the “dead zone” of power supply capability. Assuming that users' capacity in medium-voltage distribution network follows probability distribution, this method analyzes several indicators such as load rate upper limit of different connection modes and investment. The method of quantization, comparison and selection of different distribution network structures, which considers the influence of users' capacity is proposed. In the context of power system reform, it meets the needs of expansion planning in medium-voltage distribution network where large-capacity users are centered.