Comparative Analysis of DC Distribution Schemes for Low-voltage Control at the End of the Grid

In order to solve the problem of low voltage at the end of the distribution network caused by excessive load, considering the cost and economy of power grid construction, a DC power distribution scheme is constructed by using power electronic conversion and control technology without changing the structure of the existing AC distribution line to meet the terminal voltage requirements. This paper conducts research on several common DC distribution schemes, analyzes their working principles, and compares and summarizes several schemes in multiple dimensions to provide references for subsequent DC distribution engineering planning and construction.