Abstract: With the deepening construction of the new power system, large-scale distributed photovoltaic power generation and electric vehicle charging facilities have been connected, causing frequent voltage limit violations in rural distribution grids. This paper analyzes the reasons for voltage limit violations in rural distribution grids under the background of the construction of the new power system, combines the new flexible direct current distribution technology, and establishes a comprehensive life cycle assessment system. It compares the technical and economic feasibility of several measures for voltage limit violation treatment, and provides solutions for voltage limit violation treatment in different scenarios.