Urban Distribution Network Planning Considering Three-Sectioned and Two-Linked Network

Three-sectioned and two-linked lines are widely used in urban distribution networks due to its high dependability and high line load rate. In newly developed urban areas, manually planning three-sectioned and two-linked lines is often challenging and time-consuming. This paper focuses on optimally planning three-sectioned and two-linked lines for practical urban distribution networks. First, this paper analyzes common connection configurations in current urban distribution networks. Next, a mixed-integer linear programming (MILP) model is proposed for directly planning three-sectioned and two-linked lines in distribution network. Finally, an algorithm for verification is introduced to evaluate the resilience of the planned three-sectioned and two-linked lines in distribution network under fault scenarios. The effectiveness and practicality of the proposed model are demonstrated on a real distribution network consisting of 22 blocks.