Optimization of the Tie Lines in Urban Distribution Network Based on Two-Tie Connection Mode

Urban distribution network planning is a combinatorial optimization issue that requires consideration of many actual factors to make the planning more practical. It is difficult and time-consuming to artificially determine the feeder routing for a new urban area. In this paper, the tie line optimization model for urban distribution network based on the two-tie connection mode is researched. Firstly, we analysis the commonly used connection mode in current urban distribution network, and then present the planning strategy considering street layout to realize the optimization of tie lines in distribution network based on the two-tie connection mode units. Finally, we develop a mixed integer linear programming model for the optimization of tie lines which can be solved analytically. The validity and effectiveness of the proposed model are illustrated on a real 39-block district distribution system.