Optimal Planning Method of AC/DC Microgrid Based on Node Coupling Degree and Power Balance Degree

In the planning of an Alternating Current/Direct Current (AC/DC) microgrid, there are too many interference factors, which leads to the difference between the planning results and the actual situation. Therefore, an optimal planning method for AC/DC microgrid based on node coupling degree and power balance degree is proposed. Under the analysis of node coupling degree and power balance degree, the optimal planning structure of the AC/DC microgrid is constructed to achieve maximum power output. Based on the objective function of the upper planning structure and the objective function of the lower planning structure, the objective function of AC/DC microgrid optimization planning is calculated, the data of AC/DC microgrid is dimensionless, the standardization rules are formulated, and the optimal planning method flow of AC/DC microgrid is designed to realize the optimal planning design. The experimental results show that the utilization rate of this method is above 90%, and the application effect is good, which can meet the power target of AC/DC microgrid optimization planning.