Flow Calculation of Flexible Interconnected Distribution Network with SOP

In recent years, in order to meet the higher power quality and the limitations and deficiencies of most traditional distribution network primary equipment in terms of capacity, adjustment times and continuity, power electronic equipment such as ring network power flow controller, ring network power balancer, SOP, flexible DC link and so on have appeared and been applied to the power system. By analyzing the control strategy of multi-terminal DC system, a unified solution model of DC power grid with multiple control strategies is built. Based on the analysis of unified solution model of DC power network and AC/DC power flow calculation method, and on the basis of the steady-state model of flexible interconnected distribution network including SOP, a flexible Internet power flow calculation based on alternating iteration method is proposed. Through the analysis and comparison of the algorithm and the model in the literature, the validity and correctness of the model and the algorithm are verified, which lays the foundation for the subsequent research.