Collaborative Optimization of Transmission and Distribution Networks Based on Feasible Domain Projections

In view of the problems such as boundary power imbalance and inadequate resource utilization that may arise from traditional transmission and distribution separate scheduling, a cooperative scheduling strategy for transmission and distribution two-level grids is proposed to optimize the system from a global perspective. Firstly, the Frank-Copula function is used to deal with the uncertainty and correlation of the scenery, and then a distribution network model based on the feasible domain projection is established. Finally, with the lowest overall power supply cost of the transmission and distribution system as the objective function, a transmission and distribution two-level network collaborative optimal dispatch model is established. The model equates each distribution network as a transmission network node, with the transmission network and each distribution network completing the optimization design at the same level, effectively avoiding frequent information interaction between the transmission and distribution networks during the optimization process. Finally, simulation examples are used to verify the feasibility of the proposed scheduling strategy.