To fully coordinate resources in transmission and distribution networks and ensure the feasibility of restoration plans

a distributed alternating optimization strategy for power supply restoration

embedded with feasible cut constraints

is proposed. First

a coordinated power supply restoration framework for transmission and distribution networks is constructed for fault scenarios in main substations. Second

aiming to minimize customer outage losses and system power supply costs

independent power supply restoration models for the transmission network and each distribution network are established

along with boundary coupling constraints between the networks. Furthermore

based on the concept of distributed alternating optimization and by incorporating cutting plane constraints for the boundary transfer power

a distributed collaborative power supply restoration algorithm for transmission and distribution networks is proposed. Finally

the effectiveness and accuracy of the proposed strategy are verified through simulation examples. The results indicate that this strategy can coordinate resources on both sides of the transmission and distribution networks

generate reliable power supply restoration plans for typical fault scenarios in main substations

and its restoration effectiveness is comparable to that of centralized optimization methods.