Abstract: In view of the full stop of 110 kV and 35 kV substations in the main network and how to quicklyrea lize the full stop and full transfer of load, this paper puts forward the concept of intelligent linkage of the main distribution network, designs the intelligent linkage device of the main distribution network, and develops the intelligent linkage dispatching application module of the main distribution network, which combines the protection of the substation with the control strategy of the automatic distribution main station. When the main network substation is fully stopped, The intelligent linkage device of the main distribution network automatica lly determines whether the 10 kV bus is faulty and uploads it to the intelligent linkage dispatching application module of the main distribution network. After analysis and judgment, the master station starts the reverse transmission or full stop and full rotation mode of the distribution network line, and restores the power supply at the second level, so as to realize the rapid cure of the main distribution network in case of power grid failure.