Switching method and switching device for power supply in source-network-load-storage integrated industrial park

The invention provides a switching method and a switching device for a power supply in a source-grid-load-storage integrated industrial park. The switching method comprises the following steps: establishing a transient simulation model of a power grid of the source-grid-load-storage integrated industrial park; simulating accident tripping of the production load of the industrial park under different working conditions in the simulation model to obtain a multi-stage bus phase angle difference characteristic curve and a multi-stage bus frequency difference characteristic curve; when an incoming line power supply of any one of the plurality of buses loses power, determining a target power supply switching device used for switching a change-over switch corresponding to the bus in the simulation model based on a multi-stage bus rapid switching logic; and determining a target accident switching mode used by the target power supply switching device from preset accident switching modes according to the power supply r