Method and Device for On-Grid and Off-Grid Dispatch, and Energy Storage Air-Conditioning System

A method and a device for on-grid and off-grid dispatch, and an energy storage air-conditioning system are provided. The method for on-grid and off-grid dispatch includes: causing a load to be off-grid and causing an energy storage converter to supply power to the load after determining that grid is down; determining a given power and a given voltage according to a voltage and a current of the load obtained for the last time before the grid is down; and obtaining an actual voltage and an actual current outputted by the energy storage converter; and adjusting an output parameter of the energy storage converter according to the given power and the given voltage, as well as the actual voltage and the actual current outputted by the energy storage converter. It is possible to realize seamless shifting from an on-grid state to an off-grid state, thereby avoiding electric energy quality fluctuation during the shifting process and improving the stability.