Control method for safe shutdown of island operation of park microgrid

The invention discloses a control method for safe shutdown of island operation of a park microgrid. The method comprises the steps: sequentially cutting off a load system, a photovoltaic system and anenergy storage system in a microgrid shutdown process; when the load system is cut off, firstly cutting off a secondary load in the load system, and then cutting off a primary load; when the photovoltaic system is cut off, sending an output reduction instruction to a photovoltaic inverter, reducing photovoltaic output power, and after the output power is gradually reduced to 0, making the photovoltaic inverter be normally shut down; and when the PCS energy storage system is cut off, firstly cutting off the PCS energy storage system in a PQ mode, then cutting off the PCS energy storage systemin a VF mode, sending the output reduction instruction to the PCS energy storage system, and after the output power of the PCS energy storage system is gradually reduced to 0, making the PCS energy storage system be normally s