To solve the problems such as poor matching of ship-shore grid connection parameters and low convenience of ship-shore connection,we study the operation mode of the shore power system and the connection method of the shore power socket box.Through on-site surveys,literature reviews,and research on foreign standards,we obtain information on the setting range of auxiliary engine power of large container ships,the distance of shore power interface from the stern of the ship,the length of shore power cable,and the control strategy for parallel operation of shore power inverter devices.Finally,we improve the reliability of shore power supply and increase the shore power connection rate by setting interlock switches between shore power devices,using parallel operation technology to increase capacity,and sharing power among single berth shore power socket boxes.The shore power facility construction scheme has the features of safety,reliability,economic rationality,and easy use.It can take into account the shore power connection of future ultra-large container ships and has certain reference value for the design of similar projects.