Method of supplying electric power from shore to ship and system thereof

A method of supplying electric power from shore to a ship with at least one generator, the ship being berthed in port, comprising:

• a first step of synchronizing the electric power from shore with electric power from the generator,
• a second step of carrying out temporary parallel operation of the electric power from shore and the electric power from the generator after the synchronizing of the first step, and
• a third step of shutting off the electric power from the generator to supply the electric power from shore to the ship after the temporary parallel operation of the second step,
• wherein the ship is provided with cargo-handling equipment requiring a large capacity of electric power and being usually supplied with the electric power from the generator, and a line of the electric power from shore is divided into a second line and a first line, the second line being used to supply the electric power from shore to the cargo-handling equipment, the first line being used to supply the electric power from shore to ordinary load other than the cargo-handling equipment, the method further comprising:
• a first process of supplying the electric power from shore to the cargo-handling equipment by connecting the second line to the cargo-handling equipment after shutting off the electric power from the generator to the cargo-handling equipment, and
• a second process of supplying the electric power from shore to the ordinary load via the first line by carrying out the first step to the third step.