Patent ID: 7253538
Filing Date: 2007-08-07
Classification: B63J,H02J

Abstract:
1. 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.