Method and system for collecting storage medium for offshore power generation energy

Abstract

In a method for transferring a storage medium of power generation energy loaded by a power generation float to a collection base, a power generation float is connected to both sides of a deck part, a power generation float is moved to a collection base, a deck part straddles a long bank projecting on a water surface along a water channel through which a hull can pass along a quay wall of a collection base, a power generation float is anchored in a state where one of the hulls enters a water channel, a hull on at least one side of the deck part is separated from the deck part, and a storage medium capable of storing energy is connected on a side where the hull of the deck part is separated, and the float leaves with the hulls connected to both sides of the deck part.

What is claimed is: 
     
         1 . A method for transferring, to a collection base, a storage medium that stores energy generated by a power generation float in a floating offshore wind power generation system and is loaded on the power generation float, the power generation float having a twin-hull structure in which two parallel hulls are connected on both sides of a deck part, the storage medium being loaded on one of the hulls, the method comprising:
 a first process of moving the power generation float to the collection base;   a second process of mooring the power generation float in a state in which the deck part of the power generation float straddles a long bank protruding from a water surface while a water channel through which the hull of the power generation float is passable is located between the long bank and a quay wall of the collection base, and one of the hulls of the power generation float enters the water channel;   a third process of detaching, from the deck part of the power generation float, the hull on at least one side of the deck part;   a fourth process of advancing the deck part on the long bank;   a fifth process of connecting another hull loaded with a storage medium having capacity to store energy to the side of the deck part from which the hull has been detached; and   a sixth process of causing the power generation float to leave in a state in which the hulls are connected to both the sides of the deck part.   
     
     
         2 . The method according to  claim 1 , further comprising a seventh process of transferring, to the collection base, the storage medium loaded on the hull detached from the deck part in the third process. 
     
     
         3 . The method according to  claim 1 , wherein:
 in the third process, only the hull on one side of the power generation float is detached from the deck part; and   in the fourth process, the deck part is advanced on the long bank by advancing the other hull connected to the deck part.   
     
     
         4 . The method according to  claim 1 , wherein:
 in the third process, the hulls on both sides of the power generation float are detached from the deck part; and   in the fourth process, only the deck part is advanced on the long bank.   
     
     
         5 . A system configured to transfer, to a collection base, a storage medium that stores energy generated by a power generation float in a floating offshore wind power generation system and is loaded on the power generation float,
 the power generation float having a twin-hull structure in which two parallel hulls are detachably connected on both sides of a deck part,   the storage medium being loaded on one of the hulls,   the collection base including a long bank protruding from a water surface while a water channel through which the hull of the power generation float is passable is located between the long bank and a quay wall of the collection base, the deck part of the power generation float being configured to advance while straddling the long bank,   the system comprising:
 means for detaching, from the deck part of the power generation float, the hull on at least one side of the deck part when the power generation float is moored in a state in which the deck part straddles the long bank and one of the hulls of the power generation float enters the water channel; 
 means for advancing, on the long bank, the deck part from which the hull on the at least one side has been detached; and 
 means for connecting another hull loaded with a storage medium having capacity to store energy to the side of the deck part from which the hull has been detached, wherein 
   the power generation float having the other hull connected to the deck part is configured to leave the collection base.