Ship shore power automatic conversion device

Abstract

The invention discloses a ship shore power automatic conversion device comprising a first circuit breaker Q1, a second circuit breaker Q2, a shore power cutoff switch 1Q, a phase sequence automatic converter, a first closing button 1SB, a second closing button 2SB and an opening button 3SB. When power is provided for inlet wire sides of the circuit breaker Q1 and the circuit breaker Q2, of which wiring phase sequences are different, no matter the phase sequence automatic converter chooses to close the Q1 or Q2, the shore power cutoff switch 1Q on a main power distributing board can be made to automatically close and supply electric power for a main busbar. In a shore connection box interlock is realized between the Q1 and the Q2 and between a main circuit breaker DG1 to DGn including an emergency generator main breaker EQ and the shore power cutoff switch 1Q so as to prevent accidental closing. According to the invention, the ship main power distributing board can be instantaneously converted to be in a mode of being supplied with shore power, thereby facilitating continuous working of ship electrical equipment and ensuring reliable and timely power supply for the ship electrical equipment.

Description

Technical field [0001] The invention relates to a ship shore power supply system, in particular to a ship shore power automatic conversion device, belonging to the technical field of ship electrical equipment. Background technique [0002] When a ship is at a halt in a port or wharf, switching to shore power supply can reduce environmental pollution caused by the ship. [0003] The installation position of the shore power box in the prior art is above the main deck of the ship, and the installation position of the main switchboard is inside the engine room of the ship. The distance between the shore power box on the ship and the main switchboard can be as little as tens of meters to hundreds of meters. Meters, the larger the ship, the longer the distance between the shore power box and the main switchboard, the existing shore power and ship power switching technology, the operation is very inconvenient. When a conventional shore power box is used to supply power to the main switch...

AI Technical Summary

Problems solved by technology

[0003] The installation position of the shore power box in the prior art is above the main deck of the ship, and the installation position of the main switchboard is inside the engine room of the ship. The distance between the shore power box and the main switchboard on the ship ranges from tens of meters to hundreds of meters. meters, the larger the ship, the farther the distance between the shore power box and the main switchboard is, and the existing shore power and ship power switching technology is very inconvenient to operate

When the conventional shore power box is used to supply power to the main switchboard, it is not only inconvenient to operate, but also takes a long time to convert ship power to shore power, which often affects the normal operation of ship electrical equipment

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