Passenger ship high-voltage shore power system

Abstract

The utility model relates to a high-voltage shore power system for a passenger ship, which comprises shore-end power supply equipment and ship-end access equipment, and the shore-end power supply equipment comprises a shore-end high-voltage power distribution cabinet and a shore-end cable winch. The ship end access equipment comprises a port shore power socket box, a starboard shore power socket box, a ship end high-voltage power distribution cabinet, a high-voltage transformer, a first frequency converter, a second frequency converter, a first main power distribution board and a second main power distribution board; according to the system, the equipment layout of a shore end and a ship end is changed, a cable winch is replaced from the ship end to the shore end, socket boxes are arranged on a left ship board and a right ship board respectively, the loading weight of a ship is reduced, occupation of a shore power system on the space of the ship end is optimized, a previously designed multifunctional ship frequency converter is utilized, additional arrangement of a frequency converter special for a high-voltage shore power system is avoided, and the cost is reduced. Two frequency converters and a main distribution board on large ships such as a luxury cruise ship and a high-end ro-ro passenger ship are connected to a shore power system, the additional arrangement cost is reduced, the system redundancy is improved, the average load is achieved, and the stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of ship-shore power system, and particularly relates to a high-voltage shore power system for passenger ships. BACKGROUND

[0002] With the continuous development of world shipping trade, the number of ships docking at ports of various countries has increased substantially. During the period when the ships are at the port, in order to ensure the normal operation of the living facilities and working machinery on the ships, the ship generators need to work for a long time, which not only consumes a large amount of energy, but also causes air and noise pollution in the port area. In order to reduce pollution and protect the environment, shore power is gradually used to replace the on-board generators for large ships such as luxury cruise ships and high-end passenger-rolling ships during the period when the ships are at the port. When the side load of the ship is large, high-voltage shore power is used, and the voltage is generally 6 kV or 6.6 kV.

[0003] The high-voltage shore power system for ships generally consists of a shore-end power distribution cabinet, a cable winch (including a cable management system), a shore power socket box, a shore power control cabinet, a high-voltage transformer, a frequency converter cabinet, and a ship main power distribution board. Previously, the high-voltage shore power system generally adopted a ship-based fixed type, and the shore power cable winch was mainly arranged at the stern deck of the ship. The corresponding shore power socket was transported to the shore end from the ship end, and was connected to the shore-end power distribution cabinet for power supply. This method results in that the cable winch at the ship end occupies a large amount of use space and loading weight of the ship, and can only be limited to the side where the cable winch is installed for shore power connection. In addition, the conventional shore power system only connects one ship main power distribution board, and a large-capacity protection circuit breaker needs to be designed. Once the protection circuit breaker is damaged or needs to be repaired, the normal power supply cannot be ensured. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a high-voltage shore power system for passenger ships, which can optimize the space of the ship, match the shore-end equipment, fully utilize the frequency conversion equipment, and increase the redundancy of the system.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] A high-voltage shore power system for passenger ships, comprising shore-end power supply equipment and ship-end access equipment, wherein the shore-end power supply equipment comprises a shore-end high-voltage power distribution cabinet and a shore-end cable winch, the ship-end access equipment comprises a port-side shore power socket box, a starboard shore power socket box, a ship-end high-voltage power distribution cabinet, a high-voltage transformer, a first frequency converter, a second frequency converter, a first main power distribution board, and a second main power distribution board, and the high-voltage transformer is a double-output transformer; the cable is connected to the port-side shore power socket box or the starboard shore power socket box, the output ends of the port-side shore power socket box and the starboard shore power socket box are respectively connected to the ship-end high-voltage power distribution cabinet, the output end of the ship-end high-voltage power distribution cabinet is connected to the high-voltage transformer, the output end of the high-voltage transformer is respectively connected to the first frequency converter and the second frequency converter, the first frequency converter is connected to the first main power distribution board, and the second frequency converter is connected to the second main power distribution board.

[0007] Further, the first frequency converter and the second frequency converter comprise a high-voltage shore power circuit breaker and a frequency conversion control box for controlling the closing and opening of the power supply circuit.

[0008] Further, the first frequency converter and the second frequency converter comprise a filter unit.

[0009] Further, a sine filter is arranged between the first frequency converter, the second frequency converter and the high-voltage transformer.

[0010] Further, a circuit breaker is arranged between the high-voltage transformer and the first frequency converter and the second frequency converter for safely opening the circuit during maintenance or failure.

[0011] Further, the ship-end high-voltage power distribution cabinet further comprises a protection circuit component and a PLC control module.

[0012] Further, the protection circuit component comprises a circuit breaker and a fuse.

[0013] Further, the frequency converter further comprises a rectifier unit, an inverter unit and a filter unit.

[0014] Through the above technical solution, the space arrangement and loading weight of the shore power system are optimized, the ship is facilitated to dock the port flexibly, the functions of the double sets of main power distribution boards and the combined frequency converter of the large ship such as the luxury cruise ship and the high-end passenger-rolling ship are fully utilized, the frequency conversion equipment is comprehensively utilized, and the system redundancy is increased. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a passenger ship high-voltage shore power system schematic diagram provided by the utility model.

[0016] Figure 2 is a passenger ship high-voltage shore power system schematic diagram connected with the port side socket box.

[0017] Figure 3 is a passenger ship high-voltage shore power system schematic diagram connected with the starboard socket box.

[0018] In the drawing: 100 is a shore-end high-voltage power distribution cabinet, 120 is a shore-end cable winch, 130 is a port side shore power socket box, 140 is a starboard shore power socket box, 150 is a ship-end high-voltage power distribution cabinet, 160 is a high-voltage transformer, 170 is a first frequency converter, 180 is a second frequency converter, 190 is a first main power distribution board, and 200 is a second main power distribution board. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and specific embodiments.

[0020] For example, Figure 1As shown, a passenger ship high-voltage shore power system has a shore end device shore end high-voltage distribution cabinet (100), a shore end cable winch (120), a ship end device: left shore power socket box (130), right shore power socket box (140), ship end high-voltage distribution cabinet (150), high-voltage transformer (160), first frequency converter (170), second frequency converter (180), first main distribution board (190) and second main distribution board (200) are composed; the ship end high-voltage distribution cabinet (150) includes circuit protection components such as circuit breaker, fuse and PLC control module.

[0021] The frequency converter is preferably a multifunctional marine frequency converter designed by the inventor in the early stage, and the related patent number is "CN217427675U". This kind of frequency converter includes high-voltage shore power circuit breaker, filter unit, rectifier unit and inverter unit, etc., which can meet the power distribution use under different working conditions, and can convert shore power AC440V 50HZ power into AC440V 60Hz stable power, saving the separate arrangement of frequency converter for high-voltage shore power system.

[0022] When the normal shore power is connected, the shore end high-voltage distribution cabinet (100) connects the shore power socket to the shore power socket box through the shore end cable winch (120), and the socket box meets the requirements of IEC 80005-1, IEC62613-1 and IEC62613-2; the ship is provided with left shore power socket box (130) and right shore power socket box (140), and the capacity of the two shore power socket boxes is consistent with the system capacity. When the ship is berthed in the port, only one side is used, which enhances the flexibility of the ship berthing. When one side of the shore power socket box is connected normally, the shore power is transmitted to the high-voltage transformer (160) through the ship end high-voltage distribution cabinet (150). Because there is a shore power frequency of 50Hz and a ship power frequency of 60Hz, frequency conversion and voltage stabilization can be realized by using the frequency converter. In this way, the high-voltage shore power is connected to the first frequency converter (170) and the second frequency converter (180) through the secondary side of the high-voltage transformer (160). It should be noted that the secondary side of the high-voltage transformer is a dual output, which evenly distributes the required power of the shore power to the two combined frequency converters. The first frequency converter (170) is connected to the first main distribution board (190), and the second frequency converter (180) is connected to the second main distribution board (200). The main distribution board is used to supply power to the daily load of the whole ship, and the general power supply is AC440V or 400V, which belongs to low-voltage distribution board. The shore end high-voltage shore power system ultimately provides energy for the ship load through the first main distribution board (190) and the second main distribution board (200).

[0023] As Figure 2As shown in the figure, the shore end high voltage distribution cabinet (100), the shore end cable winch (120), the left side shore power socket box (130), the ship end high voltage distribution cabinet (150), the high voltage transformer (160), the first frequency converter (170) and the second frequency converter (180), the first main distribution board (190) and the second main distribution board (200) are sequentially connected, which is the normal power supply mode one of the shore power system.

[0024] As shown in the figure, Figure 3 As shown in the figure, the shore end high voltage distribution cabinet (100), the shore end cable winch (120), the right side shore power socket box (140), the ship end high voltage distribution cabinet (150), the high voltage transformer (160), the first frequency converter (170) and the second frequency converter (180), the first main distribution board (190) and the second main distribution board (200) are sequentially connected, which is the normal power supply mode two of the shore power system.

[0025] In the system, there are the first frequency converter (170) and the second frequency converter (180), the first main distribution board (190) and the second main distribution board (200), in the shore power supply mode, the single point failure of any one device can also disconnect a power supply line through the power management system of the high voltage shore power system, the power management system is arranged in the main distribution board, used for controlling the power load power supply distribution of the whole ship, including the corresponding functions of power supply, heavy load inquiry, power distribution, power loss protection, sequential start, etc. Through the design of double sets of main distribution boards and frequency converters, the daily load power of the ship is reduced, the power supply to the necessary equipment is maintained, so that the system redundancy is improved.

[0026] Those skilled in the art should understand that the above description is only a specific embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A passenger ship high voltage shore power system comprising a shore end power supply and a ship end access device, characterized in that, The shore power supply device comprises a shore high-voltage distribution cabinet and a shore cable winch, and the ship end access device comprises a left side shore power socket box, a right side shore power socket box, a ship end high-voltage distribution cabinet, a high-voltage transformer, a first frequency converter, a second frequency converter, a first main distribution board and a second main distribution board, wherein the high-voltage transformer is a double-output transformer; The cable is connected to the left side shore power socket box or the right side shore power socket box, the left side shore power socket box and the right side shore power socket box are respectively connected to the ship end high-voltage distribution cabinet, the ship end high-voltage distribution cabinet is connected to the high-voltage transformer, the high-voltage transformer is respectively connected to the first frequency converter and the second frequency converter, the first frequency converter is connected to the first main distribution board, and the second frequency converter is connected to the second main distribution board.

2. A passenger ship high voltage shore power system according to claim 1, characterized in that, The first frequency converter and the second frequency converter comprise a high-voltage shore power circuit breaker and a frequency conversion control box, which are used for controlling the closing and opening of the shore power supply circuit.

3. A passenger ship high voltage shore power system according to claim 2, characterized in that, The first frequency converter and the second frequency converter comprise a filter unit.

4. The passenger ship high voltage shore power system of claim 1, wherein, A sine filter is arranged between the first frequency converter, the second frequency converter and the high-voltage transformer.

5. The passenger ship high voltage shore power system of claim 1, wherein, A circuit breaker is arranged between the high-voltage transformer and the first frequency converter and the second frequency converter, which is used for safely opening the circuit when maintenance or fault occurs.

6. The passenger ship high voltage shore power system of claim 1, wherein, The ship end high-voltage distribution cabinet further comprises a protection circuit component and a PLC control module.

7. A passenger ship high voltage shore power system according to claim 6, characterized in that, The protection circuit component comprises a circuit breaker and a fuse.

8. The passenger ship high voltage shore power system of claim 1, wherein, The frequency converter further comprises a rectifier unit, an inverter unit and a filter unit.

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