Double-frequency power supply device for ship shore power system

A technology of a power supply device and an electrical system, applied in the field of electric power, can solve the problems of not being able to provide 50Hz and 60Hz power at the same time, and not being able to supply power to multiple ships, and achieve the effects of improving power supply efficiency, high power supply efficiency, and reducing power loss.

Inactive Publication Date: 2012-01-25
GUODIAN NANJING AUTOMATION
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Problems solved by technology

[0005] The problem that the present invention aims to solve is: the current ship shore power technology can

Method used

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  • Double-frequency power supply device for ship shore power system
  • Double-frequency power supply device for ship shore power system

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Example Embodiment

[0014] The invention provides a dual-frequency power supply device for a ship's shore power system, which can provide both 50Hz power and 60Hz power. Two different types of power sources can supply power to multiple ships at the same time. The system scheme is as follows: figure 1 Shown.

[0015] Transformer one T1 converts the port substation into the 50Hz power supply needed by the ship and connects it to the 50Hz dedicated bus. After passing through the second transformer T2, the port substation provides a suitable input voltage for the high-voltage variable-frequency power supply. The output frequency of the high-voltage variable-frequency power supply is a voltage of 60Hz, which is connected to a 60Hz dedicated bus. The high-voltage variable frequency power supply can be selected according to the port demand with a suitable capacity, or it can be connected in parallel for capacity expansion.

[0016] In actual situations, a suitable high-voltage variable frequency power supp...

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Abstract

The invention discloses a double-frequency power supply device for a ship shore power system. The double-frequency power supply device is characterized by comprising a transformer I and a transformer II, wherein the transformer I is directly connected with a 50Hz power supply of a port power grid; the output end of the transformer I is connected to a 50Hz bus; the transformer II is directly connected with the 50Hz power supply of the port power grid; the output end of the transformer II is connected with a high-voltage frequency conversion power supply; the output end of the high-voltage frequency conversion power supply is connected with a 60Hz bus; and an output of a conversion switch for conversion between the 50Hz bus and the 60Hz bus passes through an isolation transformer and is connected with a high-voltage power connection box. The double-frequency power supply device simultaneously supplies 50Hz power and 60Hz power; and when a plurality of berths are needed to be powered, different voltages can be supplied.

Description

technical field [0001] The invention belongs to the technical field of electric power, relates to ship shore power technology, and relates to a dual-frequency power supply device for a ship shore power system. Background technique [0002] Large ships, especially oil tankers and container ships, usually use fuel oil products (mostly heavy oil and diesel) to generate electricity when they are in port to meet the ship's electricity demand. The combustion of heavy oil and diesel produces a large amount of sulfur compounds and nitrogen oxides, causing pollution to the surrounding environment. The noise generated by ships using diesel generator sets will also pollute the environment. At present, some advanced ports in the world have already used land power to supply power to docked ships. This power supply system is called the docked ship power supply system (hereinafter referred to as the shore power system). [0003] Global oil resources are depleting day by day, oil prices h...

Claims

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Application Information

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IPC IPC(8): H02M5/10
Inventor 王文强徐大可曹胜华赖晓路
Owner GUODIAN NANJING AUTOMATION
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